# Who are Delta Air Lines's customers? Who does Delta Air Lines earn revenue from?
Canonical: https://valuechain.wiki/delta-air-lines · Facet: customers · Updated: 2026-09-11T23:11:31.287399+00:00 · Source: ValueChain.wiki (cited money-flow graph)

**Citable summary**: Delta Air Lines's confirmed revenue counterparties include American Express plus 1 undisclosed/aggregate relationship. Per the valuechain.wiki graph: 2 revenue edges, backed by 3 dated sources, 2 of them primary filings (as of 2026-09-11).

### 항공권 구매 고객 (high)
- metric: Amount $45.5B · FY2025 · Passenger ticket revenue recognized from ticket customers
- note: Tickets purchased by leisure and corporate travelers are Delta's largest revenue source. Premium demand outpaced the main cabin in 2025, when ticket revenue reached $45.488 billion.
- [confirms] SEC EDGAR (EN, filing, published 2026-02-11) https://www.sec.gov/Archives/edgar/data/27904/000002790426000013/dal-20251231.htm: "Ticket | $45,488"
- [confirms] Morningstar (EN, analysis, published 2025-10-23) https://www.morningstar.com/business/insights/blog/airline-industry-analysis: "Delta and United lead the pack in the US in terms of highest revenue yield."

### 아메리칸 익스프레스 (high)  → /american-express.md
- metric: Amount $8.2B · FY2025 · Remuneration from the American Express SkyMiles partnership
- note: American Express is Delta's most important SkyMiles purchaser. Remuneration from the co-brand card and Membership Rewards relationship totaled $8.2 billion in 2025.
- [confirms] SEC EDGAR (EN, filing, published 2026-02-11) https://www.sec.gov/Archives/edgar/data/27904/000002790426000013/dal-20251231.htm: "Remuneration from American Express was $8.2 billion during 2025."
- [confirms] SEC EDGAR (EN, filing, published 2026-02-06) https://www.sec.gov/Archives/edgar/data/4962/000000496226000080/axp-20251231.htm: "Delta is our largest strategic partner."

Reverse side: https://valuechain.wiki/delta-air-lines/suppliers.md · Ripple: https://valuechain.wiki/delta-air-lines/ripple.md

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