The U.S. Air Force’s FY2025 budget puts the gross/weapon-system unit cost of an F-15EX at $113.137 million. That is a budget estimate for a specific variant and cost measure—not a universal price for every F-15, nor a bare flyaway price.
What the $113.137 million figure covers
The figure comes from the Air Force’s FY2025 aircraft procurement budget exhibit, dated March 2024. It budgets for 18 F-15EX aircraft at a combined gross/weapon-system cost of $2,036.472 million, or $113.137 million per aircraft. The document is a budget request and cost estimate, not a retail price or a final invoice. U.S. Air Force FY2025 Aircraft Procurement Volume I, Exhibit P-5
That distinction matters: the exhibit’s notes caution that cost elements and procurement conditions vary from year to year. Advance procurement funding and changing requirements can affect gross weapon-system unit cost.
Why “F-15 price” can mean different things
Gross/weapon-system unit cost
The $113.137 million figure is the FY2025 budget’s gross/weapon-system unit cost. It should be quoted with that label rather than shortened to “the price of an F-15.”
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Flyaway or aircraft-only cost
Flyaway cost is a narrower measure. The cited budget exhibit’s figure should not be relabeled as an aircraft-only or flyaway price.
Contract value divided by aircraft count
A contract headline may include more than aircraft. In 2020, Boeing announced a nearly $1.2 billion first-lot award for eight F-15EXs that also included support and one-time upfront engineering costs. Dividing the total by eight would therefore not produce a directly comparable aircraft-only price. Boeing’s 2020 F-15EX award announcement
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Does the figure apply to every F-15?
No. The FY2025 figure is specifically for the F-15EX. Boeing describes the EX as an upgraded configuration with digital fly-by-wire controls, a modern mission system, open mission systems architecture and a two-seat layout. Those differences mean the EX estimate should not be applied to older F-15C/D or F-15E aircraft, or to export configurations. Boeing’s F-15EX overview
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to compare other F-15 cost claims
Before comparing published figures, align the variant, cost definition, fiscal year and dollar basis, procurement quantity and production lot, and what the amount includes. In particular, distinguish aircraft-only costs from figures that include support, engineering, spares or other items.
A later Boeing announcement reported a September 29, 2026 award of $2.38 billion for 22 additional F-15EX aircraft and said 120 aircraft were then under contract. The announcement does not itemize the award’s cost elements, so dividing $2.38 billion by 22 would not establish a directly comparable unit cost—and this later award is not the FY2025 budget estimate. Boeing’s September 2026 contract announcement
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