Southwest Airlines Q3 2026 Earnings: Record Revenue Drives Margin Expansion

Southwest Airlines (NYSE: LUV) reported Q3 2026 operating revenue of $8.42 billion, up 21.2% from $6.95 billion a year earlier, while GAAP diluted EPS rose to $0.55 from $0.10. Record unit revenue and higher passenger yields outweighed an $821 million increase in fuel expense, lifting GAAP operating margin to 4.5%, while operating cash flow improved to $513 million.

Core Earnings Data

Revenue grew faster than costs during the quarter: operating revenue increased 21.2%, compared with a 16.3% rise in total operating expenses. As a result, GAAP operating income increased by $344 million to $379 million.

Southwest recorded $30 million of asset impairment charges, $13 million of litigation accruals, and $30 million of severance-related costs. Excluding special items, operating income was $452 million, adjusted net income was $328 million, and adjusted diluted EPS was $0.66.

Operating and Revenue Drivers

Passenger revenue was the primary source of growth, rising 22.8% to $7.75 billion. Freight revenue increased 14.3% to $48 million, while other revenue grew 4.5% to $621 million.

The revenue increase was driven by pricing and unit revenue rather than additional capacity or passenger volume. Capacity fell 0.4%, revenue passenger miles declined 0.4%, and load factor remained unchanged at 79.8%. Revenue passengers carried decreased 3.2%.

At the same time, the average passenger fare increased 26.9% to $231.69, passenger yield rose 23.3%, and revenue per available seat mile, or RASM, increased 21.6% to an all-time company record of 18.55 cents. Southwest said the results reflected demand for its enhanced product and the comparison with the prior-year introduction of bag fees and other commercial initiatives.

Managed business revenue also reached a third-quarter record. The company said 20 of its 50 highest managed-business booking days occurred during the quarter.

Record Unit Revenue Outran an $821 Million Fuel Headwind

Southwest generated $1.47 billion more revenue than in the prior-year quarter, but approximately 56% of that increase was absorbed by the $821 million rise in fuel expense. Fuel expense reached $2.15 billion, while fuel cost per gallon increased 63.3% to $3.92 from $2.40 and exceeded the company’s previous assumption of $3.70 to $3.75.

The company estimated that higher fuel costs reduced adjusted EPS by $1.08. Even so, total operating expenses grew more slowly than revenue, allowing both GAAP and adjusted margins to expand. Nonfuel unit costs excluding special items and profit sharing, or CASM-X, increased 3.8%, a much smaller increase than RASM.

Other cost pressures included a 10.0% increase in salaries, wages, and benefits and a 13.7% increase in landing fees and airport rentals. The quarter also included $214 million of gains from aircraft and engine sales and sale-leaseback transactions. These gains were not among the special items excluded from adjusted results, making them relevant when evaluating the repeatability of operating profit.

Cash Flow and Balance Sheet

Operating cash flow increased to $513 million from $287 million. The improvement was partly supported by a $92 million quarterly increase in air traffic liabilities, compared with a $172 million reduction in the prior-year period.

Gross capital expenditures were $1.01 billion, meaning operating cash flow did not cover gross capital spending before asset-sale proceeds. Southwest received $285 million from property and equipment sales and $212 million from sale-leaseback transactions, leaving net cash used in investing activities at $509 million.

Southwest ended the quarter with $3.62 billion in cash and cash equivalents and $5.6 billion of total liquidity, including a $2.0 billion revolving credit facility. Total debt including finance leases was $5.89 billion, and non-GAAP gross leverage was 1.9 times adjusted EBITDAR.

The company distributed $176 million in dividends during Q3 but did not repurchase shares during the quarter. It repurchased $1.25 billion of stock during the first nine months of 2026, with $450 million remaining under its authorization.

Guidance

Southwest’s outlook assumes that the current fare environment and demand trends remain broadly intact. The company lowered expected full-year capacity growth to approximately 1.2% from 1.5%, while its Q4 guidance points to continued unit-revenue growth alongside higher fuel and nonfuel costs.

Adjusted EPS and CASM-X are non-GAAP measures. Southwest did not provide GAAP reconciliations for these forecasts because it cannot reliably estimate future special items and certain fuel-related expenses.

Management Commentary

CEO Bob Jordan said demand remained robust entering the fourth quarter and that Southwest had completed its transformation phase. Management’s focus has shifted toward optimizing the business and introducing additional customer-experience, product, and loyalty enhancements.

During the quarter, Southwest announced changes to its Rapid Rewards program and plans for its first airport lounge network, with the first guests expected in 2027. The company plans to present its multi-year financial framework and targets at its Capital Markets Day on March 2, 2027.

Risks Investors Should Watch

• Fuel costs remain a major earnings variable. Southwest assumes approximately $4.55 per gallon in Q4, about 16% above the Q3 level. Further increases would require continued revenue strength to protect margins.
• Revenue growth relies heavily on pricing and unit revenue. Passenger counts and traffic declined during Q3 even as fares and yields increased sharply. The Q4 outlook assumes current fare and demand conditions remain broadly intact.
• Nonfuel unit costs are still rising. Q4 CASM-X is expected to increase 4.0% to 4.5%, including a one-percentage-point effect from reducing seat density on Boeing 737-700 aircraft.
• Fleet investment remains capital intensive. Southwest expects 67 aircraft deliveries and approximately 60 retirements in 2026, alongside $2.5 billion to $2.75 billion of net capital spending.
• Asset-sale gains affected quarterly profitability. The $214 million gain from aircraft, engine, and sale-leaseback transactions should be separated from recurring operating trends when comparing future results.

Conclusion

Southwest’s Q3 2026 earnings improvement was driven by record unit revenue and higher passenger pricing rather than capacity or traffic growth. That revenue strength more than offset a substantial fuel-cost increase and expanded margins, while operating cash flow also improved. The next key measures are whether Q4 RASM can remain elevated, how the company absorbs its higher fuel assumption and CASM-X growth, and whether capital spending continues to outpace internally generated cash flow.