Exhibit 99.1

Delta Air Lines Announces March Quarter 2025 Financial Results

Solid March quarter revenue and strong cost performance drove profitability in line with last year

Guiding to June quarter operating margin of 11 percent to 14 percent and EPS of $1.70 to $2.30

Reducing planned capacity growth in the second half to flat year on year, aligning supply with demand

ATLANTA, April 9, 2025 – Delta Air Lines (NYSE: DAL) today reported financial results for the March quarter and provided its outlook for the June quarter. Highlights of the March quarter, including both GAAP and adjusted metrics, are on page five and incorporated here.

“While the first quarter unfolded differently than initially expected, we delivered solid profitability that was flat to prior year and is expected to lead the industry. I would like to thank our people for their outstanding performance and hard work during the quarter,” said Ed Bastian, Delta’s chief executive officer.

“With broad economic uncertainty around global trade, growth has largely stalled. In this slower-growth environment, we are protecting margins and cash flow by focusing on what we can control. This includes reducing planned capacity growth in the second half of the year to flat over last year while actively managing costs and capital expenditures.”

“We expect June quarter profitability of $1.5 to $2 billion. Given the lack of economic clarity, it is premature at this time to provide an updated full-year outlook. Given our position of strength, our bias toward action and the decline in fuel prices, Delta remains well positioned to deliver solid profitability and free cash flow for the year. I expect that our financial results will continue to lead the industry and validate our strategy to create differentiation and greater financial durability.”

March Quarter 2025 GAAP Financial Results

March Quarter 2025 Non-GAAP Financial Results

Financial Guidance1

Given current uncertainty, Delta is not reaffirming full year 2025 financial guidance and will provide an update later in the year as visibility improves.

Revenue Environment and Outlook

“Delta delivered revenue of $13 billion, 3.3 percent higher than last year, consistent with revised guidance. Through the quarter, diverse, high-margin revenue streams showed resilience, improving over prior year and approaching 60 percent of total revenue,” said Glen Hauenstein, Delta's president.

“Based on current trends, we expect June quarter total revenue to be down 2 percent to up 2 percent over prior year, with continued resilience in premium, loyalty and international partially offsetting Domestic and main cabin softness. 2025 is playing out differently than we expected at the start of the year. As a result, we are adapting to current conditions while staying true to our long-term strategy.”

*Corporate travel sales represent the revenue from tickets sold to corporate contracted customers, including tickets for travel during and beyond the referenced time period

Cost Performance and Outlook

“Our teams ran a strong operation despite challenging weather at the start of the year, enabling us to drive efficiency and deliver non-fuel unit cost growth of up 2.6 percent over prior year. This was better than our initial expectation and a sequential improvement from the end of 2024,” said Dan Janki, Delta’s chief financial officer. “As we reduce capacity growth, we are taking incremental action to manage costs. We expect non-fuel unit cost growth consistent with our long-term target of up low-single digits in the second quarter and through the rest of the year.”

March Quarter 2025 Cost Performance

Balance Sheet, Cash and Liquidity

“Delta’s decade-plus commitment to our consistent strategy, investment and execution has created a differentiated and durable business that positions us to navigate periods of uncertainty,” Janki said. “We ended the first quarter with gross leverage of 2.6x and expect to repay at least $3 billion of debt this year as we continue to strengthen our investment grade balance sheet. During the quarter, we achieved our highest credit rating in decades following an upgrade from Moody's, reflecting our continued focus on debt reduction as we progress towards our long-term gross leverage target of 1x."

*Includes cash and cash equivalents, short-term investments and undrawn revolving credit facilities

March Quarter 2025 Highlights

Operations, Network and Fleet

Culture and People

Customer Experience and Loyalty

Environmental Sustainability

1FlightStats preliminary data for Delta flights system wide, Delta's competitive set (AA, UA, B6, AS, WN, and DL) and Delta's network peers (AA, UA, and DL) from Jan 1 - Mar 31, 2025. On-time is defined as A0

March Quarter 2025 Results

March quarter results have been adjusted primarily for third-party refinery sales and gains/losses on investments as described in the reconciliations in Note A.

About Delta Air Lines Through exceptional service and the power of innovation, Delta Air Lines (NYSE: DAL) never stops looking for ways to make every trip feel tailored to every customer.

There are 100,000 Delta people leading the way to deliver a world-class customer experience on up to 5,000 peak day Delta and Delta Connection flights to more than 290 destinations on six continents, connecting people to places and to each other. 

Delta served more than 200 million customers in 2024 — safely, reliably and with industry-leading customer service innovation — and was recognized by J.D. Power this year for being No. 1 in First/Business and Premium Economy Passenger Satisfaction. The airline also was recognized as the top U.S. airline by the Wall Street Journal and as North America’s most on-time airline in 2024 and our people earned the Platinum Award for Operational Excellence from Cirium.

We remain committed to ensuring that the future of travel is connected, personalized and enjoyable. Our people’s genuine and enduring motivation is to make every customer feel welcomed and cared for across every point of their journey with us.

Headquartered in Atlanta, Delta operates significant hubs and key markets in Amsterdam, Atlanta, Bogota, Boston, Detroit, Lima, London-Heathrow, Los Angeles, Mexico City, Minneapolis-St. Paul, New York-JFK and LaGuardia, Paris-Charles de Gaulle, Salt Lake City, Santiago (Chile), Sao Paulo, Seattle, Seoul-Incheon and Tokyo.

As the leading global airline, Delta's mission to connect the world creates opportunities, fosters understanding and expands horizons by connecting people and communities to each other and to their own potential.

Powered by innovative and strategic partnerships throughout the world with Aeromexico, Air France-KLM, China Eastern, Korean Air, LATAM, Virgin Atlantic and WestJet, Delta brings more choice and competition to customers worldwide. Delta’s premium product line is elevated by its unique partnership with Wheels Up Experience.

In addition to the awards from J.D. Power and Cirium, Delta has been recognized among Fast Company’s Most Innovative Companies; the World’s Most Admired Airline and one of the Best 100 Companies to Work For according to Fortune; one of Glassdoor’s Best Places to Work; the top carrier for business travelers by Business Travel News; and topped 5 categories, including the Best U.S. Airline award, in Forbes Travel Guide’s Verified Air Travel Awards. In addition, Delta has been named to the Civic 50 by Points of Light for the past seven years as one of the most community minded companies in the U.S.

Forward Looking Statements

Statements made in this press release that are not historical facts, including statements regarding our estimates, expectations, beliefs, intentions, projections, goals, aspirations, commitments or strategies for the future, should be considered “forward-looking statements” under the Securities Act of 1933, as amended, the Securities Exchange Act of 1934, as amended, and the Private Securities Litigation Reform Act of 1995. Such statements are not guarantees or promised outcomes and should not be construed as such. All forward-looking statements involve a number of risks and uncertainties that could cause actual results to differ materially from the estimates, expectations, beliefs, intentions, projections, goals, aspirations, commitments and strategies reflected in or suggested by the forward-looking statements. These risks and uncertainties include, but are not limited to, the possible effects of serious accidents involving our aircraft or aircraft of our airline partners; breaches or lapses in the security of technology systems we use and rely on, which could compromise the data stored within them, as well as failure to comply with evolving global 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 aircraft fuel; extended disruptions in the supply of aircraft fuel, including from Monroe Energy, LLC (“Monroe”), a wholly-owned subsidiary of Delta that operates the Trainer refinery; failure to receive the expected results or returns from our commercial relationships with airlines in other parts of the world and the investments we have in certain of those airlines; the effects of a significant disruption in the operations or performance of third parties on which we rely; failure to comply with the financial and other covenants in our financing agreements; labor-related disruptions; the effects on our business of seasonality and other factors beyond our control, such as changes in value in our equity investments, severe weather conditions, natural disasters or other environmental events, including from the impact of climate change; failure or inability of insurance to cover a significant liability at Monroe’s refinery; failure to comply with existing and future environmental regulations to which Monroe’s refinery operations are subject, including costs related to compliance with renewable fuel standard regulations; significant damage to our reputation and brand, including from exposure to significant adverse publicity or inability to achieve certain sustainability goals; our ability to retain senior management and other key employees, and to maintain our company culture; disease outbreaks or other public health threats, and measures implemented to combat them; the effects of terrorist attacks, geopolitical conflict or security events; competitive conditions in the airline industry; extended interruptions or disruptions 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, including but not limited to regulation of hazardous substances, increased regulation to reduce emissions and other risks associated with climate change, and the cost of compliance with more stringent environmental regulations; and unfavorable economic or political conditions in the markets in which we operate or volatility in currency exchange rates.

Additional information concerning risks and uncertainties that could cause 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 to time. Caution should be taken not to place undue reliance on our forward-looking statements, which represent our views only as of the date of this press release, and which we undertake no obligation to update except to the extent required by law.

DELTA AIR LINES, INC.

Consolidated Statements of Operations

(Unaudited)

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Passenger Revenue

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Other Revenue

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DELTA AIR LINES, INC.

Total Revenue

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DELTA AIR LINES, INC.

Statistical Summary

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Consolidated Statements of Cash Flows

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DELTA AIR LINES, INC.

Consolidated Balance Sheets

(Unaudited)

Note A: The following tables show reconciliations of non-GAAP financial measures. The reasons Delta uses these measures are described below. Reconciliations may not calculate exactly due to rounding.

Delta sometimes uses information ("non-GAAP financial measures") that is derived from the Consolidated Financial Statements, but that is not presented in accordance with accounting principles generally accepted in the U.S. (“GAAP”). Under the Securities and Exchange Commission rules, non-GAAP financial measures may be considered in addition to results prepared in accordance with GAAP, but should not be considered a substitute for or superior to GAAP results. The tables below show reconciliations of non-GAAP financial measures used in this release to the most directly comparable GAAP financial measures.

Forward Looking Projections. Delta is not able to reconcile forward looking non-GAAP financial measures without unreasonable effort because the adjusting items such as those used in the reconciliations below will not be known until the end of the period and could be significant.

Adjustments. These reconciliations include certain adjustments to GAAP measures that are made to provide comparability between the reported periods, if applicable, and for the reasons indicated below:

Third-party refinery sales. Refinery sales to third parties, and related expenses, are not related to our airline segment. Excluding these sales therefore provides a more meaningful comparison of our airline operations to the rest of the airline industry.

MTM adjustments on investments. Mark-to-market ("MTM") adjustments are defined as fair value changes recorded in periods other than the settlement period. Unrealized gains/losses result from our equity investments that are accounted for at fair value in non-operating expense. The gains/losses are driven by changes in stock prices, foreign currency fluctuations and other valuation techniques for investments in certain companies, particularly those without publicly-traded shares. Adjusting for these gains/losses allows investors to better understand and analyze our core operational performance in the periods shown.

MTM adjustments and settlements on hedges. MTM fair value changes are not necessarily indicative of the actual settlement value of the underlying hedge in the contract settlement period, and therefore we remove this impact to allow investors to better understand and analyze our core performance. Settlements represent cash received or paid on hedge contracts settled during the applicable period.

Loss on extinguishment of debt. This adjustment relates to early termination of a portion of our debt. Adjusting for these losses allows investors to better understand and analyze our core operational performance in the periods shown.

Operating Revenue, adjusted and Total Revenue Per Available Seat Mile ("TRASM"), adjusted

Operating Income, adjusted

Operating Margin, adjusted

Pre-Tax Income, Net Income, and Diluted Earnings per Share, adjusted

Pre-Tax Margin, adjusted

Operating Cash Flow, adjusted. We present operating cash flow, adjusted because management believes adjusting for the following items provide a more meaningful measure for investors:

Net cash flows related to certain airport construction projects and other. Cash flows related to certain airport construction projects are included in our GAAP operating activities. We have adjusted for these items, which were primarily funded by cash restricted for airport construction, to provide investors a better understanding of the company's operating cash flow that is core to our operations in the periods shown.

Operating revenue, adjusted related to premium products and diverse revenue streams

Adjusted Non-Fuel Cost and Non-Fuel Unit Cost or Cost per Available Seat Mile, ("CASM-Ex")

We adjust operating expense and CASM for certain items described above, as well as the following items and reasons described below:

Aircraft fuel and related taxes. The volatility in fuel prices impacts the comparability of year-over-year financial performance. The adjustment for aircraft fuel and related taxes allows investors to better understand and analyze our non-fuel costs and year-over-year financial performance.

Profit sharing. We adjust for profit sharing because this adjustment allows investors to better understand and analyze our recurring cost performance and provides a more meaningful comparison of our core operating costs to the airline industry.

Operating Expense, adjusted

Total fuel expense, adjusted and Average fuel price per gallon, adjusted

Adjusted Debt to Earnings Before Interest, Taxes, Depreciation, Amortization and Rent ("EBITDAR"). We present adjusted debt to EBITDAR ("gross leverage") because management believes this metric is helpful to investors in assessing the company's overall debt profile. Adjusted debt includes total operating lease liabilities (including fleet, ground and other) and sale-leaseback financing liabilities. We calculate EBITDAR by adding depreciation and amortization to operating income, adjusted and adjusting for the fixed portion of operating lease expense.

Adjusted Net Debt. We use adjusted gross debt, including fleet operating lease liabilities (comprised of aircraft and engine leases and regional aircraft leases embedded within our capacity purchase agreements) and unfunded pension liabilities (if applicable), in addition to adjusted debt and finance leases, to present estimated financial obligations. We reduce adjusted total debt by cash, cash equivalents, and LGA restricted cash, resulting in adjusted net debt, to present the amount of assets needed to satisfy the debt. Management believes this metric is helpful to investors in assessing the company's overall debt profile.

Gross Capital Expenditures. We adjust capital expenditures for the following items to determine gross capital expenditures for the reasons described below:

Net cash flows related to certain airport construction projects. Cash flows related to certain airport construction projects are included in capital expenditures. We adjust for these items because management believes investors should be informed that a portion of these capital expenditures from airport construction projects are either funded with restricted cash specific to these projects or reimbursed by a third party.

Free Cash Flow. We present free cash flow because management believes this metric is helpful to investors to evaluate the company's ability to generate cash that is available for use for debt service or general corporate initiatives. Free cash flow is also used internally as a component of our incentive compensation programs. Free cash flow is defined as net cash from operating activities and net cash from investing activities, adjusted for (i) pension plan contributions, (ii) net cash flows related to certain airport construction projects and (iii) net redemptions of short-term investments. These adjustments are made for the following reasons:

Pension plan contributions. Cash flows related to pension funding are included in our GAAP operating activities. We adjust to exclude these contributions to allow investors to understand the cash flows related to our core operations.

Net cash flows related to certain airport construction projects and other. Cash flows related to certain airport construction projects are included in our GAAP operating activities and capital expenditures. We have adjusted for these items, which were primarily funded by cash restricted for airport construction, to provide investors a better understanding of the company's free cash flow and capital expenditures that are core to our operations in the periods shown.

Net redemptions of short-term investments. Net redemptions of short-term investments represent the net purchase and sale activity of investments and marketable securities in the period, including gains and losses. We adjust for this activity to provide investors a better understanding of the company's free cash flow generated by our operations.