8-K

UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington, 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): January 27, 2026

DELTA

AIR LINES, INC.

(Exact name of registrant as specified in its charter)

P.O. Box 20706, Atlanta, Georgia 30320-6001

(Address of principal executive offices)

Registrant’s telephone number, including area code: (404) 715-2600

Registrant’s Web site address: www.delta.com

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 (see General Instruction A.2. below):

☐ 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:

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

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. ☐

On January 27, 2026, Delta Air Lines, Inc. (“Delta”) entered into a definitive agreement with Airbus S.A.S. to purchase 16 Airbus A330-900 aircraft and 15 Airbus A350-900 aircraft, with an option to purchase up to an additional 20 widebody aircraft. Deliveries of the aircraft will begin in 2029. The A330-900 aircraft will be powered by the Trent 7000 engine and the A350-900 aircraft will utilize the Trent XWB-84 EP engine, both manufactured by Rolls-Royce. The aircraft order is within Delta’s previously announced capital expenditure and capacity targets. Delta has obtained long-term financing for a substantial portion of the purchase price of each aircraft.

Forward Looking Statements

Statements made in this Form 8-K that are not historical facts,including statements regarding our estimates, expectations, beliefs, intentions, projections, goals, aspirations, commitments or strategiesfor the future, should be considered “forward-looking statements” under the Securities Act of 1933 , as amended, the SecuritiesExchange Act of 1934 , as amended, and the Private Securities Litigation Reform Act of 1995. Such statements are not guarantees or promisedoutcomes and should not be construed as such. All forward-looking statements involve a number of risks and uncertainties that could causeactual results to differ materially from the estimates, expectations, beliefs, intentions, projections, goals, aspirations, commitmentsand strategies reflected in or suggested by the forward-looking statements. These risks and uncertainties include, but are not limitedto, the possible effects of serious accidents involving our aircraft or aircraft of our airline partners; breaches or lapses in the securityof technology systems we use and rely on, which could compromise the data stored within them, as well as failure to comply with evolvingglobal privacy and security regulatory obligations or adequately address increasing customer focus on privacy issues and data security;disruptions in our information technology infrastructure; our dependence on technology in our operations; increases in the cost of aircraftfuel; extended disruptions in the supply of aircraft fuel, including from Monroe Energy, LLC (“Monroe”), a wholly-owned subsidiaryof Delta that operates the Trainer refinery; failure to receive the expected results or returns from our commercial relationships withairlines in other parts of the world and the investments we have in certain of those airlines; the effects of a significant disruptionin the operations or performance of third parties on which we rely; failure to comply with the financial and other covenants in our financingagreements; labor-related disruptions; the effects on our business of seasonality and other factors beyond our control, such as changesin value in our equity investments, severe weather conditions, natural disasters or other environmental events, including from the impactof climate change; failure or inability of insurance to cover a significant liability at Monroe’s refinery; failure to comply withexisting and future environmental regulations to which Monroe’s refinery operations are subject, including costs related to compliancewith renewable fuel standard regulations; significant damage to our reputation and brand, including from exposure to significant adversepublicity or inability to achieve certain sustainability goals; our ability to retain senior management and other key employees, and tomaintain our company culture; disease outbreaks or other public health threats, and measures implemented to combat them; the effects ofterrorist attacks, geopolitical conflict or security events; competitive conditions in the airline industry; extended interruptions ordisruptions in service at major airports at which we operate or significant problems associated with types of aircraft or engines we operate;the effects of extensive regulatory and legal compliance requirements we are subject to; the impact of environmental regulation, includingbut not limited to regulation of hazardous substances, increased regulation to reduce emissions and other risks associated with climatechange, and the cost of compliance with more stringent environmental regulations; and unfavorable economic or political conditions inthe markets in which we operate or volatility in currency exchange rates.

Additional information concerning risks and uncertainties that couldcause differences between actual results and forward-looking statements is contained in our Securities and Exchange Commission (SEC) filings,including our Annual Report on Form 10-K for the fiscal year ended December 31, 2024 and other filings filed with the SEC from time totime. Caution should be taken not to place undue reliance on our forward-looking statements, which represent our views only as of thedate of this Form 8-K, and which we undertake no obligation to update except to the extent required by law.

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SIGNATURES

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

Date: January 27, 2026

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