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Form 8-K

sec.gov

8-K — Allegiant Travel CO

Accession: 0001362468-26-000047

Filed: 2026-08-04

Period: 2026-08-04

CIK: 0001362468

SIC: 4512 (AIR TRANSPORTATION, SCHEDULED)

Item: Results of Operations and Financial Condition

Item: Regulation FD Disclosure

Item: Financial Statements and Exhibits

Documents

8-K — algt-20260804.htm (Primary)

EX-99.1 (a2026q28-kex991.htm)

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8-K

8-K (Primary)

Filename: algt-20260804.htm · Sequence: 1

algt-20260804

0001362468falseLas VegasNV00013624682026-08-042026-08-04

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington D.C. 20549

_____________________________________________

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): August 4, 2026

Allegiant Travel Company

(Exact name of registrant as specified in its charter)

Nevada 001-33166 20-4745737

(State or other jurisdiction of incorporation) (Commission File Number) (I.R.S. Employer Identification No.)

1201 North Town Center Drive

Las Vegas, NV

89144

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code:              (702) 851-7300

N/A

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol Name of each exchange on which registered

Common stock, par value $0.001

ALGT

NASDAQ Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (Section 17 CFR §230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (Section 17 CFR §240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Section 2    Financial Information

Item 2.02    Results of Operations and Financial Condition.

On August 4, 2026, Allegiant Travel Company (the “Company”) issued the press release attached as Exhibit 99.1 to this Form 8-K concerning our results of operations for the quarter ended June 30, 2026.

This information is being furnished under Item 2.02 of Form 8-K. This report and Exhibit 99.1 are deemed to be furnished and are not considered “filed” with the Securities and Exchange Commission. As such, this information shall not be incorporated by reference into any of our reports or other filings made with the Securities and Exchange Commission.

Non-GAAP Financial Measures: The press release contains non-GAAP financial measures as such term is defined in Regulation G under the rules of the Securities and Exchange Commission. While the Company believes these financial measures are useful in evaluating the Company’s performance, this information should be considered to be supplemental in nature and not as a substitute for or superior to the related financial information prepared in accordance with GAAP. Further, these non-GAAP financial measures may differ from similarly titled measures presented by other companies.

Forward-Looking Statements: Under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, statements in the press release filed as Exhibit 99.1 and statements in the 2Q26 Earnings Call Slides furnished as Exhibit 99.2 that are not historical facts are forward-looking statements. These forward-looking statements are only estimates or predictions based on our management's beliefs and assumptions and on information currently available to our management. Forward-looking statements include our statements regarding future airline operations, revenue, expenses and earnings, available seat mile growth, expected capital expenditures, the cost of fuel, the timing of aircraft acquisitions and retirements, the number of contracted aircraft to be placed in service in the future, our ability to consummate announced aircraft transactions, estimated tax rate, as well as other information concerning future results of operations, business strategies, financing plans, industry environment and potential growth opportunities. Forward-looking statements include all statements that are not historical facts and can be identified by the use of forward-looking terminology such as the words "believe," "expect," “guidance,” "anticipate," "intend," "plan," "estimate", “project”, “hope” or similar expressions.

Forward-looking statements involve risks, uncertainties and assumptions. Actual results may differ materially from those expressed in the forward-looking statements. Important risk factors that could cause our results to differ materially from those expressed in the forward-looking statements generally may be found in our periodic reports filed with the Securities and Exchange Commission at www.sec.gov. These risk factors include, without limitation, regulatory reviews of, and production limits on, Boeing impacting our aircraft delivery schedule; an accident involving, or problems with, our aircraft; public perception of our safety; our reliance on our automated systems; our reliance on Boeing to deliver aircraft under contract to us on a timely basis; risk of breach of security of personal data; volatility of fuel costs; labor issues and costs; the ability to obtain regulatory approvals as needed in connection with our fleet and network; the effect of economic conditions on leisure travel; debt covenants and balances; the impact of government regulations on the airline industry; the ability to finance aircraft to be acquired; the ability to obtain necessary government approvals to offer international service; terrorist attacks; risks inherent to airlines; our competitive environment; our reliance on third parties who provide facilities or services to us; the impact of the possible loss of key personnel; economic and other conditions in markets in which we operate; increases in maintenance costs and availability of outside maintenance contractors to perform needed work on our aircraft on a timely basis and at acceptable rates; cyclical and seasonal fluctuations in our operating results; the perceived acceptability of our environmental, social and governance efforts; the risk that the combined company after the Sun Country acquisition will not realize expected benefits, cost savings, accretion, synergies and/or growth from the Sun Country acquisition or that any of the foregoing may take longer to realize or be more costly to achieve than expected; the diversion of management's attention and time from ongoing business operations and opportunities to integration matters; the risk that the integration of Sun Country's operations will be materially delayed or will be more costly or difficult than expected or that Allegiant is otherwise unable to successfully integrate Sun Country's businesses into its businesses; and reputational risk and potential adverse reactions of Allegiant's or Sun Country's customers, suppliers, employees, labor unions or other business partners, including those resulting from the completion of the Sun Country acquisition and the integration of the companies.

Any forward-looking statements are based on information available to us today and we undertake no obligation to update publicly any forward-looking statements, whether as a result of future events, new information or otherwise.

Section 7    Regulation FD

Item 7.01    Regulation FD Disclosure.

We are supplementing our press release with updated information for investors relating to our financial performance and outlook as well as other information regarding our business. The update is furnished herewith as Exhibit 99.2 and is incorporated herein by reference.

The information in Section 7 of this Current Report on Form 8-K and Exhibit 99.2 filed herewith is furnished pursuant to Item 7.01 of Form 8-K and shall not be deemed to be “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that Section. As such, this information shall not be incorporated by reference into any of the Company’s reports or other filings made with the Securities and Exchange Commission.

Section 9    Financial Statements and Exhibits

Item 9.01    Financial Statements and Exhibits.

a.Not applicable.

b.Not applicable.

c.Not applicable.

d.Exhibits

Exhibit No. Description of Document

99.1

Press Release issued by Allegiant Travel Company on August 4, 2026

99.2

2Q26 Earnings Call Slides

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, Allegiant Travel Company has duly caused this Report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: August 4, 2026 ALLEGIANT TRAVEL COMPANY

By: /s/ Robert J. Neal

Name: Robert J. Neal

Title: President and Chief Financial Officer

EXHIBIT INDEX

Exhibit No. Description of Document

99.1

Press Release issued by Allegiant Travel Company on August 4, 2026

99.2

2Q26 Earnings Call Slides

EX-99.1

EX-99.1

Filename: a2026q28-kex991.htm · Sequence: 2

Document

Exhibit 99.1

ALLEGIANT TRAVEL COMPANY

SECOND QUARTER 2026 FINANCIAL RESULTS*

Second quarter 2026 GAAP loss per share of $(0.21)(1)

Second quarter 2026 adjusted diluted earnings per share of $2.19(2)(3)(4), up 78.0 percent year-over-year

* Second quarter results include the financial performance of Sun Country only from and after the date the acquisition closed on May 13, 2026

LAS VEGAS. August 4, 2026 — Allegiant Travel Company (NASDAQ: ALGT) today reported the below financial results for second quarter 2026, as well as comparisons to the prior year.

"Our record quarterly revenue and strong second-quarter operating margin, achieved despite materially higher fuel costs, demonstrate the strength and resiliency of Allegiant’s business model," stated Greg Anderson, chief executive officer of Allegiant Travel Company. "Despite a 6.8 percent capacity reduction, standalone Allegiant increased unit revenue 24.6 percent year over year and expanded adjusted operating margin 0.4 percentage points to 9.0 percent, keeping us on track to rank among the industry leaders in full-year operating margin.

"For the combined company, adjusted earnings per share of $2.19 were well above our guidance range. The upside was supported by strong operating results and approximately seven weeks of Sun Country earnings following our mid-May close. We are pleased with the pace of integration and are confident that we will achieve a minimum of $140 million in annual run-rate synergies within three years of close.

"Commercially, we are expanding customer choice through Allegiant First, which will debut on select aircraft next year; our new distribution agreement with Expedia, which is bringing in new customers to Allegiant; and our award-winning cobrand credit card, for which bank remuneration increased 23.6 percent year over year.

"Looking to the second half of 2026, leisure demand remains strong, and we expect the combined company’s third-quarter unit revenue growth to be approximately in line with the 24.6 percent increase achieved by standalone Allegiant in the second quarter. Given fuel volatility, we will continue to trim off-peak flying while preserving the peak-period schedule. For the full year we are introducing combined-company adjusted earnings per share guidance of more than $6.00, reflecting the addition of Sun Country and current fuel prices.

"In closing, none of this happens without our team members, and I want to express my gratitude to Team Allegiant and Team Sun Country. We have never been better positioned, and I'm excited to build on this momentum in the quarters ahead as the leading leisure airline in the United States."

1

Summary Results

Consolidated(6)

Three Months Ended June 30, Percent Change

(unaudited) (in millions, except per share amounts) 2026 2025 YoY

Total operating revenue $ 943.5  $ 689.4  36.9  %

Total operating expense 922.4  756.9  21.9  %

Operating income (loss) 21.1  (67.5) 131.3  %

Loss before income taxes (5.2) (88.6) 94.1  %

Net loss (4.9) (65.2) 92.5  %

Diluted loss per share (0.21) (3.62) NM

Sunseeker special charges, net(3)

—  103.3  NM

Airline special charges(3)

66.0  14.6  NM

Adjusted income before income taxes(2)(3)(4)

64.5  29.4  119.4  %

Adjusted net income(2)(3)(4)

51.1  22.7  125.1  %

Adjusted diluted earnings per share(2)(3)(4)

2.19  1.23  78.0  %

Allegiant Air(7)

Three Months Ended June 30,

Percent Change(5)

(unaudited) (in millions, except per share amounts) 2026 2025 YoY

Allegiant Air operating revenue

$ 776.2  $ 668.8  16.1  %

Allegiant Air operating expense

746.1  625.6  19.3  %

Allegiant Air operating income

30.1  43.2  (30.3) %

Allegiant Air income before income taxes

7.8  29.7  (73.7) %

Allegiant Air special charges(3)

39.5  14.6  NM

Adjusted Allegiant Air operating margin(2)(3)

9.0  % 8.6  % 0.4

Consolidated(6)

Six Months Ended June 30, Percent Change

(unaudited) (in millions, except per share amounts) 2026 2025 YoY

Total operating revenue $ 1,675.9  $ 1,388.5  20.7  %

Total operating expense 1,573.7  1,390.9  13.1  %

Operating income (loss) 102.2  (2.5) NM

Income (loss) before income taxes 60.8  (46.6) NM

Net income (loss) 37.6  (33.1) NM

Diluted earnings (loss) per share 1.80  (1.84) NM

Sunseeker special charges, net(3)

—  100.4  NM

Airline special charges(3)

93.7  16.0  NM

Adjusted income before income taxes(2)(3)(4)

158.3  73.2  116.3  %

Adjusted net income(2)(3)(4)

120.7  56.2  114.8  %

Adjusted diluted earnings per share(2)(3)(4)

5.77  3.03  90.4  %

Allegiant Air(7)

Six Months Ended June 30,

Percent Change(5)

(unaudited) (in millions, except per share amounts) 2026 2025 YoY

Allegiant Air operating revenue $ 1,508.6  $ 1,337.1  12.8  %

Allegiant Air operating expense 1,397.4  1,233.1  13.3  %

Allegiant Air operating income 111.2  104.0  6.9  %

Allegiant Air income before income taxes 73.9  79.3  (6.8) %

Allegiant Air special charges(3)

67.3  16.0  NM

Adjusted Allegiant Air operating margin(2)(3)

11.8  % 9.0  % 2.8

2

(1)Second quarter 2026 GAAP loss per share includes one-time transaction and integration costs related to the Sun Country transaction.

(2)Denotes a non-GAAP financial measure. Refer to the Non-GAAP Presentation section within this document for further information and for calculation of per share figures.

(3)In 2026 and 2025, we recognized certain expenses as special charges related to both: (1) Airline activities including accelerated depreciation on airframes identified for early retirement, accelerated amortization of software identified for redevelopment, costs related to the Sun Country Airlines acquisition, organizational restructuring, and a credit loss on a note receivable, and (2) Sunseeker Resort including costs related to the sale of the resort and weather-related damages (net of recoveries). For a listing of these charges, see the special charges table in Appendix A of this earnings release. The adjusted numbers in this earnings release exclude the effect of these special charges.

(4)In 2026 and 2025, the Company incurred losses on debt extinguishment related to prepayment of debt facilities. These are added back, where appropriate, in our adjusted results.

(5)Except adjusted Allegiant Air-only operating margin, which is percentage point change.

(6)Comparability of consolidated figures to prior year performance is significantly impacted by the acquisition of Sun Country as of May 13, 2026, and by the sale of Sunseeker Resort in September 2025, as a result of which there were no operating revenues or operating expenses related to the Sunseeker segment after the sale.

(7)In this table, Allegiant Air figures are presented excluding Sun Country results for comparability to the prior year.

NM    Not meaningful

*    Note that amounts may not recalculate due to rounding

3

Second Quarter 2026 Results and Highlights

•Second quarter consolidated results include Sun Country operations from and after the May 13, 2026 closing date of the transaction

•Consolidated total operating revenue(3) of $943.5M

•Record Allegiant standalone revenue of $776.2M, up 16.1 percent year over year on 6.8 percent less capacity

•Allegiant standalone quarterly TRASM record of 14.42 ¢, up 24.6 percent year over year

•Consolidated third party products revenue of $45.8M

◦Allegiant standalone third party products revenue of $44.5M, up 32.2 percent year over year driven by cobrand strength

•Adjusted operating income(1)(2)(3) of $87.1M, yielding an adjusted operating margin of 9.2 percent

•Adjusted Allegiant-only operating income of $69.6M, yielding an adjusted operating margin of 9.0 percent, a 0.4-point improvement over the prior year, despite a 73 percent increase in fuel cost per gallon

•Adjusted income before income tax(1)(2)(3)(4) of $64.5M, yielding an adjusted pre-tax margin of 6.8 percent

•Adjusted Allegiant-only income before income tax(1)(2)(3)(4) of $51.1M, yielding an adjusted pre-tax margin of 6.6 percent

•Adjusted EBITDA(1)(2)(3)(4) of $157.7M, yielding an adjusted EBITDA margin of 16.7 percent

•Adjusted Allegiant-only EBITDA(1)(2)(3)(4) of $128.0M, yielding an adjusted EBITDA margin of 16.5 percent

•Adjusted operating CASM, excluding fuel, special charges, and cargo expenses(2)(3) of 8.19 ¢

•Adjusted Allegiant-only operating CASM, excluding fuel(2)(3) of 8.17 ¢, up 6.4 percent year over year on 6.8 percent less capacity

•Available seat miles per gallon of fuel of 86.2

•Allegiant Air available seat miles per gallon of fuel of 85.4, up 0.8 percent year over year

•$41.2M in total Allegiant Air cobrand credit card remuneration received, up 23.6 percent year over year

•In July, entered a 12-month exclusive distribution agreement with Expedia Group, Allegiant's first-ever authorized online travel agency ("OTA") partner, bringing the Company's nonstop network to all of Expedia Group's U.S. brands and expanding reach to new leisure customers

•In July, announced enhancements to the onboard experience, including complimentary inflight beverage service on all Allegiant flights beginning August 1, 2026, and Allegiant First, a new premium seating tier debuting on select aircraft in spring 2027, with seats anticipated to go on sale mid-August

•On July 31, a new collective bargaining agreement with the International Brotherhood of Teamsters representing the Allegiant pilots was ratified with nearly 80 percent of votes in favor

4

Balance Sheet, Cash and Liquidity

•Consolidated total available liquidity at June 30, 2026 was $1.3B, which included $1.1B in cash and investments and $250.0M in undrawn revolving credit facilities

•$46.0M in consolidated cash from operations during second quarter 2026

•Consolidated total debt at June 30, 2026 was $2.8B

•Includes $546.8M of debt and finance lease obligations attributable to Sun Country

•Reflects the issuance of $650.0M of new 7.125% Senior Secured Notes due 2031, with a portion of proceeds used to early tender for and repurchase of $377.5M of our 7.250% Senior Secured Notes due 2027

•Net debt at June 30, 2026 was $1.7B

•Consolidated debt principal payments of $445.0M during the quarter, which included $422.3M for Allegiant and $22.7M for Sun Country

•Includes $377.5M related to the early tender for and repurchase of more than 90% of Allegiant's 7.250% Senior Secured Notes due 2027

•Consolidated air traffic liability at June 30, 2026 was $570.6M, which included $436.8M for Allegiant and $133.9M for Sun Country

Capital Expenditures

•Second quarter Allegiant Air capital expenditures of $183.2M, which included $155.6M for aircraft-related capital expenditures and $27.6M in other capital expenditures

•Second quarter Allegiant Air deferred heavy maintenance expenditures were $15.9M

(1)Denotes a non-GAAP financial measure. Refer to the Non-GAAP Presentation section within this document for further information and for calculation of per share figures.

(2)In 2026 and 2025, we recognized certain expenses as special charges related to both: (1) Airline activities including accelerated depreciation on airframes identified for early retirement, accelerated amortization of software identified for redevelopment, costs related to the Sun Country Airlines acquisition, organizational restructuring, and a credit loss on a note receivable, and (2) Sunseeker Resort including costs related to the sale of the resort and weather-related damages (net of recoveries). For a listing of these charges, see the special charges table in Appendix A of this earnings release. The adjusted numbers in this earnings release exclude the effect of these special charges.

(3)Prior-year amounts presented above reflect Allegiant Air only results and exclude Sun Country results and also exclude Sunseeker Resort, which was sold in 2025. Current-period results are compared against these airline-only prior-year figures to improve comparability.

(4)In second quarter 2026, the Company incurred losses on debt extinguishment related to prepayment of debt facilities. These are added back, where appropriate, in our adjusted results.

5

Guidance, subject to revision

Certain forward-looking financial information in the following tables is not presented in accordance with accounting principles generally accepted in the U.S. (“GAAP”). Non-GAAP financial figures may be useful to stakeholders, but should not be considered a substitute for GAAP figures. In reliance on the 'unreasonable efforts' exception in Item 10(e)(1)(i)(B) of SEC Regulation S-K, a reconciliation to the most comparable GAAP financial measure is not provided for adjusted earnings per share and adjusted operating margin in the table below. The Company is not able to reconcile these Non-GAAP financial figures without unreasonable effort because the special charge adjustments will not be known until the end of the indicated future periods and any range of projected values would be too broad to be meaningful. As a result, this information would not be significant to investors.

The below guidance is for the combined Allegiant and Sun Country entity.

Third quarter 2026 guidance

System ASMs - year-over-year change(5)

(~6.5%)

Scheduled service ASMs - year-over-year change(5)

(~5.5%)

Fuel cost per gallon $ 3.80

Adjusted operating margin(1)

1.0% - 3.0%

Interest expense(2) (millions)

~$50

Capitalized interest(2) (millions)

(~$7)

Interest income (millions) ~$12

Weighted average shares outstanding (millions) 27.3

Adjusted earnings per share(1)

($1.00) - ($0.00)

Full-year 2026 guidance

Fuel cost per gallon $ 3.70

Weighted average shares outstanding (millions) 23.9

Adjusted earnings per share(1)

>$6.00

Full-year CAPEX

Aircraft-related capital expenditures(3) (millions)

$640 to $660

Capitalized deferred heavy maintenance (millions) $75 to $85

Other capital expenditures (millions) $115 to $125

Recurring principal payments(4) (millions) (full year)

$205 to $215

(1)    Denotes a non-GAAP financial measure for which no reconciliation to GAAP is provided as described above.

(2)     Includes capitalized interest related to pre-delivery deposits on new aircraft.

(3)     Aircraft-related capital expenditures include the purchase of aircraft, engines, induction costs, and pre-delivery deposits. This amount excludes capitalized interest related to pre-delivery deposits on new aircraft.

(4)     Does not include repayment of pre-delivery deposit debt facilities due on delivery of aircraft

(5)    Year-over-year change is calculated relative to prior-year combined entity pro forma available seat miles (ASMs) for the three months ended September 30, 2025 of 6,710,010 (in thousands) for total system and 6,143,764 (in thousands) for scheduled service

6

Aircraft Fleet Plan by End of Period

Aircraft - (seats per AC) 2Q26 3Q26 YE26

Passenger service

Airbus A320 77  76  73

Airbus A319 28  27  26

Boeing 737 MAX-8 19  21  25

Boeing 737-800 (Sun Country) 44  43  43

Boeing 737-900ER (Sun Country) 3  3  3

Total aircraft in passenger service 171  170  170

Boeing 737-800F (Sun Country - Cargo) 22  22  22

Total 193  192  192

The table above is management's best estimate and is provided based on the Company’s current plans and is subject to change. The numbers include aircraft expected to be in service at the end of each period and exclude both aircraft that we expect to take delivery of but not to be placed in service until a subsequent period as well as aircraft in temporary storage. The numbers exclude three aircraft owned by the Company but on operating lease to other carriers.

7

Allegiant Travel Company will host a conference call with analysts at 4:30 p.m. ET Tuesday, August 4, 2026 to discuss its second quarter 2026 financial results. A live broadcast of the conference call will be available via the Company’s Investor Relations website homepage at http://ir.allegiantair.com. The webcast will also be archived in the “Events & Presentations” section of the website.

Allegiant Travel Company

Las Vegas-based Allegiant (NASDAQ: ALGT) is an integrated travel company with an airline at its heart, focused on connecting customers with the people, places and experiences that matter most. Through Allegiant Air and Sun Country Airlines, the Company serves approximately 22 million annual customers across scheduled passenger, charter and cargo operations. Together, the airlines operate more than 650 routes serving nearly 175 cities throughout the United States and select international destinations. Allegiant is committed to providing affordable travel options, operational excellence and long-term value for customers, employees, communities and shareholders. For more information, visit us at Allegiant.com. Media information, including photos, is available at http://gofly.us/iiFa303wrtF.

Media Inquiries: mediarelations@allegiantair.com

Investor Inquiries: ir@allegiantair.com

Under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, statements in this press release that are not historical facts are forward-looking statements. These forward-looking statements are only estimates or predictions based on our management's beliefs and assumptions and on information currently available to our management. Forward-looking statements include our statements regarding future airline operations, revenue, expenses and earnings, available seat mile growth, expected capital expenditures, the cost of fuel, the timing of aircraft acquisitions and retirements, the number of contracted aircraft to be placed in service in the future, our ability to consummate announced aircraft transactions, estimated tax rate, as well as other information concerning future results of operations, business strategies, financing plans, industry environment and potential growth opportunities. Forward-looking statements include all statements that are not historical facts and can be identified by the use of forward-looking terminology such as the words "believe," "expect," “guidance,” "anticipate," "intend," "plan," "estimate", “project”, “hope” or similar expressions.

Forward-looking statements involve risks, uncertainties and assumptions. Actual results may differ materially from those expressed in the forward-looking statements. Important risk factors that could cause our results to differ materially from those expressed in the forward-looking statements generally may be found in our periodic reports filed with the Securities and Exchange Commission at www.sec.gov. These risk factors include, without limitation, regulatory reviews of, and production limits on, Boeing impacting our aircraft delivery schedule, an accident involving, or problems with, our aircraft, public perception of our safety, our reliance on our automated systems, our reliance on Boeing to deliver aircraft under contract to us on a timely basis, risk of breach of security of personal data, volatility of fuel costs, labor issues and costs, the ability to obtain regulatory approvals as needed in connection with our fleet and network, the effect of economic conditions on leisure travel, debt covenants and balances, the impact of government regulations on the airline industry, the ability to finance aircraft to be acquired, the ability to obtain necessary government approvals to offer international service, terrorist attacks, risks inherent to airlines, our competitive environment, our reliance on third parties who provide facilities or services to us, the impact of the possible loss of key personnel, economic and other conditions in markets in which we operate, increases in maintenance costs and availability of outside maintenance contractors to perform needed work on our aircraft on a timely basis and at acceptable rates, cyclical and seasonal fluctuations in our operating results, the perceived acceptability of our environmental, social and governance efforts, the risk that the combined company after the Sun Country acquisition will not realize expected benefits, cost savings, accretion, synergies and/or growth from the Sun Country acquisition or that any of the foregoing may take longer to realize or be more costly to achieve than expected, the diversion of management's attention and time from ongoing business operations and opportunities to integration matters, the risk that the integration of Sun Country's operations will be materially delayed or will be more costly or difficult than expected or that Allegiant is otherwise unable to successfully integrate Sun Country's businesses into its businesses, and reputational risk and potential adverse reactions of Allegiant's or Sun Country's customers, suppliers, employees, labor unions or other business partners, including those resulting from the completion of the Sun Country acquisition and the integration of the companies.

Any forward-looking statements are based on information available to us today and we undertake no obligation to update publicly any forward-looking statements, whether as a result of future events, new information or otherwise.

Detailed financial information follows:

8

Allegiant Travel Company

Consolidated Statements of Loss(1)

(in thousands, except per share amounts)

(Unaudited)

Three Months Ended June 30, Percent Change

2026 2025 YoY

OPERATING REVENUES:

Passenger $ 822,491  $ 617,908  33.1  %

Third party products 45,758  33,649  36.0

Fixed fee contracts 45,723  17,019  168.7

Cargo 27,586  —  NM

Other 1,932  20,808  NM

Total operating revenues 943,490  689,384  36.9

OPERATING EXPENSES:

Aircraft fuel 307,669  165,752  85.6

Salaries and benefits 250,318  214,102  16.9

Station operations 95,551  75,248  27.0

Depreciation and amortization 70,709  68,519  3.2

Maintenance and repairs 49,252  36,379  35.4

Sales and marketing 35,194  26,837  31.1

Aircraft rent 7,015  11,023  (36.4)

Other 40,716  41,089  (0.9)

Special charges, net of recoveries 65,952  117,924  NM

Total operating expenses 922,376  756,873  21.9

OPERATING INCOME (LOSS) 21,114  (67,489) NM

OTHER (INCOME) EXPENSES:

Interest income (8,840) (10,359) (14.7)

Interest expense 40,072  35,756  12.1

Capitalized interest (4,937) (4,562) 8.2

Other, net 39  240  (83.8)

Total other expenses 26,334  21,075  25.0

LOSS BEFORE INCOME TAXES (5,220) (88,564) 94.1

INCOME TAX BENEFIT (360) (23,398) 98.5

NET LOSS $ (4,860) $ (65,166) 92.5

Loss per share to common shareholders:

Basic ($0.21) ($3.62) 94.2

Diluted ($0.21) ($3.62) 94.2

Shares used for computation(2)(3):

Basic 22,852  17,995  27.0

Diluted 22,852  17,995  27.0

(1)Second quarter results include the financial performance of Sun Country only for the period from and after May 13, 2026.

(2)The Company's unvested restricted stock awards are considered participating securities as they receive non-forfeitable rights to cash dividends at the same rate as common stock. The basic and diluted earnings per share calculations for the periods presented reflect the two-class method mandated by ASC Topic 260, "Earnings Per Share." The two-class method adjusts both the net income and the shares used in the calculation. Application of the two-class method did not have a significant impact on the basic and diluted earnings per share for the periods presented.

(3)The number of shares used for the earnings per share calculations are significantly impacted by the issuance of shares in connection with the Sun Country acquisition and the period of time such shares were outstanding.

NM    Not meaningful

9

Allegiant Travel Company

Segment Profit or Loss(1)

(in thousands)

(Unaudited)

Three Months Ended June 30, 2026 Three Months Ended June 30, 2025

Allegiant

Sun Country(2)

Consolidated Allegiant Sunseeker Consolidated

OPERATING REVENUES:

Passenger $ 717,016  $ 105,475  $ 822,491  $ 617,908  $ —  $ 617,908

Third party products 44,483  1,275  45,758  33,649  —  33,649

Fixed fee contracts 14,523  31,200  45,723  17,019  —  17,019

Cargo —  27,586  27,586  —  —  —

Other 185  1,747  1,932  174  20,634  20,808

Total operating revenues $ 776,207  $ 167,283  $ 943,490  $ 668,750  $ 20,634  $ 689,384

OPERATING EXPENSES:

Aircraft fuel 265,123  42,546  307,669  165,752  —  165,752

Salaries and benefits 201,337  48,981  250,318  203,485  10,617  214,102

Station operations 76,139  19,412  95,551  75,248  —  75,248

Depreciation and amortization 58,521  12,188  70,709  64,961  3,558  68,519

Maintenance and repairs 39,349  9,903  49,252  36,379  —  36,379

Sales and marketing 29,860  5,334  35,194  25,119  1,718  26,837

Aircraft rent 7,015  —  7,015  11,023  —  11,023

Other operating expenses 29,263  11,453  40,716  29,031  12,058  41,089

Special charges, net of recoveries 39,514  26,438  65,952  14,595  103,329  117,924

Total operating expenses 746,121  176,255  922,376  625,593  131,280  756,873

OPERATING INCOME/(LOSS) 30,086  (8,972) 21,114  43,157  (110,646) (67,489)

OTHER (INCOME) EXPENSES:

Interest income (8,093) (747) (8,840) (10,359) —  (10,359)

Interest expense 35,200  4,872  40,072  28,121  7,635  35,756

Capitalized interest (4,937) —  (4,937) (4,562) —  (4,562)

Other non-operating expenses 74  (35) 39  240  —  240

Total other expenses 22,244  4,090  26,334  13,440  7,635  21,075

INCOME (LOSS) BEFORE INCOME TAXES $ 7,842  $ (13,062) $ (5,220) $ 29,717  $ (118,281) $ (88,564)

(1)    Segment results for 2025 only are presented for Allegiant and Sunseeker Resort, as Sunseeker Resort was sold in September 2025. Following the acquisition of Sun Country Airlines on May 13, 2026, segment results for 2026 are presented for Allegiant and Sun Country.

(2)    Results include the financial performance of Sun Country only for the period from and after May 13, 2026.

10

Allegiant Travel Company

Airline Operating Statistics(1)

(Unaudited)

Three Months Ended June 30,

Percent Change(2)

2026 2025 YoY

AIRLINE OPERATING STATISTICS (CONSOLIDATED)

Total system statistics:

Passengers 5,753,539  5,127,025  12.2  %

Available seat miles (ASMs) (thousands) 6,406,325  5,799,409  10.5

Airline operating expense per ASM (CASM) (cents) 13.89   ¢ 10.79   ¢ 28.7

Airline operating CASM, excluding fuel, special charges and cargo expenses (cents) 8.19   ¢ 7.68   ¢ 6.6

Departures 42,833  37,314  14.8

Block hours 104,652  88,749  17.9

Average stage length (miles) 905  886  2.1

Average block hours per aircraft per day 7.2  7.7  (6.5)

Full-time equivalent employees at end of period 8,484  5,980  41.9

Fuel gallons consumed (thousands) 74,292  68,452  8.5

ASMs per gallon of fuel 86.2  84.7  1.8

Average fuel cost per gallon $ 4.14  $ 2.42  71.1

Scheduled service statistics:

Passengers 5,616,207  5,077,788  10.6

Revenue passenger miles (RPMs) (thousands) 5,226,070  4,610,321  13.4

Available seat miles (ASMs) (thousands) 6,097,107  5,629,040  8.3

Load factor 85.7  % 81.9  % 3.8

Departures 37,502  36,056  4.0

Block hours 92,259  85,980  7.3

Average seats per departure 177.0  175.1  1.1

Yield (cents)(3)

8.26   ¢ 5.75   ¢ 43.7

Total passenger revenue per ASM (TRASM) (cents)(4)

14.24   ¢ 11.57   ¢ 23.1

Average fare - scheduled service(5)

$ 76.90  $ 52.20  47.3

Average fare - air-related charges(5)

$ 69.55  $ 69.49  0.1

Average fare - third party products $ 8.15  $ 6.63  22.9

Average fare - total $ 154.60  $ 128.32  20.5

Average stage length (miles) 914  891  2.6

Fuel gallons consumed (thousands) 70,655  66,419  6.4

Average fuel cost per gallon $ 4.15  $ 2.43  70.8

Three Months Ended June 30, 2026

Allegiant Air Sun Country

AIRLINE OPERATING STATISTICS (BY SEGMENT)

Total system statistics:

Passengers 5,073,414 680,125

Available seat miles (ASMs) (thousands) 5,406,461 999,864

Departures 34,733 8,100

Scheduled service statistics:

Revenue passenger miles (RPMs) (thousands) 4,538,749 687,322

Available seat miles (ASMs) (thousands) 5,281,688 815,419

Block hours 80,881 11,378

Fuel cost per gallon, excluding indirect fuel credits $4.19 $3.87

(1)Prior year figures are not comparable because Sun Country figures are only included beginning after May 13, 2026.

(2)Except load factor, which is percentage point change.

(3)Defined as scheduled service revenue divided by revenue passenger miles.

(4)Various components of this measurement do not have a direct correlation to ASMs. These figures are provided on a per ASM basis to facilitate comparison with airlines reporting revenues on a per ASM basis.

(5)Reflects division of passenger revenue between scheduled service and air-related charges in Company's booking path.

11

Allegiant Travel Company

Consolidated Statements of Income (Loss)(1)

(in thousands, except per share amounts)

(Unaudited)

Six Months Ended June 30, Percent Change

2026 2025 YoY

OPERATING REVENUES:

Passenger $ 1,494,290  $ 1,234,658  21.0  %

Third party products 88,093  68,852  27.9

Fixed fee contracts 63,846  33,271  91.9

Cargo 27,586  —  NM

Other 2,106  51,677  NM

Total operating revenues 1,675,921  1,388,458  20.7

OPERATING EXPENSES:

Aircraft fuel 487,910  332,085  46.9

Salaries and benefits 468,403  445,541  5.1

Station operations 172,033  148,753  15.7

Depreciation and amortization 128,635  131,830  (2.4)

Maintenance and repairs 84,469  71,233  18.6

Sales and marketing 63,394  51,933  22.1

Aircraft rent 14,476  16,942  (14.6)

Other 60,649  76,259  (20.5)

Special charges, net of recoveries 93,734  116,369  NM

Total operating expenses 1,573,703  1,390,945  13.1

OPERATING INCOME (LOSS) 102,218  (2,487) NM

OTHER (INCOME) EXPENSES:

Interest income (17,554) (22,294) (21.3)

Interest expense 69,299  76,540  (9.5)

Capitalized interest (9,227) (11,050) (16.5)

Other, net (1,105) 941  (217.4)

Total other expenses 41,413  44,137  (6.2)

INCOME (LOSS) BEFORE INCOME TAXES 60,805  (46,624) NM

INCOME TAX EXPENSE (BENEFIT) 23,187  (13,560) NM

NET INCOME (LOSS) $ 37,618  $ (33,064) NM

Earnings (loss) per share to common shareholders:

Basic $1.80  ($1.84) NM

Diluted $1.80  ($1.84) NM

Shares used for computation(2)(3):

Basic 20,542  17,989  14.2

Diluted 20,634  17,989  14.7

(1)Results include the financial performance of Sun Country only for the period from and after May 13, 2026.

(2)The Company's unvested restricted stock awards are considered participating securities as they receive non-forfeitable rights to cash dividends at the same rate as common stock. The basic and diluted earnings per share calculations for the periods presented reflect the two-class method mandated by ASC Topic 260, "Earnings Per Share." The two-class method adjusts both the net income and the shares used in the calculation. Application of the two-class method did not have a significant impact on the basic and diluted earnings per share for the periods presented.

(3)The number of shares used for the earnings per share calculations are significantly impacted by the issuance of shares in connection with the Sun Country acquisition and the period of time such shares were outstanding.

NM    Not meaningful

12

Allegiant Travel Company

Segment Profit or Loss(1)

(in thousands)

(Unaudited)

Six Months Ended June 30, 2026 Six Months Ended June 30, 2025

Allegiant

Sun Country(2)

Consolidated Allegiant Sunseeker Consolidated

OPERATING REVENUES:

Passenger $ 1,388,815  $ 105,475  $ 1,494,290  $ 1,234,658  $ —  $ 1,234,658

Third party products 86,818  1,275  88,093  68,852  —  68,852

Fixed fee contracts 32,646  31,200  63,846  33,271  —  33,271

Cargo —  27,586  27,586  —  —  —

Other 359  1,747  2,106  355  51,322  51,677

Total operating revenues $ 1,508,638  $ 167,283  $ 1,675,921  $ 1,337,136  $ 51,322  $ 1,388,458

OPERATING EXPENSES:

Aircraft fuel 445,364  42,546  487,910  332,085  —  332,085

Salaries and benefits 419,422  48,981  468,403  423,859  21,682  445,541

Station operations 152,621  19,412  172,033  148,753  —  148,753

Depreciation and amortization 116,447  12,188  128,635  124,672  7,158  131,830

Maintenance and repairs 74,566  9,903  84,469  71,233  —  71,233

Sales and marketing 58,060  5,334  63,394  48,489  3,444  51,933

Aircraft rent 14,476  —  14,476  16,942  —  16,942

Other operating expenses

49,196  11,453  60,649  51,107  25,152  76,259

Special charges, net of recoveries 67,296  26,438  93,734  15,987  100,382  116,369

Total operating expenses 1,397,448  176,255  1,573,703  1,233,127  157,818  1,390,945

OPERATING INCOME (LOSS) 111,190  (8,972) 102,218  104,009  (106,496) (2,487)

OTHER (INCOME) EXPENSES:

Interest income (16,807) (747) (17,554) (22,294) —  (22,294)

Interest expense 64,427  4,872  69,299  57,070  19,470  76,540

Capitalized interest (9,227) —  (9,227) (11,050) —  (11,050)

Other non-operating expenses (1,070) (35) (1,105) 941  —  941

Total other expenses 37,323  4,090  41,413  24,667  19,470  44,137

INCOME (LOSS) BEFORE INCOME TAXES $ 73,867  $ (13,062) $ 60,805  $ 79,342  $ (125,966) $ (46,624)

(1)    Segment results for 2025 only are presented for Allegiant and Sunseeker Resort, as Sunseeker Resort was sold in September 2025. Following the acquisition of Sun Country Airlines on May 13, 2026, segment results for 2026 are presented for Allegiant and Sun Country.

(2)    Results include the financial performance of Sun Country only for the period from and after May 13, 2026.

13

Allegiant Travel Company

Airline Operating Statistics(1)

(Unaudited)

Six Months Ended June 30,

Percent Change(2)

2026 2025 YoY

AIRLINE OPERATING STATISTICS (CONSOLIDATED)

Total system statistics:

Passengers 10,182,002  9,578,331  6.3  %

Available seat miles (ASMs) (thousands) 11,536,867  11,250,993  2.5

Airline operating expense per ASM (CASM) (cents) 13.37   ¢ 10.96   ¢ 22.0

Airline operating CASM, excluding fuel, special charges, and cargo expenses (cents) 8.40   ¢ 7.87   ¢ 6.7

Departures 74,403  70,549  5.5

Block hours 183,475  172,620  6.3

Average stage length (miles) 906  909  (0.3)

Average block hours per aircraft per day 7.2  7.6  (5.3)

Full-time equivalent employees at end of period 8,484  5,980  41.9

Fuel gallons consumed (thousands) 133,492  132,089  1.1

ASMs per gallon of fuel 86.4  85.2  1.4

Average fuel cost per gallon $ 3.65  $ 2.51  45.4

Scheduled service statistics:

Passengers 10,014,314  9,498,599  5.4

Revenue passenger miles (RPMs) (thousands) 9,436,965  8,881,650  6.3

Available seat miles (ASMs) (thousands) 11,088,667  10,934,232  1.4

Load factor 85.1  % 81.2  % 3.9

Departures 67,974  68,189  (0.3)

Block hours 168,756  167,394  0.8

Average seats per departure 176.6  175.0  0.9

Yield (cents)(3)

8.38   ¢ 6.38   ¢ 31.3

Total passenger revenue per ASM (TRASM) (cents)(4)

14.27   ¢ 11.92   ¢ 19.7

Average fare - scheduled service(5)

$ 78.99  $ 59.64  32.4

Average fare - air-related charges(5)

$ 70.22  $ 70.34  (0.2)

Average fare - third party products $ 8.80  $ 7.25  21.4

Average fare - total $ 158.01  $ 137.23  15.1

Average stage length (miles) 920  914  0.7

Fuel gallons consumed (thousands) 128,197  128,245  —

Average fuel cost per gallon $ 3.65  $ 2.52  44.8

Six Months Ended June 30, 2026

Allegiant Air Sun Country

AIRLINE OPERATING STATISTICS (BY SEGMENT)

Total system statistics:

Passengers 9,501,877 680,125

Available seat miles (ASMs) (thousands) 10,537,003 999,864

Departures 66,303  8,100

Scheduled service statistics:

Revenue passenger miles (RPMs) (thousands) 8,749,644 687,322

Available seat miles (ASMs) (thousands) 10,273,248 815,419

Block hours 157,378 11,378

Fuel cost per gallon, excluding indirect fuel credits $3.63 $3.87

(1)Prior year figures are not comparable because Sun Country figures are only included beginning after May 13, 2026.

(2)Except load factor, which is percentage point change.

(3)Defined as scheduled service revenue divided by revenue passenger miles.

(4)Various components of this measurement do not have a direct correlation to ASMs. These figures are provided on a per ASM basis to facilitate comparison with airlines reporting revenues on a per ASM basis.

(5)Reflects division of passenger revenue between scheduled service and air-related charges in Company's booking path.

14

Summary Balance Sheet

(in millions) June 30, 2026

(unaudited)

December 31, 2025(1)

Percent Change

Unrestricted cash and investments

Cash and cash equivalents $ 508.7  $ 172.7  194.6  %

Short-term investments 544.8  633.0  (13.9)

Long-term investments 15.5  32.8  (52.7)

Total unrestricted cash and investments 1,069.0  838.5  27.5

Debt

Current maturities of long-term debt and finance lease obligations, net of related costs 318.7  118.1  169.9

Long-term debt and finance lease obligations, net of current maturities and related costs 2,460.8  1,681.5  46.3

Total debt 2,779.5  1,799.6  54.5

Debt, net of unrestricted cash and investments 1,710.5  961.1  78.0

Total Allegiant Travel Company shareholders’ equity 1,777.4  1,052.7  68.8

(1)    The December 31, 2025 figures do not include Sun Country as the acquisition did not close until May 13, 2026.

EPS Calculation

The following table sets forth the computation of net income per share, on a basic and diluted basis, for the periods indicated (share count and dollar amounts other than per-share amounts in table are in thousands):

Three Months Ended June 30, Six Months Ended June 30,

2026 2025 2026 2025

Basic:

Net income (loss) $ (4,860) $ (65,166) $ 37,618  $ (33,064)

Less income allocated to participating securities —  —  (540) —

Net income (loss) attributable to common stock $ (4,860) $ (65,166) $ 37,078  $ (33,064)

Earnings (loss) per share, basic $ (0.21) $ (3.62) $ 1.80  $ (1.84)

Weighted-average shares outstanding(1)

22,852  17,995  20,542  17,989

Diluted:

Net income (loss) $ (4,860) $ (65,166) $ 37,618  $ (33,064)

Less income allocated to participating securities —  —  (538) —

Net income (loss) attributable to common stock $ (4,860) $ (65,166) $ 37,080  $ (33,064)

Earnings (loss) per share, diluted $ (0.21) $ (3.62) $ 1.80  $ (1.84)

Weighted-average shares outstanding(1)(2)

22,852  17,995  20,542  17,989

Dilutive effect of restricted stock —  —  197  —

Adjusted weighted-average shares outstanding under treasury stock method 22,852  17,995  20,739  17,989

Participating securities excluded under two-class method —  —  (105) —

Adjusted weighted-average shares outstanding under two-class method 22,852  17,995  20,634  17,989

(1)The number of shares used for the earnings per share calculations are significantly impacted by the issuance of shares in connection with the Sun Country acquisition and the period of time such shares were outstanding.

(2)Dilutive effect of common stock equivalents excluded from the diluted per share calculation is not material.

15

Appendix A

Non-GAAP Presentation

Three and Six Months Ended June 30, 2026 and 2025

(Unaudited)

We present adjusted consolidated operating expense and adjusted consolidated operating income, which exclude special charges related to (i) the impact of losses and insurance recoveries incurred primarily as the result of hurricanes and other insured events at Sunseeker Resort, (ii) other charges related to the sale of Sunseeker, and (iii) the airline special charges listed in the table below. We also present adjusted consolidated interest expense, adjusted consolidated income before income taxes, adjusted consolidated net income, and adjusted consolidated diluted earnings per share, which exclude the special charges described above and losses on extinguishment of debt.

We present adjusted airline-only operating expense, adjusted airline-only operating income, adjusted airline-only income before income taxes, adjusted airline-only net income, and adjusted airline-only diluted earnings per share which exclude special charges and other costs related to (i) aircraft accelerated depreciation on early retirement of certain airframes, (ii) accelerated amortization of software identified to be redeveloped, (iii) costs related to the Sun Country acquisition, (iv) a credit loss on a note receivable, and (v) losses on extinguishment of debt.

All of the measures described above are non-GAAP financial measures. We believe the presentation of these measures is relevant and useful for investors because it allows them to better gauge the performance of the airlines and to compare our results to other airlines. Management believes the exclusion of these items enhances comparability of financial information between periods.

We also present adjusted airline-only CASM, which excludes aircraft fuel expense, special charges, and cargo expenses. Fuel price volatility impacts the comparability of year over year financial performance as do the airline special charges. Cargo expenses are excluded because they do not relate to available seat miles. We believe the adjustments for fuel expense, airline special charges, and cargo expenses allow investors to better understand our non-fuel costs and related performance.

Consolidated and airline-only earnings before interest, taxes, depreciation, and amortization ("Consolidated EBITDA" and "Airline EBITDA"), adjusted Consolidated EBITDA, adjusted Airline EBITDA, and estimated adjusted earnings per share, as presented in this press release, are supplemental measures of our performance that are not required by, or presented in accordance with, accounting principles generally accepted in the United States (“GAAP”). These are not measurements of our financial performance under GAAP and should not be considered in isolation or as an alternative to net income or any other performance measures derived in accordance with GAAP or as an alternative to cash flows from operating activities as a measure of our liquidity.

We define “EBITDA” as earnings before interest, taxes, depreciation and amortization. The adjusted EBITDA measures also exclude special charges and losses on the extinguishment of debt. We caution investors that amounts presented in accordance with this definition may not be comparable to similar measures disclosed by other issuers, because not all issuers and analysts calculate EBITDA in the same manner.

We use EBITDA and adjusted EBITDA to evaluate our operating performance and liquidity, and these are among the primary measures used by management for planning and forecasting of future periods. We believe these presentations of EBITDA are relevant and useful for investors because they allow investors to view results in a manner similar to the method used by management and make it easier to compare our results with other companies that have different financing and capital structures. EBITDA has important limitations as an analytical tool. These limitations include the following:

•EBITDA does not reflect our capital expenditures, future requirements for capital expenditures or contractual commitments to purchase capital equipment;

•EBITDA does not reflect interest expense or the cash requirements necessary to service principal or interest payments on our debt;

•although depreciation and amortization are non-cash charges, the assets that we currently depreciate and amortize will likely have to be replaced in the future, and EBITDA does not reflect the cash required to fund such replacements; and

•other companies in our industry may calculate EBITDA differently than we do, limiting its usefulness as a comparative measure.

Presented below is a quantitative reconciliation of these adjusted numbers (other than the estimated adjusted earnings per share and adjusted operating margin figures) to the most directly comparable GAAP financial performance measure.

The SEC has adopted rules (Regulation G) regulating the use of non-GAAP financial measures. Because of our use of non-GAAP financial measures in this press release to supplement our consolidated financial statements presented on a GAAP basis, Regulation G requires us to include in this press release a presentation of the most directly comparable GAAP measures, which are operating expenses, operating income (loss), interest expense, income (loss) before income taxes, net income, and earnings per share, and a reconciliation of the non-GAAP measures to the most comparable GAAP measure. Our utilization of non-GAAP measurements is not meant to be considered in isolation or as a substitute for operating expenses, operating income (loss), interest expense, income (loss) before income taxes, net income (loss), earnings (loss) per share, or other measures of financial performance prepared in accordance with GAAP. Our use of these non-GAAP measures may not be comparable to similarly titled

measures employed by other companies in the airline and travel industry. The reconciliation of each of these measures to the most comparable GAAP measure for the periods is indicated below.

16

Reconciliation of Non-GAAP Financial Measures

Three Months Ended June 30, Six Months Ended June 30,

2026 2025 2026 2025

Special Charges (millions)

Accelerated depreciation on airframes identified for early retirement $ 1.3  $ 2.5  $ 2.7  $ 3.9

Accelerated amortization of software identified for redevelopment 10.0  —  19.9  —

Integration costs 55.2  —  64.8  —

Organizational restructuring —  12.1  —  12.1

Credit loss on note receivable —  —  7.0  —

Airline special charges(2)

66.5  14.6  94.4  16.0

Sunseeker special charges, net of recoveries(2)

(0.6) 103.3  (0.7) 100.4

Consolidated special charges, net of recoveries(2)

$ 66.0  $ 117.9  $ 93.7  $ 116.4

Three Months Ended June 30, 2026

Consolidated Allegiant Air

Sun Country(4)

Reconciliation of adjusted operating expenses, adjusted operating income, adjusted operating margin, adjusted interest expense, and adjusted income before income taxes (millions) GAAP

Adjustments(2)(3)

Adjusted (Non-GAAP)(1)

GAAP

Adjustments(2)(3)

Adjusted (Non-GAAP)(1)

GAAP

Adjustments(2)

Adjusted (Non-GAAP)(1)

Total operating revenues $ 943.5  $ —  $ 943.5  $ 776.2  $ —  $ 776.2  $ 167.3  $ —  $ 167.3

Total operating expenses 922.4  (66.0) 856.4  746.1  (39.5) 706.6  176.3  (26.4) 149.8

Operating income (loss) $ 21.1  $ 66.0  $ 87.1  $ 30.1  $ 39.5  $ 69.6  $ (9.0) $ 26.4  $ 17.5

Operating margin (percent) 2.2  9.2  3.9  9.0  (5.4) 10.4

Interest expense $ 40.1  $ (3.7) $ 36.3  $ 35.2  $ (3.7) $ 31.5  $ 4.9  $ —  $ 4.9

INCOME (LOSS) BEFORE INCOME TAXES $ (5.2) $ 69.7  $ 64.5  $ 7.8  $ 43.3  $ 51.1  $ (13.1) $ 26.4  $ 13.4

Three Months Ended June 30, 2025

Consolidated Allegiant Air Sunseeker

Reconciliation of adjusted operating expenses, adjusted operating income (loss), adjusted operating margin, and adjusted income (loss) before income taxes (millions) GAAP

Adjustments(2)

Adjusted (Non-GAAP)(1)

GAAP

Adjustments(2)

Adjusted (Non-GAAP)(1)

GAAP

Adjustments(2)

Adjusted (Non-GAAP)(1)

Total operating revenues $ 689.4  $ —  $ 689.4  $ 668.8  $ —  $ 668.8  $ 20.6  $ —  $ 20.6

Total operating expenses 756.9  (117.9) 638.9  625.6  (14.6) 611.0  131.3  (103.3) 28.0

Operating income (loss) $ (67.5) $ 117.9  $ 50.4  $ 43.2  $ 14.6  $ 57.8  $ (110.6) $ 103.3  $ (7.3)

Operating margin (percent) (9.8) 7.3  6.5  8.6  NM (35.5)

INCOME (LOSS) BEFORE INCOME TAXES $ (88.6) $ 117.9  29.4 $ 29.7  $ 14.6  $ 44.3  $ (118.3) $ 103.3  $ (15.0)

17

Six Months Ended June 30, 2026

Consolidated Allegiant Air

Sun Country(4)

Reconciliation of adjusted operating expenses, adjusted operating income (loss), adjusted operating margin, adjusted interest expense, and adjusted income (loss) before income taxes (millions) GAAP

Adjustments(2)(3)

Adjusted (Non-GAAP)(1)

GAAP

Adjustments(2)(3)

Adjusted (Non-GAAP)(1)

GAAP

Adjustments(2)

Adjusted (Non-GAAP)(1)

Total operating revenues $ 1,675.9  $ —  $ 1,675.9  $ 1,508.6  $ —  $ 1,508.6  $ 167.3 $ —  $ 167.3

Total operating expenses 1,573.7  (93.7) 1,480.0  1,397.4  (67.3) 1,330.2  176.3 (26.4) 149.8

Operating income (loss) $ 102.2  $ 93.7  $ 196.0  $ 111.2  $ 67.3  $ 178.5  $ (9.0) $ 26.4  $ 17.5

Operating margin (percent) 6.1  11.7  7.4  11.8  (5.4) % 10.4

Interest expense $ 69.3  $ (3.7) $ 65.6  $ 64.4  $ (3.7) $ 60.7  $ 4.9  $ —  $ 4.9

INCOME (LOSS) BEFORE INCOME TAXES $ 60.8  $ 97.5  $ 158.3  $ 73.9  $ 71.0  $ 144.9  $ (13.1) $ 26.4  $ 13.4

Six Months Ended June 30, 2025

Consolidated Allegiant Air Sunseeker

Reconciliation of adjusted operating expenses, adjusted operating income (loss), adjusted operating margin, adjusted interest expense, and adjusted income (loss) before income taxes (millions) GAAP

Adjustments(2)(3)

Adjusted (Non-GAAP)(1)

GAAP

Adjustments(2)

Adjusted (Non-GAAP)(1)

GAAP

Adjustments(2)(3)

Adjusted (Non-GAAP)(1)

Total operating revenues $ 1,388.5  $ —  $ 1,388.5  $ 1,337.1  $ —  $ 1,337.1  $ 51.3  $ —  $ 51.3

Total operating expenses 1,390.9  (116.4) 1,274.6  1,233.1  (16.0) 1,217.1  157.8  (100.4) 57.4

Operating income (loss) $ (2.5) $ 116.4  $ 113.9  $ 104.0  $ 16.0  $ 120.0  $ (106.5) $ 100.4  $ (6.1)

Operating margin (percent) (0.2) 8.2  7.8  9.0  NM (11.9)

Interest expense $ 76.5  $ (3.4) $ 73.1  $ 57.1  $ —  $ 57.1  $ 19.5  $ (3.4) $ 16.1

INCOME (LOSS) BEFORE INCOME TAXES $ (46.6) $ 119.8  $ 73.2  $ 79.3  $ 16.0  $ 95.3  $ (126.0) $ 103.8  $ (22.2)

18

Three Months Ended June 30, Six Months Ended June 30,

2026 2025 2026 2025

Consolidated EBITDA and adjusted consolidated EBITDA (millions)(4)

Net income as reported (GAAP) $ (4.9) $ (65.2) $ 37.6  $ (33.1)

Interest expense, net 26.3  20.8  42.5  43.2

Income tax expense (0.4) (23.4) 23.2  (13.6)

Depreciation and amortization 70.7  68.5  128.6  131.8

Consolidated EBITDA(1)

$ 91.8  $ 0.8  $ 232.0  $ 128.4

Special charges, net of recoveries(2)

66.0  117.9  93.7  116.4

Adjusted consolidated EBITDA(1)(2)

$ 157.7  $ 118.7  $ 325.7  $ 244.8

Adjusted consolidated EBITDA margin(1)(2)

16.7  % 17.2  % 19.4  % 17.6  %

Adjusted Allegiant Air-only EBITDA (millions)

Allegiant income before income taxes as reported (GAAP) $ 7.8  $ 29.7  $ 73.9  $ 79.3

Allegiant special charges(2)

39.5  14.6  67.3  16.0

Allegiant interest expense, net(3)

22.2  13.2  38.4  23.7

Allegiant depreciation and amortization 58.5  65.0  116.4  124.7

Allegiant-only EBITDA(1)(2)(3)

$ 128.0  $ 122.5  $ 296.0  $ 243.7

Allegiant-only EBITDA margin(1)(2)(3)

16.5  % 18.3  % 19.6  % 18.2  %

Three Months Ended June 30, 2026 Three Months Ended June 30, 2025

Consolidated Amount Per Share Amount Per Share

Reconciliation of adjusted consolidated earnings per share and adjusted consolidated net income (millions except share and per share amounts)

Net income (loss) as reported (GAAP) $ (4.9) $ (65.2)

Less: Net income allocated to participating securities —  —

Net income (loss) attributable to common stock (GAAP) $ (4.9) $ (0.21) $ (65.2) $ (3.62)

Plus: Loss on extinguishment of debt(3)

3.7  0.16  —  —

Plus: Special charges, net of recoveries(2)

66.0  2.89  117.9  6.55

Minus: Income tax effect of adjustments above (13.8) (0.60) (30.0) (1.67)

Adjusted net income(1)

$ 51.1  $ 22.7

Less: Adjusted consolidated net income allocated to participating securities (0.8) (0.03) (0.5) (0.03)

Effect of dilutive securities (0.01) —

Adjusted net income attributable to common stock(1)

$ 50.3  $ 2.19  $ 22.2  $ 1.23

Shares used for diluted computation (GAAP) (thousands) 22,852  17,995

Shares used for diluted computation (adjusted) (thousands) 22,975  18,027

19

Six Months Ended June 30, 2026 Six Months Ended June 30, 2025

Consolidated Amount Per Share Amount Per Share

Reconciliation of adjusted consolidated earnings per share and adjusted consolidated net income (millions except share and per share amounts)

Net income (loss) as reported (GAAP) $ 37.6  $ (33.1)

Less: Net income allocated to participating securities (0.5) —

Net income (loss) attributable to common stock (GAAP) $ 37.1  $ 1.80  $ (33.1) $ (1.84)

Plus: Net income allocated to participating securities 0.5  0.03  —  —

Plus: Loss on extinguishment of debt(3)

3.7  0.18  3.4  0.19

Plus: Special charges, net of recoveries(2)

93.7  4.54  116.4  6.47

Minus: Income tax effect of adjustments above (14.4) (0.70) (30.5) (1.70)

Adjusted net income(1)

$ 120.7  $ 56.2

Less: Adjusted consolidated net income allocated to participating securities (1.7) (0.08) (1.4) (0.08)

Effect of dilutive securities —  (0.01)

Adjusted net income attributable to common stock(1)

$ 119.0  $ 5.77  $ 54.8  $ 3.03

Shares used for diluted computation (GAAP) (thousands) 20,634  17,989

Shares used for diluted computation (adjusted) (thousands) 20,634  18,076

Three Months Ended June 30, Six Months Ended June 30,

2026 2025 2026 2025

Reconciliation of adjusted airline-only operating CASM excluding fuel, special charges and cargo (millions)

Consolidated operating expenses (GAAP) $ 922.4  $ 756.9  $ 1,573.7  $ 1,390.9

Minus: Sunseeker operating expenses —  131.3  —  157.8

Airline-only operating expenses 922.4  625.6  1,573.7  1,233.1

Minus: airline special charges(2)

66.0  14.6  93.7  16.0

Minus: fuel expenses 307.7  165.8  487.9  332.1

Minus: cargo expenses 24.1  —  24.1  —

Adjusted airline-only operating expenses, excluding fuel, special charges and cargo expenses(1)(2)

$ 524.6  $ 445.2  $ 968.0  $ 885.0

System available seat miles (millions)(5)

6,406.3  5,799.4  11,536.9  11,251.0

Airline-only cost per available seat mile (cents) 13.89  10.79  13.37  10.96

Adjusted airline-only cost per available seat mile excluding fuel, special charges and cargo expenses (cents)(2)(3)

8.19  7.68  8.40  7.87

(1)Denotes non-GAAP figure.

(2)In 2026 and 2025, we recognized certain expenses as special charges related to both: (1) Airline activities including accelerated depreciation on airframes identified for early retirement, accelerated amortization of software identified for redevelopment, costs related to the Sun Country Airlines acquisition, organizational restructuring, and a credit loss on a note receivable, and (2) Sunseeker Resort including costs related to the sale of the resort and weather-related damages (net of recoveries). For a listing of these charges, see the special charges table above. The adjusted numbers in this earnings release exclude the effect of these special charges.

(3)In 2026 and 2025, the Company incurred losses on debt extinguishment related to prepayment of debt facilities. These are added back, where appropriate, in our adjusted results.

(4)Results include the financial performance of Sun Country only for the period from and after May 13, 2026.

(5)Available seat miles do not include cargo.

*    Note that amounts may not recalculate due to rounding

20

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a2q26-ecpresentation_mas

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D August 4, 2026 2Q26 Earnings Presentation

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D Forward looking statements Under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, statements in this press release that are not historical facts are forward-looking statements. These forward-looking statements are only estimates or predictions based on our management's beliefs and assumptions and on information currently available to our management. Forward-looking statements include our statements regarding future airline operations, revenue, expenses and earnings, available seat mile growth, expected capital expenditures, the cost of fuel, the timing of aircraft acquisitions and retirements, the number of contracted aircraft to be placed in service in the future, our ability to consummate announced aircraft transactions, estimated tax rate, as well as other information concerning future results of operations, business strategies, financing plans, industry environment and potential growth opportunities. Forward-looking statements include all statements that are not historical facts and can be identified by the use of forward-looking terminology such as the words "believe," "expect," “guidance,” "anticipate," "intend," "plan," "estimate", “project”, “hope” or similar expressions. Forward-looking statements involve risks, uncertainties and assumptions. Actual results may differ materially from those expressed in the forward-looking statements. Important risk factors that could cause our results to differ materially from those expressed in the forward-looking statements generally may be found in our periodic reports filed with the Securities and Exchange Commission at www.sec.gov. These risk factors include, without limitation, regulatory reviews of, and production limits on, Boeing impacting our aircraft delivery schedule, an accident involving, or problems with, our aircraft, public perception of our safety, our reliance on our automated systems, our reliance on Boeing to deliver aircraft under contract to us on a timely basis, risk of breach of security of personal data, volatility of fuel costs, labor issues and costs, the ability to obtain regulatory approvals as needed in connection with our fleet and network, the effect of economic conditions on leisure travel, debt covenants and balances, the impact of government regulations on the airline industry, the ability to finance aircraft to be acquired, the ability to obtain necessary government approvals to offer international service, terrorist attacks, risks inherent to airlines, our competitive environment, our reliance on third parties who provide facilities or services to us, the impact of the possible loss of key personnel, economic and other conditions in markets in which we operate, increases in maintenance costs and availability of outside maintenance contractors to perform needed work on our aircraft on a timely basis and at acceptable rates, cyclical and seasonal fluctuations in our operating results, and the perceived acceptability of our environmental, social and governance efforts, the risk that the combined company after the Sun Country acquisition will not realize expected benefits, cost savings, accretion, synergies and/or growth from the Sun Country acquisition or that any of the foregoing may take longer to realize or be more costly to achieve than expected; the diversion of management's attention and time from ongoing business operations and opportunities to integration matters; the risk that the integration of Sun Country's operations will be materially delayed or will be more costly or difficult than expected or that Allegiant is otherwise unable to successfully integrate Sun Country's businesses into its businesses; and reputational risk and potential adverse reactions of Allegiant's or Sun Country's customers, suppliers, employees, labor unions or other business partners, including those resulting from the completion of the Sun Country acquisition and the integration of the companies. Any forward-looking statements are based on information available to us today and we undertake no obligation to update publicly any forward-looking statements, whether as a result of future events, new information or otherwise. 2

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 3 Reporting Period Definitions Term Definition 2Q26 (Full Quarter) April 1, 2026 – June 30, 2026 Stub Period May 13, 2026 – June 30, 2026 (post-close period) Combined/Consolidated Results Allegiant and Sun Country results presented together for the applicable period Standalone Results Results for Allegiant or Sun Country, excluding the other company.

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 4 Greg Anderson Chief Executive Officer

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 5 Record Results Demonstrate Strength of Business Model • Welcoming Sun Country team members to the Allegiant family First earnings call together following the May 13 transaction close • Record quarterly revenue with more than 20% TRASM growth at both brands Allegiant and Sun Country each delivered exceptional unit revenue performance • Industry leading operating margin for a third consecutive quarter Underscoring the strength and resilience of both standalone business models • Operational execution remained strong through close and the summer peak Industry-leading controllable completion and mishandled-bag performance; inflight NPS remained healthy • Sun Country acquisition closed May 13 June, our first full month post-close and a peak summer demand period, was particularly strong for both companies • Disciplined growth supported by a strong operating foundation Early performance demonstrates the potential of the combined company (1) All adjusted numbers are non-GAAP. Please see the appendix for a reconciliation of each non- GAAP number to the most comparable GAAP measure. Please see the earnings release for discussion as to why management believes presentation of these non-GAAP figures to be useful to investors

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 6 Sustainable Competitive Advantages Outstanding service builds deep customer loyalty Approximately 70% of customers are repeat fliers Low-utilization model maximizes the most profitable flying “Peak the peaks” while reducing capacity that does not meet financial hurdles Aircraft ownership creates operational flexibility and a structural cost advantage MAX aircraft represented 21% of 2Q26 ASMs vs. 11% in 2Q25 Deep community relationships create powerful local brand equity Allegiant and Sun Country rank number #1 or #2 in ~95% of originating markets Strong balance sheet provides a critical competitive advantage Deleveraging efforts and the Sun Country combination further strengthen financial flexibility Better positioned today than at any point in company history. 1 2 3 4 5

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 7 Commercial Initiatives Gaining Momentum • Modernized technology is expanding commercial capabilities Enhanced digital, data, and distribution capabilities • Existing initiatives continue to mature and drive TRASM growth Allegiant Extra, improved bundling, and network optimization • Co-brand remuneration increased 24% year over year Planned enhancements to drive higher remuneration from 5% of revenue to 10% • Expedia partnership expands access to new customers Direct API connection complements core direct channels • Allegiant First will expand the premium product offering New product expected to phase in on select aircraft beginning in 2027 • Broader commercial platform supports sustained earnings momentum Initiatives strengthen the customer value proposition and create long-term ….growth opportunities

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 8 Integration Advancing Across the Business • Rapid close reflects strong alignment and early momentum Both airlines continue to perform well while integration progresses • Customer and commercial integration is underway Cross-brand flight search is live and teams are beginning to optimize the combined …..network • Combined scale is creating procurement opportunities Supplier consolidation and Las Vegas airport real estate integration are advancing • Single Operating Certificate transition plan submitted to the FAA Approval targeted in the first half of 2028 • Temporary MSP capacity reductions address elevated fuel and pilot attrition Expanded training classes are full, supporting a return to growth in 2027 • New Allegiant pilot agreement ratified with nearly 80% support Recognizes our pilots while preserving the work rules that support the differentiated ….scheduling model

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 9 Disciplined Execution Supports the Outlook • Expect 3Q26 unit revenue growth inline with 2Q26 increase of 24.6% • Combined company expected to generate an operating profit in the seasonally weakest quarter Meaningful improvement from over the past two years despite current higher fuel price • Strong bookings continue to support broad-based demand Capacity will remain actively managed through the volatile fuel environment • Full-year 2026 EPS for the combined entity expected to be at least $6.00 Assumes an average fuel cost of approximately $3.75 per gallon for the last six months of the year • Fuel remains the largest source of earnings volatility Each $0.10 per gallon change represents approximately $0.50 of combined-company EPS • Full-year margin expansion remains on track Focused on service, operational reliability, capacity discipline, cost control, and integration synergies • Analyst Day scheduled for December 7 in Las Vegas Deeper business review, integration update, and long-term financial framework

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 10 Drew Wells Executive Vice President, Chief Commercial Officer

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 11 Record 2Q Revenue and TRASM on Reduced Capacity 669 776 2Q25A 2Q26A Allegiant Standalone Total Revenue ($mm) 2Q26 vs 2Q25 11.57¢ 14.42¢ 2Q25A 2Q26A Allegiant Standalone TRASM (Cents) 2Q26 vs 2Q25 +16.1% y/y +24.6% y/y • $776 million standalone Allegiant total revenue, +16.1% YoY Record quarterly revenue on 6.8% lower system capacity • 14.42¢ standalone Allegiant TRASM, +24.6% YoY All-time Allegiant record • Yield increased more than 40%, load factor approximately four points and third-party revenue per passenger more than 30% Broad-based improvement across nearly every revenue lever • Scheduled service air revenue increased $102 million YoY More than offset the $99 million increase in fuel expense • $943.5 million of combined total revenue Includes Sun Country contribution from May 13 through quarter-end

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 12 Diversified Revenue Streams Add Stability and Flexibility • $14.5 million of standalone Allegiant fixed fee revenue Down 14.7% YoY and in line with expectations • $65.7 million of standalone Sun Country fixed fee revenue – full quarter - 2Q26 Record full-quarter result • $50.6 million of standalone Sun Country cargo revenue – full quarter - 2Q26 Record full-quarter result with additional aircraft entering the program; ….expectation that revenue will ramp slightly in full quarter - 3Q26 • Fixed fee and cargo programs include contractual fuel pass-throughs Provide a predictable margin foundation across fuel environments • Long-term fixed fee and cargo programs represent approximately 9% of trailing-twelve-month revenue Scheduled service capacity can be flexed around contracted flying Additional fixed-fee opportunities can provide upside • 12.64¢ standalone Sun Country TRASM, +22% YoY Strong performance despite stage length nearly 20% longer than Allegiant 431.9 390.6 45.8 45.7 27.6 1.9 2Q26 Charters Scheduled Service Ancillary Third Party Cargo Other Consolidated Revenue Breakdown (mm) 2Q26 $943.5

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 13 Peak-Focused Network Supports Strong 3Q Revenue Outlook • 39 new standalone Allegiant markets launched during the first half of 2026 Represent 9% to 10% of 2Q and 3Q ASMs and are outperforming expectations • Peak-day capacity increased ~1% despite 6.2% lower scheduled service ASMs Schedule deliberately concentrated around the strongest demand periods • Cash sales increased double digits through July Demand remains healthy into the off-peak fall • 3Q total revenue expected to increase approximately 16.5% Compared with combined airline-only 3Q25 revenue of approximately $808 million • Combined 3Q scheduled service ASMs expected to decline ~5.5% Compared with a pro forma prior-year base of 6.1 billion ASMs • Downward bias remains for 4Q capacity Full-year combined ASMs expected to decline mid-single digits 0.2% 2.4% 0.7% 2.6% Thu Fri Sun Mon Year-Over-Year Departures by Day of Week 2Q26 vs 2Q25 (24.4%) (24.1%) (47.2%) Wed Sat Tue 1.5% peak days (28.4%) off-peak peak days

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 14 Initiatives Expanding Customer Reach and Revenue • First external distribution connection with Expedia - fully live as of July 10 Approximately 3% of bookings since launch; meaningfully more than half from net ….new customers • Simplified airfare-only offering on Expedia preserves commercial flexibility Allegiant retains the post-purchase ancillary sales opportunity • Shared Navitaire platform simplifies integration Supports faster alignment of policies, products and customer experience • Air ancillary revenue per passenger expected to increase in 3Q Merchandising and dynamic pricing capabilities are reaching a broader share of ….bookings • Allegiant standalone co-brand bank compensation increased 24% YoY New cardholder acquisition grew faster than compensation; July expected to set a ….record Allegiant Sun Country

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 15 Allegiant First Expands Premium Offering •Allegiant First expected to debut in spring 2027 Logical next step following the strong performance of Allegiant Extra •Customer profile supports additional premium products Designed around customer priorities, with additional legroom and recline •New Recaro seating will enhance the entire cabin Improved seat cushions and in-seat power across First, Extra, and Main Cabin •Eight Allegiant First seats with minimal impact to density New MAX layout reduces total seat count by two, from 190 to 188 seats Product to be introduced only on new MAX deliveries beginning in 2027

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 16 Robert Neal President and Chief Financial Officer

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 9.2% 8.6% 2Q25 2Q26 17 Industry-Leading Profitability Despite Elevated Fuel • GAAP consolidated loss before taxes of ($5.2) million in 2Q26 With Sun Country contributing ($13.1) million loss during the period • Adjusted consolidated income before taxes of $64.5 million1 in 2Q26 With Sun Country contributing $13.4 million during the period • GAAP consolidated loss per share of ($0.21) in 2Q26 • Adjusted consolidated EPS of $2.191 in 2Q26 • Adjusted consolidated operating margin of 9.2%1 in 2Q26 Best of any U.S. carrier this quarter • Adjusted EBITDA of nearly $158 million1 in 2Q26 With Sun Country contributing $29.7 million during the period • Adjusted EBITDA margin of 16.7% in 2Q26 Consolidated Adjusted Operating Margin1 2Q26 vs 2Q25 Prior-year reference Allegiant airline-only results (1) All adjusted numbers are non-GAAP. Please see the appendix for a reconciliation of each non-GAAP number to the most comparable GAAP measure. Please see the earnings release for discussion as to why management believes presentation of these non-GAAP figures to be useful to investors $4.14 $2.42 2Q25A 2Q26A Consolidated Fuel Cost per Gallon 2Q26 vs 2Q25 Prior-year reference Allegiant standalone results +71% - y/y +0.6pts - y/y

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 6.4% (6.8%) 18 3Q Expected to Mark Peak Non-Fuel Unit Cost Pressure • 8.17¢ standalone Allegiant CASMex, +6.4% YoY On 6.8% lower capacity • 2Q CASMex came in modestly better than recent guidance Maintenance and labor expense timing contributed to the favorability • 3Q expected to mark the peak YoY CASMex increase Certain expenses shifted from the second quarter into the third quarter • New Allegiant pilot CBA increases benefits and payroll-related costs Wage rates increase approximately 2% from accrued bonus rates, with additional 401(k) and benefit costs • Productivity improvements expected ahead of the March 2027 peak Cost pressure should begin to abate as crew productivity improves • Lower planned capacity adds near-term unit cost pressure Approximately 5.5% of planned capacity removed Allegiant Standalone CASMex Fuel and Specials1 & ASM 2Q26 Year-Over-Year (1) All adjusted numbers are non-GAAP. Please see the appendix for a reconciliation of each non-GAAP number to the most comparable GAAP measure. Please see the earnings release for discussion as to why management believes presentation of these non-GAAP figures to be useful to investors ASM CASMex

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 19 Strong Liquidity Supports Planned 2026 Cash Needs • $188 million of combined capital expenditures in 2Q26 Includes $157 million of aircraft-related and $31 million of other capital expenditures • $18 million invested in deferred heavy maintenance Across both airlines • FY26 capital expenditures now expected to be approximately $850 million Includes Sun Country and incremental PDP payments for 2027 aircraft • $1.3 billion of total liquidity at quarter-end Includes $1.1 billion of cash and investments and a $250 million undrawn revolver • $2.8 billion of total debt and $1.7 billion of net debt Pro forma net leverage of approximately 2.6x • $650 million of senior secured notes issued during June 2031 maturity and 7.125% coupon; $378 million used in 2Q26 to repurchase 2027 notes • Approximately $275 million pilot retention bonus expected to be paid in the coming weeks Fully contemplated in liquidity planning and funded with cash on hand • More than $750 million of financing commitments secured, excluding the bond refinance Approximately $200 million drawn at quarter-end with approximately $550 million available into 2027 • No additional financing commitments expected until 2027 Remaining 2026 aircraft deliveries expected to be unencumbered at year-end 4.1x 3.2x 2.6x 2.6x 2.6x 2.3x 1.8x 2.6x 3Q24 4Q24 1Q25 2Q25 3Q25 4Q25 1Q26 2Q26 Net Leverage (Net Debt / Adj. EBITDA) 3Q24 - 2Q26 (pro forma TTM Adj. EBITDA) 33% 34% 37% 34% 40% 32% 36% 27% 3Q24 4Q24 1Q25 2Q25 3Q25 4Q25 1Q26 2Q26 Cash & Equivalents as % of TTM Airline Revenue 3Q24 - 2Q26 (pro forma TTM revenues for 2Q26)

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 20 Fleet Ownership and Delivery Access Preserve Strategic Flexibility 77 76 73 28 27 26 19 21 25 44 43 43 22 22 22 2Q26A 3Q26E YE26E Fleet Plan Outlook1 2Q26 - YE26E A320 A319 B737 MAX-8 B737-800 Sun Country’s Cargo Fleet 193 • 193 aircraft in the combined operating fleet at quarter-end 105 A320 family, 66 737 passenger and 22 737 cargo aircraft • Six additional MAX expected in service through year-end Six MAX aircraft entering service in 2H26, offset by seven aircraft retirements • Year-end combined operating fleet expected at 192 aircraft 2027 MAX deliveries will include the Allegiant First configuration (1) Excludes 3 Sun Country’s aircraft out on lease 192 192 3 3 3 B737-900ER

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 21 Outlook Summary 3Q26 System ASMs – y/y change(5) (~6.5%) Scheduled service ASMs – y/y change(5) (~5.5%) Fuel cost per gallon $3.80 Adjusted operating margin(1) 1.0% to 3.0% Interest expense(2) (millions) ~$50 Capitalized interest(2) (millions) (~$7) Interest income (million) ~$12 Weighted average shares outstanding (millions) 27.3 Adjusted earnings per share(1) ($1.00) to ($0.00) Third Quarter Guidance For The Combined Allegiant And Sun Country Entity FY 2026 Aircraft-related capital expenditures (3) (millions) $640 to $660 Capitalized deferred heavy maintenance (millions) $75 to $85 Other airline capital expenditures (millions) $115 to $125 Recurring principal payments (millions) (4) $205 to $215 Full-Year CapEx For The Combined Allegiant And Sun Country Entity (1) Denotes a non-GAAP financial measure for which no reconciliation to GAAP is provided as described in earnings release. (2) Includes capitalized interest related to pre-delivery deposits on new aircraft (3) Aircraft-related capital expenditures include the purchase of aircraft, engines, induction costs, and pre-delivery deposits. This amount excludes capitalized interest related to pre-delivery deposits on new aircraft. (4) Does not include repayment of pre-delivery deposit debt facilities due on delivery of aircraft (5) Year-over-year change is calculated relative to prior-year combined entity pro forma available seat miles (ASMs) for the three months ended September 30, 2025, of 6,710,010 (in thousands) for total system and 6,143,764 (in thousands) for scheduled service FY 2026 Fuel cost per gallon $3.70 Weighted average shares outstanding (millions) 23.9 Adjusted earnings per share(1) >$6.00 Full-Year 2026 Guidance For The Combined Allegiant And Sun Country Entity

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D Q&A 22

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D Q&A 23 Appendix

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 24 Non-GAAP Financial Measures Reconciliation 1. Denotes non-GAAP figure. 2. In 2026 and 2025, we recognized certain expenses as special charges related to both: (1) Airline activities including accelerated depreciation on airframes identified for early retirement, accelerated amortization of software identified for redevelopment, costs related to the Sun Country Airlines acquisition, organizational restructuring, and a credit loss on a note receivable, and (2) Sunseeker Resort including costs related to the sale of the resort and weather-related damages (net of recoveries). For a listing of these charges, see the special charges table above. The adjusted numbers in this earnings release exclude the effect of these special charges. 3. In 2026 and 2025, the Company incurred losses on debt extinguishment related to prepayment of debt facilities. These are added back, where appropriate, in our adjusted results. 4. Results include the financial performance of Sun Country only for the period after May 13, 2026. *Note that amounts may not recalculate due to rounding 2026 2025 2026 2025 Consolidated EBITDA and adjusted consolidated EBITDA (millions)⁽⁴⁾ Net income as reported (GAAP) $ (4.9) $ (65.2) $ 37.6 $ (33.1) Interest expense, net 26.3 20.8 42.5 43.2 Income tax expense (0.4) (23.4) 23.2 (13.6) Depreciation and amortization 70.7 68.5 128.6 131.8 Consolidated EBITDA⁽¹⁾ $ 91.8 $ 0.8 $ 232.0 $ 128.4 Special charges, net of recoveries⁽²⁾ 66.0 117.9 93.7 116.4 Adjusted consolidated EBITDA⁽¹⁾⁽²⁾ $ 157.7 $ 118.7 $ 325.7 $ 244.8 Adjusted consolidated EBITDA margin⁽¹⁾⁽²⁾ 16.7% 17.2% 19.4% 17.6% Adjusted Allegiant Air-only EBITDA (millions) Allegiant income before income taxes as reported (GAAP) $ 7.8 $ 29.7 $ 73.9 $ 79.3 Allegiant special charges⁽²⁾ 39.5 14.6 67.3 16.0 Allegiant interest expense, net⁽³⁾ 22.2 13.2 38.4 23.7 Allegiant depreciation and amortization 58.5 65.0 116.4 124.7 Allegiant-only EBITDA⁽¹⁾⁽²⁾⁽³⁾ $ 128.0 $ 122.5 $ 296.0 $ 243.7 Allegiant-only EBITDA margin⁽¹⁾⁽²⁾⁽³⁾ 16.5% 18.3% 19.6% 18.2% Three Months Ended June 30, Six Months Ended June 30,

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 25 Non-GAAP Financial Measures Reconciliation 1. Denotes non-GAAP figure. 2. In 2026 and 2025, we recognized certain expenses as special charges related to both: (1) Airline activities including accelerated depreciation on airframes identified for early retirement, accelerated amortization of software identified for redevelopment, costs related to the Sun Country Airlines acquisition, organizational restructuring, and a credit loss on a note receivable, and (2) Sunseeker Resort including costs related to the sale of the resort and weather-related damages (net of recoveries). For a listing of these charges, see the special charges table above. The adjusted numbers in this earnings release exclude the effect of these special charges. 3. In 2026 and 2025, the Company incurred losses on debt extinguishment related to prepayment of debt facilities. These are added back, where appropriate, in our adjusted results. 4. Results include the financial performance of Sun Country only for the period after May 13, 2026. *Note that amounts may not recalculate due to rounding Three Months Ended June 30, 2026 Consolidated Allegiant Air Sun Country⁽⁴⁾ GAAP Adjustments ⁽²⁾⁽³⁾ Adjusted (Non-GAAP)⁽¹⁾ GAAP Adjustments ⁽²⁾⁽³⁾ Adjusted (Non-GAAP)⁽¹⁾ GAAP Adjustments ⁽²⁾ Adjusted (Non- GAAP)⁽¹⁾ Total operating revenues $ 943.5 $ — $ 943.5 $ 776.2 $ — $ 776.2 $ 167.3 $ — $ 167.3 Total operating expenses 922.4 (66.0) 856.4 746.1 (39.5) 706.6 176.3 (26.4) 149.8 Operating income (loss) $ 21.1 $ 66.0 $ 87.1 $ 30.1 $ 39.5 $ 69.6 $ (9.0) $ 26.4 $ 17.5 Operating margin (percent) 2.2 9.2 3.9 9.0 (5.4) 10.4 Interest expense $ 40.1 $ (3.7) $ 36.3 $ 35.2 $ (3.7) $ 31.5 $ 4.9 $ — $ 4.9 INCOME (LOSS) BEFORE INCOME TAXES $ (5.2) $ 69.7 $ 64.5 $ 7.8 $ 43.3 $ 51.1 $ (13.1) $ 26.4 $ 13.4 Reconciliation of adjusted operating expenses, adjusted operating income, adjusted operating margin, adjusted interest expense and adjusted income before income taxes (millions)

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 26 Non-GAAP Financial Measures Reconciliation 1. Denotes non-GAAP figure. 2. In 2026 and 2025, we recognized certain expenses as special charges related to both: (1) Airline activities including accelerated depreciation on airframes identified for early retirement, accelerated amortization of software identified for redevelopment, costs related to the Sun Country Airlines acquisition, organizational restructuring, and a credit loss on a note receivable, and (2) Sunseeker Resort including costs related to the sale of the resort and weather-related damages (net of recoveries). For a listing of these charges, see the special charges table above. The adjusted numbers in this earnings release exclude the effect of these special charges. 3. In 2026 and 2025, the Company incurred losses on debt extinguishment related to prepayment of debt facilities. These are added back, where appropriate, in our adjusted results. 4. Available seat miles do not include cargo. *Note that amounts may not recalculate due to rounding Three Months Ended June 30, Six Months Ended June 30, 2026 2025 2026 2025 Reconciliation of adjusted airline-only operating CASM excluding fuel, special charges and cargo (millions) Consolidated operating expenses (GAAP) $ 922.4 $ 756.9 $ 1,573.7 $ 1,390.9 Minus: Sunseeker operating expenses — 131.3 — 157.8 Airline-only operating expenses 922.4 625.6 1,573.7 1,233.1 Minus: airline special charges⁽²⁾ 66.0 14.6 93.7 16.0 Minus: fuel expenses 307.7 165.8 487.9 332.1 Minus: cargo expenses 24.1 — 24.1 — Adjusted airline-only operating expenses, excluding fuel, special charges and cargo expenses⁽¹⁾⁽²⁾ $ 524.6 $ 445.2 $ 968.0 $ 885.0 System available seat miles (millions)(4) 6,406.3 5,799.4 11,536.9 11,251.0 Airline-only cost per available seat mile (cents) 13.89 10.79 13.37 10.96 Adjusted airline-only cost per available seat mile excluding fuel, special charges and cargo expenses (cents)⁽²⁾⁽³⁾ 8.19 7.68 8.40 7.87

#FD8103 #005595 #FFD105 #394B5D #38AC49 #394B5D #8294A6#FF5E1D 27 Non-GAAP Financial Measures Reconciliation 1. Denotes non-GAAP figure. 2. In 2026 and 2025, we recognized certain expenses as special charges related to both: (1) Airline activities including accelerated depreciation on airframes identified for early retirement, accelerated amortization of software identified for redevelopment, costs related to the Sun Country Airlines acquisition, organizational restructuring, and a credit loss on a note receivable, and (2) Sunseeker Resort including costs related to the sale of the resort and weather-related damages (net of recoveries). For a listing of these charges, see the special charges table above. The adjusted numbers in this earnings release exclude the effect of these special charges. 3. In 2026 and 2025, the Company incurred losses on debt extinguishment related to prepayment of debt facilities. These are added back, where appropriate, in our adjusted results. *Note that amounts may not recalculate due to rounding Amount Per Share Amount Per Share Net income (loss) as reported (GAAP) $ (4.9) $ (65.2) Less: Net income allocated to participating securities — — Net income (loss) attributable to common stock (GAAP) $ (4.9) $ (0.21) $ (65.2) $ (3.62) Plus: Loss on extinguishment of debt⁽³⁾ 3.7 0.16 — — Plus: Special charges, net of recoveries⁽²⁾ 66.0 2.89 117.9 6.55 Minus: Income tax effect of adjustments above (13.8) (0.60) (30.0) (1.67) Adjusted net income⁽¹⁾ $ 51.1 $ 22.7 Less: Adjusted consolidated net income allocated to participating securities (0.8) (0.03) (0.5) (0.03) Effect of dilutive securities (0.01) — Adjusted net income attributable to common stock⁽¹⁾ $ 50.3 $ 2.19 $ 22.2 $ 1.23 Shares used for diluted computation (GAAP) (thousands) 22,852 17,995 Shares used for diluted computation (adjusted) (thousands) 22,975 18,027 Three Months Ended June 30, 2026 Three Months Ended June 30, 2025 Reconciliation of adjusted consolidated earnings per share and adjusted consolidated net income (millions except share and per share amounts)

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