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Sankey diagram of Delta Air Lines, Inc.. A complete text table follows the diagram.
Premium fares supplied almost all ticket growth, American Express economics widened the ecosystem, and fuel plus labor absorbed the gain
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The diagram stops at operating income so the negative pretax result does not require invalid negative Sankey flows. Loyalty is shown as one ecosystem by combining award-travel revenue within Passenger with loyalty-and-related revenue within Other. Refinery and MRO are retained because they explain why consolidated revenue growth did not translate into operating-margin expansion.
Labels and narrative explain the filing. A category marked “arithmetic bridge” or “residual” is calculated from reported totals, rather than a separately reported line.
| Category | Stage | Value | Notes |
|---|---|---|---|
| Main cabin tickets | 1 | $5.4B | Traditional fare base; +1% |
| Premium tickets | 1 | $5.4B | Higher-value cabins; +14% |
| Loyalty award travel | 1 | $1.0B | Miles redeemed into seats; +9% |
| Loyalty & partner economics | 1 | $1.2B | Primarily American Express remuneration; +13% |
| Travel services & cargo | 1 | $732M | Fees, vacation products and freight |
| Third-party refinery activity | 1 | $1.7B | High-volume, low-margin pass-through; +56% |
| MRO & miscellaneous | 1 | $451M | Third-party maintenance and other revenue |
| Paid-ticket engine | 2 | $10.8B | Premium is now 49.8% of ticket revenue |
| SkyMiles ecosystem | 2 | $2.3B | Travel redemption plus partner monetization |
| Adjacent travel & aviation services | 2 | $2.8B | Cargo, services, refinery and MRO |
| Operating revenue | 3 | $15.9B | Up 13%, including refinery pass-through |
| Operating income | 4 | $501M | 3.2% operating margin |
| Salaries & related costs | 4 | $4.5B | Largest airline cost; +11% |
| Aircraft fuel & taxes | 4 | $2.7B | $2.78 per gallon; +14% |
| Refinery expense | 4 | $1.7B | Matches reported refinery other revenue |
| Fleet, airports, selling & other | 4 | $6.4B | Contractors, rents, maintenance and service |
| From | To | Value |
|---|---|---|
| Main cabin tickets | Paid-ticket engine | $5.4B |
| Premium tickets | Paid-ticket engine | $5.4B |
| Loyalty award travel | SkyMiles ecosystem | $1.0B |
| Loyalty & partner economics | SkyMiles ecosystem | $1.2B |
| Travel services & cargo | Adjacent travel & aviation services | $732M |
| Third-party refinery activity | Adjacent travel & aviation services | $1.7B |
| MRO & miscellaneous | Adjacent travel & aviation services | $451M |
| Paid-ticket engine | Operating revenue | $10.8B |
| SkyMiles ecosystem | Operating revenue | $2.3B |
| Adjacent travel & aviation services | Operating revenue | $2.8B |
| Operating revenue | Operating income | $501M |
| Operating revenue | Salaries & related costs | $4.5B |
| Operating revenue | Aircraft fuel & taxes | $2.7B |
| Operating revenue | Refinery expense | $1.7B |
| Operating revenue | Fleet, airports, selling & other | $6.4B |