Israel’s Ministry of Defense has approved the purchase of 50 additional combat aircraft in a single procurement cycle, clearing a fourth squadron of F-35 stealth fighters and a second squadron of F-15IA heavy strike jets. The decision, announced by the Ministerial Procurement Committee in May 2026, represents one of the largest fighter expansion commitments by any U.S. ally and will push Israel’s F-35 fleet toward roughly 100 airframes while doubling its next-generation F-15 force.
The scale of the buy reflects a country that has spent the past two years fighting on multiple fronts and drawing heavily on its air power. Israeli jets have conducted sustained operations over Gaza and Lebanon and carried out long-range strikes against targets in Iran, campaigns that tested both airframe availability and munitions depth. Rather than consolidating around a single platform, Israel is betting on two complementary fleets: one built for stealth penetration, the other for carrying enormous weapons loads over long distances.
The F-35 expansion: from 75 to roughly 100
Israel took delivery of its first F-35, designated the Adir (“Mighty One”), in 2016 and has since built up three squadrons of approximately 25 aircraft each. The third-squadron contract, signed with the U.S. government and independently confirmed by Lockheed Martin, was valued at approximately $3 billion and processed through the standard Foreign Military Sales framework administered by the F-35 Joint Program Office.
The fourth squadron follows the same pathway. At roughly 25 jets, it would bring Israel’s total Adir fleet to about 100, a figure consistent with the known squadron structure though not formally declared as an official fleet target by the Israeli government. That would make Israel the largest F-35 operator outside the United States by a significant margin, surpassing partner nations like Japan, the United Kingdom, and Italy.
The Adir is based on the F-35A airframe but incorporates Israeli-developed mission systems, electronic warfare suites, and software modifications that allow the jet to integrate with the Israel Defense Forces’ indigenous command-and-control architecture. Those customizations add cost and complexity to each production lot, and per-unit pricing for the fourth squadron has not been disclosed. Whether the purchase will be funded through U.S. Foreign Military Financing or Israel’s own defense budget also remains unspecified.
The F-15IA: a different kind of fighter for a different kind of mission
The F-15IA is not a warmed-over legacy Eagle. It is a newly built variant based on Boeing’s F-15EX Advanced Eagle platform, tailored to Israeli requirements. Where the F-35 is designed to slip past air defenses undetected, the F-15IA is built to carry a massive weapons payload, up to 29,500 pounds, across combat ranges that exceed what the smaller F-35 can manage. For a country that may need to strike targets deep inside Iran or across the broader Middle East, that combination of range and payload is difficult to replicate with any other platform in production.
The U.S. Department of Defense awarded Boeing’s St. Louis facility a contract with a ceiling of $8.577 billion covering design, integration, testing, production, and delivery of 25 F-15IA aircraft, with a built-in option for 25 more. The Ministerial Procurement Committee’s approval of a second squadron aligns with that option, though neither government has publicly confirmed whether the option has been formally exercised or whether a separate procurement action is underway.
The first F-15IA squadron gives Israel a potent long-range strike asset. The second doubles the available force, providing enough depth to sustain operations over time without burning through airframe hours at an unsustainable rate. For Israeli planners who watched their existing fleet absorb punishing operational tempos during recent conflicts, that depth matters as much as any single capability upgrade.
A combined investment north of $10 billion
Adding the F-15IA program ceiling to the approximate cost of two F-35 squadrons (the third at $3 billion, with the fourth likely in a similar range) puts the combined price tag well above $10 billion. That figure carries caveats: the F-15IA ceiling includes the option for the second squadron but also covers development and testing costs that are front-loaded, and the fourth F-35 squadron’s final price has not been published. Still, the order of magnitude is clear. This is a generational investment in air combat capacity.
Israel’s annual defense budget has grown substantially in the wake of the October 7, 2023, attacks and the multi-front campaigns that followed. The fighter purchases fit within a broader recapitalization effort that includes munitions replenishment, air defense expansion, and ground force modernization. How the aircraft acquisitions will be balanced against those competing priorities, and how much of the cost Washington will underwrite, are questions that will play out over the next several budget cycles.
What is still missing from the picture
The official announcements are notably silent on several points that will determine how quickly these jets translate into operational capability. Delivery timelines for neither the fourth F-35 squadron nor the second F-15IA squadron have been disclosed. Given that Lockheed Martin’s F-35 production line serves a global order book and Boeing’s F-15 line in St. Louis is managing multiple international customers, slot availability and production sequencing will shape when the first new jets arrive at Israeli bases.
Basing decisions are also undisclosed. Israel currently operates its F-35s from Nevatim Air Base in the Negev desert, but whether the fourth squadron will stand up there or at a separate installation has not been stated. The same ambiguity applies to the F-15IA force. Dispersing high-value aircraft across multiple bases would improve survivability against missile attack, a consideration that has grown more urgent as Iran and Hezbollah have demonstrated increasingly precise ballistic and cruise missile capabilities.
Perhaps most critically, neither government has laid out how maintenance infrastructure, pilot training pipelines, and munitions stockpiles will scale to support nearly 100 F-35s alongside 50 F-15IAs. Absorbing that many advanced fighters requires not just hangar space but trained maintainers, spare parts supply chains, and enough precision-guided munitions to make the aircraft operationally relevant. Those enabling investments are often more expensive and time-consuming than the aircraft themselves.
Why two fleets instead of one
The decision to expand both the F-35 and F-15IA simultaneously, rather than going all-in on stealth, reflects a pragmatic calculation. The F-35 excels at penetrating contested airspace, gathering intelligence, and striking defended targets with a small radar signature. But it carries a limited internal weapons load (external pylons compromise its stealth), and its operational costs per flight hour remain high. The F-15IA fills the gaps: it can haul far more ordnance, fly longer unrefueled missions, and do so at a lower cost per flight hour than the F-35, even if it lacks stealth.
For Israel, which faces potential threats ranging from Iranian nuclear facilities buried deep underground to dispersed militia rocket arsenals in Lebanon and Syria, having both tools available is more than a luxury. A plausible strike package against a hardened, distant target might use F-35s to suppress air defenses and F-15IAs to deliver the heavy bunker-busting munitions needed to reach underground facilities. Neither aircraft does both jobs optimally on its own.
The dual-fleet approach also hedges against supply chain risk. Relying entirely on a single airframe from a single manufacturer would leave Israel vulnerable to production delays, grounding orders (the F-35 fleet has experienced several), or political disruptions in the U.S.-Israel relationship. Maintaining two distinct platforms from two different manufacturers provides a degree of operational insurance that a single-type fleet cannot.
What this signals to the region
A 50-aircraft expansion does not happen in a strategic vacuum. Israel’s neighbors and adversaries will read the procurement as a statement of long-term intent to maintain overwhelming air superiority across the Middle East. Iran, which has invested heavily in air defense systems, ballistic missiles, and proxy forces precisely because it cannot compete with Israel in the air, will see the buy as confirmation that any future confrontation will be shaped by Israeli air power operating at greater scale and with greater persistence than before.
For the United States, the sale reinforces Israel’s position as the most capable regional military partner and deepens the industrial ties between the two countries’ defense sectors. It also locks in decades of sustainment revenue for Lockheed Martin and Boeing, creating economic and political constituencies in the U.S. that have a stake in the relationship’s continuity.
The procurement committee’s approval is a formal starting gun, not a finish line. Contracts will need to be finalized, production slots secured, and billions of dollars allocated across Israeli and American budget lines. But the strategic direction is now fixed: Israel intends to operate one of the world’s most formidable mixed fighter fleets, built around stealth and striking power in roughly equal measure, for decades to come.
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*This article was researched with the help of AI, with human editors creating the final content.
