Exhibit 99.1

Delta Air Lines Announces September Quarter 2023 Financial Results

Record September quarter revenue with earnings growth of over 30 percent year-over-year

Expect full year adjusted revenue growth of 20 percent over 2022 with a double-digit operating margin

Guiding full year adjusted EPS of $6.00 - $6.25 and free cash flow of $2 billion

Balance sheet progressing toward investment grade metrics with S&P rating upgraded to BB+

ATLANTA, October 12, 2023 – Delta Air Lines (NYSE: DAL) today reported financial results for the September quarter and provided its outlook for the December quarter 2023. Highlights of the September quarter, including both GAAP and adjusted metrics, are on page five and incorporated here.

“Thanks to the outstanding work of our entire team, Delta delivered record September quarter revenue and a double-digit operating margin. Our operational reliability continues to strengthen, thanks to our people, and I’m pleased to recognize their outstanding efforts with over $1 billion accrued year-to-date towards profit sharing,” said Ed Bastian, Delta's chief executive officer.

“Delta continues to set itself apart as a trusted consumer brand delivering welcoming, caring and elevated service by the best people in the industry. Our differentiated position supports our expectations for full year revenue growth of 20 percent over 2022, and pre-tax earnings of over $5 billion, a near doubling over prior year earnings.”

September Quarter 2023 GAAP Financial Results

September Quarter 2023 Adjusted Financial Results

December Quarter and Full Year Outlook¹

Additional metrics for financial modeling can be found in the Supplemental Information section under Quarterly Results on ir.delta.com.

Revenue Environment and Outlook

“We generated record September quarter revenue, with total revenues 13 percent higher than the September quarter of 2022. With this performance, we expect to deliver a record September quarter unit revenue premium to the industry, reflecting the strength of Delta’s diverse revenue streams and continued brand momentum,” said Glen Hauenstein, Delta’s president.

“Robust demand for travel on Delta is continuing into the December quarter where we expect total revenue growth of 9 percent to 12 percent compared to the December quarter 2022 with total unit revenue (TRASM) expected to decline 2.5 percent to 4.5 percent. Within this outlook, Domestic and Transatlantic trends are consistent with the September quarter on a year-over-year basis, while unit revenue trends in the Pacific and Latin America are expected to modestly decelerate given capacity growth related to China re-opening and investment in our LATAM JV.”

Cost Performance and Outlook

“For the December quarter, we expect non-fuel unit costs to be flat to 2% higher year-over-year as we realize the benefits of scale and efficiency while making investments in our people and operational reliability,” said Dan Janki, Delta’s chief financial officer. “Delivering operational excellence while driving efficiency remains a top priority.”

September Quarter 2023 Cost Performance

Balance Sheet, Cash and Liquidity

“Our financial foundation is continuing to strengthen as we've reduced our leverage to 3x in the September quarter from 5x at the end of last year.” Janki said. “We have repaid $3.7 billion of debt year-to-date and we expect to repay over $4 billion for the year. In recognition of our improving balance sheet, we received a rating upgrade from S&P in August to BB+ with a positive outlook.”

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

September Quarter Highlights

Operations, Network and Fleet

Culture and People

Customer Experience and Loyalty

Environmental, Social and Governance

¹Based on FlightStats preliminary data for Delta flights system wide and for Delta's competitive set (AA, UA, B6, AS, WN, and DL), from July 1 - September 30, 2023. On-time is defined as A0.

September Quarter Results

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

About Delta Air Lines  Through the warmth and service of the Delta Air Lines (NYSE: DAL) people and the power of innovation, Delta never stops looking for ways to make every trip feel tailored to every customer. 100,000 Delta people lead the way in delivering a world-class customer experience on over 4,000 daily flights to more than 280 destinations on six continents, connecting people to places and to each other.

Delta expects to serve nearly 200 million customers this year safely, reliably and with industry-leading customer service innovation – recognized as North America’s most on-time airline. We’re dedicated 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 respected across every point of their journey with us.

Headquartered in Atlanta, Delta operates significant hubs and key markets in Amsterdam, Atlanta, Boston, Detroit, London-Heathrow, Los Angeles, Mexico City, Minneapolis-St. Paul, New York-JFK and LaGuardia, Paris-Charles de Gaulle, Salt Lake City, 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 with Aeroméxico, 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.

Delta is America's most-awarded airline thanks to the dedication, passion and professionalism of its people. It has been recognized by Cirium for operational excellence, as the top U.S. airline by the Wall Street Journal, among Fast Company's most innovative companies, the World's Most Admired Airline according to Fortune, as one of Glassdoor's Best Places to Work, and a top employer for diversity, veterans and best workplaces for women by Forbes.

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 impact of incurring significant debt in response to the COVID-19 pandemic; failure to comply with the financial and other covenants in our financing agreements; the possible effects of accidents involving our aircraft or aircraft of our airline partners; breaches or lapses in the security of technology systems on which we rely, which could compromise the data stored within them, as well as failure to comply with ever-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; 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 realize the full value of intangible or long-lived assets; labor issues; the effects on our business of seasonality and other factors beyond our control, including severe weather conditions, natural disasters or other environmental events, including from the impact of climate change; changes 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; failure or inability of insurance to cover a significant liability at Monroe’s Trainer 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, such as the COVID-19 pandemic or similar 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 government regulation we are subject to; the impact of environmental regulation, including but not limited to 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 filings, including our Annual Report on Form 10-K for the fiscal year ended December 31, 2022. 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)

DELTA AIR LINES, INC.

Passenger Revenue

(Unaudited)

DELTA AIR LINES, INC.

Other Revenue

(Unaudited)

DELTA AIR LINES, INC.

Total Revenue

(Unaudited)

DELTA AIR LINES, INC.

Statistical Summary

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DELTA AIR LINES, INC.

Consolidated Statements of Cash Flows

(Unaudited)

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Consolidated Balance Sheets to the total of the same such amounts shown above:

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 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 and settlements on hedges. Mark-to-market (“MTM”) adjustments are defined as fair value changes recorded in periods other than the settlement period. Such 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.

MTM adjustments on investments. 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.

Restructuring charges. During 2020, we recorded restructuring charges for items such as fleet impairments and voluntary early retirement and separation programs following strategic business decisions in response to the COVID-19 pandemic. During 2022, we recognized adjustments to certain of those restructuring charges, representing changes in our estimates.

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

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

Operating Margin, adjusted

Operating Income, adjusted

Pre-Tax Margin, adjusted

Operating Cash Flow, adjusted. We present operating cash flow, adjusted because management believes adjusting for the following items provides 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.

Adjusted Net Debt. Delta uses adjusted total debt, including aircraft rent, in addition to adjusted debt and finance leases, to present estimated financial obligations. Delta reduces adjusted total debt by cash, cash equivalents, short-term investments 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.

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.

One-time pilot agreement expenses. In the March 2023 quarter, Delta pilots ratified a new four-year Pilot Working Agreement effective January 1, 2023. The agreement includes numerous work rule changes and pay rate increases during the four-year term, including an initial pay rate increase of 18%. The agreement also includes a provision for a one-time payment made upon ratification in the March 2023 quarter of $735 million. Additionally, we recorded adjustments to other benefit-related items of approximately $130 million. Adjusting for these expenses allows investors to better understand and analyze our core cost performance.

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 because management believes this metric is helpful to investors in assessing the company's overall debt profile. Adjusted debt includes LGA bonds and operating lease liabilities. We calculate EBITDAR by adding depreciation and amortization to GAAP operating income and adjusting for the fixed portion of operating lease expense.