Delta Posts Record September-Quarter Revenue as Fuel Bill Climbs 62 Percent

On the adjusted (non-GAAP) basis that Delta uses to compare itself with the rest of the industry, operating revenue was $17.6 billion, up 16 percent. Operating income was $1.7 billion with a 9.4 percent margin. Pre-tax income was $1.5 billion with an 8.5 percent margin, and earnings per share were $1.72.

The year-earlier comparisons show the squeeze. Adjusted operating margin was 11.1 percent in the September quarter of 2025 and adjusted pre-tax margin was 9.7 percent. GAAP diluted earnings per share fell 47 percent from $2.17 to $1.15, and GAAP net income fell from $1.417 billion to $756 million.

Chief executive Ed Bastian said pre-tax profit of $1.5 billion matched last year's performance. He said Delta had generated $1.9 billion of free cash flow year to date and that demand remains strong.

Why GAAP revenue is $2.6 billion higher than adjusted revenue

The release reconciles the two revenue figures in a single line. GAAP operating revenue of $20,186 million is reduced by $2,601 million of third-party refinery sales to reach adjusted revenue of $17,585 million.

Delta explains the adjustment this way: sales of refined products to outside buyers, and the related expenses, are not related to its airline segment, so excluding them gives a more meaningful comparison of its airline operations with the rest of the industry. The refinery is the Trainer refinery operated by Delta's wholly owned subsidiary Monroe Energy. In the GAAP income statement, refinery revenue appears within "Other" revenue and the matching cost appears as refinery expense of $2.6 billion.

The same adjustment flows through unit revenue. GAAP total revenue per available seat mile (TRASM) was 25.46 cents, up 21 percent, while adjusted TRASM was 22.18 cents, up 15 percent. Delta's pre-tax and operating margin reconciliations also add back the refinery sales, at 1.1 and 1.2 percentage points respectively.

Two further adjustments, of $218 million on investments and $208 million on hedges, bridge GAAP pre-tax income to the non-GAAP figure.

Demand and unit revenue

Capacity, measured in available seat miles, was essentially flat at 79.3 billion. Passenger load factor was 86 percent, unchanged from a year earlier. Passenger mile yield rose 14 percent to 22.80 cents.

Passenger revenue rose 15 percent to $15.5 billion. Delta said adjusted unit revenue grew 15 percent, an acceleration of three points from the prior quarter. Main cabin unit revenue grew 17 percent on seats down by low single digits.

By region, the release gives these unit revenue changes against the same quarter of 2025:

• Domestic: up 16 percent, on a load factor one point higher than last year. Domestic revenue was $10.6 billion.
• Atlantic: up 11 percent, with transatlantic unit revenue growth improving four points from the prior quarter. Revenue was $3.3 billion.
• Latin America: up 22 percent on capacity down 6 percent. Revenue was $867 million.
• Pacific: unit revenue up 5 percent in the revenue table, on capacity up 8 percent. Revenue was $756 million, up 13 percent.

Delta's narrative text also describes total international unit revenue as up 12 percent, led by Latin America, and says transpacific revenue grew 13 percent on 8 percent more capacity, supported by new routes to Asia.

Premium, loyalty, cargo and maintenance

Delta said diverse revenue streams, meaning premium products and everything other than main cabin tickets, accounted for 61 percent of adjusted revenue. The release's reconciliation shows $10.8 billion of adjusted revenue outside the main cabin.

• Premium: Premium ticket revenue rose 18 percent to $6.8 billion, on a 6 percent increase in seats. Main cabin ticket revenue was $6.8 billion, up 12 percent.
• Loyalty: Total loyalty revenue grew 18 percent. Co-brand card acquisitions and spend both grew by double digits, the eighth consecutive quarter of double-digit growth in cardholder spend. American Express remuneration rose 15 percent, and Delta said it is positioned to exceed $9 billion for the full year. Travel products and non-air partnership revenue rose 25 percent.
• Cargo: Revenue rose 29 percent to $301 million, with roughly equal contributions from volume and yield.
• Maintenance (MRO): Revenue rose 28 percent to $296 million, bringing year-to-date MRO revenue to $990 million.
• Corporate: Corporate sales grew by double digits in every sector, led by banking, technology and energy.

Fuel and costs

Fuel was the main drag. GAAP fuel expense was $4.35 billion, up 69 percent, at an average of $3.80 a gallon. Adjusted fuel expense was $4.1 billion, up 62 percent, at an adjusted $3.61 a gallon, up 60 percent from $2.25. The adjusted price includes a refinery benefit of 13 cents a gallon.

Chief financial officer Erik Snell said Delta absorbed more than $500 million of higher fuel costs compared with its guidance in early July and still delivered earnings in line with last year.

Adjusted non-fuel costs were $11.1 billion. Non-fuel unit cost (CASM-Ex) was 14.03 cents, up 7.3 percent. Delta attributed the rise mainly to higher crew and revenue-related costs on capacity growth that came in several points below its original plan, including nearly one point from summer storms. GAAP operating expense was $18.7 billion.

For the December quarter, Snell said non-fuel unit cost growth should improve by one to two points from the September quarter, with slightly higher capacity and continued efficiencies. For 2027, Delta said it remains on track for low single-digit unit cost growth.

Balance sheet and cash

Free cash flow was $463 million, down from $833 million a year earlier, on adjusted operating cash flow of $1.7 billion and gross capital expenditures of $1.4 billion. Year-to-date free cash flow was $1.9 billion.

Adjusted net debt was $13.4 billion at the end of September, $950 million lower than at the end of 2025 and down from $15.6 billion a year earlier. Liquidity was $6.9 billion, including $3.1 billion of undrawn revolving credit capacity, and the air traffic liability stood at $9.6 billion.

Delta plans to pay down more than $2 billion of debt in 2026 and expects to end the year with gross leverage (adjusted debt to EBITDAR) of about 2.2 times. Its longer-term framework targets mid-teens margins and returns and gross leverage of about one times.

December-quarter and full-year guidance

Delta's guidance assumes fuel at the forward curve as of 2 October 2026 and includes a refinery benefit of about 40 cents a gallon, producing a projected all-in fuel price of about $4.25 a gallon.

Chief commercial officer Joe Esposito said revenue momentum continued into the December quarter across all products and geographies, with seats growing less than 2 percent and a reduction in main cabin seats. Delta expects another quarter of sequential improvement in unit revenue in both domestic and international markets.

Bastian said Delta expects a full-year pre-tax profit of roughly $4.5 billion while absorbing a $6 billion increase in fuel costs. Snell said the December-quarter range puts earnings consistent with last year at the upper end.

How the guidance compares with July

Independent coverage places the new outlook against the one Delta gave three months earlier. Airways Magazine reported that the full-year earnings range of $5.10 to $5.60 compares with the $6.50 to $7.50 range Delta reaffirmed in July, and calculated the midpoint falling to $5.35 from $7.00. The same report quoted Snell attributing the reduction to fuel, saying "All of it's fuel." It also reported that Delta's Philadelphia refinery is expected to contribute about $700 million of profit this year.

Its account matches Delta's release on revenue, margins, earnings per share, fuel expense and the $4.25 December-quarter fuel assumption. This article did not independently verify analyst consensus estimates or the share-price reaction on 9 October, and does not report them.

Network, fleet and operations

Delta said it led its six-carrier competitive set in on-time arrivals and departures for the quarter, per preliminary FlightStats data, and set a September-quarter record for domestic mishandled-baggage rate.

The airline took delivery of 13 aircraft in the quarter, including Airbus A350-900, A321neo and A220-300 types. It announced new international service starting in 2027 from Seattle to Tokyo-Narita, Los Angeles to Manila, Austin to Paris-Charles de Gaulle, Detroit to Athens and Boston to Venice, and extended seasonal service on selected transatlantic routes. Delta also announced its largest-ever Los Angeles schedule, with new and increased service to several U.S. destinations.

Delta also listed a strategic relationship with Hyatt for the SkyMiles ecosystem, a completed rollout of its Delta Concierge AI assistant to all SkyMiles members, and a new Chief Data Officer, Ramnik Bajaj.

Sources

• Delta Air Lines, "Delta Air Lines Announces September Quarter 2026 Financial Results," press release, 9 October 2026 (news.delta.com)
• Airways Magazine, "Delta Cuts 2026 Profit Outlook as Fuel Costs Surge Despite Record September Revenue" (airwaysmag.com)