The others don't report the full number
United, Southwest, Alaska and JetBlue all have co-branded cards with banks but don't disclose the total cash those banks pay. United reported $3.2 billion of partner revenue in 2025 for marketing and other benefits, a figure that leaves out the miles themselves, so it can't be compared with Delta's or American's totals. Alaska said its loyalty program, card spending included, brought in $2.28 billion, about 16% of its revenue.
The card checks are getting bigger
Delta said on Oct. 9 that its American Express payments grew 15% in the third quarter of 2026 and that the full-year total is on track to exceed $9 billion. Citi became the sole issuer of American's AAdvantage cards in January 2026, and American has said it expects card and partner cash to grow about 10% a year until it approaches $10 billion a year.
What the data can't tell us
Card cash and operating income are different measures, and comparing them shows how much the card deals are worth relative to the rest of the business, not what each airline would earn without them, since the banks also pay for seats and services the airline has to provide. The figures are each company's own annual reports, and Alaska's 2025 results include Hawaiian Airlines for the full year after the two merged in 2024. Spirit Airlines has not filed a 2025 annual report and isn't included.
How we counted: 2025 revenue, operating income and pre-tax income from each airline's annual report (Form 10-K) as filed with the SEC, using GAAP figures. Card cash: American, "cash payments from co-branded credit card and other partners," 10-K; Delta, "American Express remuneration," fourth-quarter 2025 earnings release. Unredeemed miles: current plus noncurrent loyalty program liability or deferred revenue on each balance sheet at Dec. 31, 2025. Operating margin = operating income divided by total operating revenue. Operating costs = total operating expenses; salaries and benefits and fuel are the line items each airline reports (Delta's fuel line includes fuel taxes). Sources: American Airlines 10-K; Delta full-year 2025 results; Delta September quarter 2026 results; American Airlines 8-K on the Citi agreement, Dec. 5, 2024; SEC EDGAR filings for each airline; Reuters via Investing.com, March 13, 2026. Download the data.