Allegiant Travel reports Q3 2026 results

Item 2.02 Results of Operations and Financial Condition.

On November 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 September 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.¹ 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 3Q26 Earnings Call Slides furnished as Exhibit 99.2 that are not historical facts are forward-looking statements.¹ 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 the combined company; 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 November 4, 2026

99.2

3Q 26 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: November 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 November 4, 2026

99.2

3 Q26 Earnings Call Slides

ALLEGIANT TRAVEL COMPANY THIRD QUARTER 2026 FINANCIAL RESULTS*

Third quarter 2026 GAAP loss per share of $(0.56)²

Third quarter 2026 adjusted diluted loss per share of $(0.03) (1)(2)(3)³

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

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

"Allegiant delivered another quarter of operating profitability, expanding our adjusted operating margin by 340 basis points year over year on a pro forma basis in our seasonally slowest quarter, despite a more than 55 percent surge in fuel costs per gallon," stated Greg Anderson, chief executive officer of Allegiant Travel Company. "These results underscore robust demand from our customer base as well as continued momentum in our commercial initiatives that drove a 28.3 percent year-over-year increase in TRASM, on a pro forma basis. They also demonstrate our flexible business model in action as we reduced pro forma capacity by nearly six percent year over year to protect margins in a high-fuel environment.

"I am particularly pleased with the momentum across our commercial initiatives, highlighted by co-brand remuneration growth of more than 23 percent, pricing and product enhancements that lifted ancillary revenue per passenger, and our new Expedia partnership that is introducing new customers into our ecosystem. Continued execution, combined with our expanding scale, creates multiple pathways to realize the underlying earnings power of the company.

"Looking ahead to the fourth quarter, 72 percent of our ASMs are scheduled on high-demand peak days, and fuel-efficient MAX aircraft are expected to account for 20 percent of our combined capacity. With strong booking momentum, we remain confident in our 2026 full-year adjusted earnings per share guidance of greater than $6.00, despite elevated fuel costs.

"I want to thank our dedicated teams for their exceptional execution and continued integration progress. Together, we are building the nation's leading leisure carrier, and we look forward to sharing our integration milestones and long-term financial framework at our Investor Day on December 7."

1

Summary Results

Consolidated (4)

Three Months Ended September 30, Percent Change (unaudited) (in millions, except per share amounts) 2026 (4)

2025 YoY

Sunseeker special charges, net (2)

— 0.6 NM

Airline special charges (2)

Consolidated (4)

Nine Months Ended September 30, Percent Change (unaudited) (in millions, except per share amounts) 2026 (4)

2025 YoY

Income (loss) before income taxes 40.8 (98.8) NM

Net income (loss) 22.4¹⁰ (76.6) NM

Diluted earnings (loss) per share 0.97 (4.26) NM

Sunseeker special charges, net (2)

— 100.9 NM

Airline special charges (2)

(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) In 2026 and 2025, the Company incurred gains and losses on debt extinguishment related to prepayment of debt facilities. These are added back or subtracted out, 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. 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.

NM Not meaningful (in some cases, due to the lack of comparability as a result of Sun Country results only being reflected in 2026)

* Note that amounts may not