Delta Air Lines Reports Record September Quarter 2025 Revenue, Exceeds Analyst EPS Estimates

Delta Air Lines (DAL.US) announced its financial results for the September quarter of 2025, with non-GAAP operating revenue reaching a record $15.2 billion, marking a 4.1% increase year-over-year. The company reported non-GAAP diluted earnings per share (EPS) of $1.71, surpassing the analyst estimate of $1.52. This strong performance positions Delta to deliver robust December quarter earnings and maintain momentum into 2026.

Revenue Environment and Outlook

Delta achieved record September quarter revenue, driven by the strength of its diverse, high-margin revenue streams and improving domestic fundamentals. Total adjusted unit revenue (TRASM) saw a 0.3% increase over the prior year, with sales trends accelerating across all geographies and advance purchase windows in the last six weeks of the quarter.

Premium, corporate, and loyalty segments were key contributors to this growth, with premium revenue up 9% and loyalty revenue increasing by 9% year-over-year. The company anticipates continued healthy sequential improvement in underlying revenue and unit revenue trends for the December quarter, projecting total revenue growth of 2% to 4% over last year’s record.

Cost Performance and Financial Position

The company maintained strong cost performance, with non-fuel unit cost growth remaining approximately flat compared to the prior year. Adjusted fuel expense decreased by 8% year-over-year to $2.6 billion, reflecting an 11% decrease in the adjusted fuel price per gallon.

Delta also demonstrated robust cash generation, paying down nearly $2 billion in debt year-to-date and achieving a gross leverage of 2.4x at quarter-end. The full-year free cash flow outlook of $3.5 billion to $4 billion aligns with long-term targets, enabling continued reinvestment in the business and shareholder returns.

Management Outlook

Management expressed confidence in Delta's competitive advantages and industry leadership, driven by strong execution and improving fundamentals. The outlook for the December quarter includes an operating margin of 10.5% to 12% and adjusted EPS ranging from $1.60 to $1.90.

For the full year 2025, Delta expects adjusted EPS of approximately $6, landing in the upper half of its July guidance. The company anticipates top-line growth, margin expansion, and earnings improvement consistent with its long-term financial framework in 2026.