The Contract and Its Context¶
The Czech Republic formally signed an agreement in principle for 24 F-35A Lightning II fighters in July 2023, with a contract letter of offer and acceptance under US Foreign Military Sales valued at approximately $5.6 billion including aircraft, weapons, training, infrastructure, and a multi-year sustainment package. Defence Minister Jana Černochová described the decision as “the most important defence investment in Czech history” — a characterisation that reflects both the procurement scale and its strategic significance.
The contract followed a 2022 government decision that fundamentally reconsidered the Czech Republic’s air power posture. The context was 24 February 2022: Russia’s full-scale invasion of Ukraine reframed a fighter acquisition that had previously been treated primarily as a defence industry competition into an urgent operational capability question. The Czech Air Force was operating 14 JAS-39C/D Gripen fighters on lease from the Swedish government — capable aircraft, but a small fleet, leased (not owned), and scheduled for return as the lease reached its end.
Replacing the Gripens: The End of the SAAB Relationship¶
The Czech Republic has operated JAS-39 Gripens since 2005 under a lease agreement with the Swedish government (not SAAB directly) — an arrangement that reduced Czech capital expenditure but created dependencies on lease renewal and Swedish political will. The lease covered 14 aircraft (12 single-seat JAS-39C and 2 twin-seat JAS-39D) providing a single combat squadron at Čáslav Air Base.
The Gripen lease arrangements were renewed through 2024 while the permanent replacement competition was conducted. Czech pilots flying Gripens in Nordic and NATO air policing rotations — including Baltic Air Policing deployments — have maintained genuine combat readiness, but the 14-aircraft fleet was inadequate for sustained operations: a single aircraft squadron can generate perhaps 8 sorties per day in high-tempo operations, providing minimal surge capacity.
SAAB lobbied actively for Czech selection of the JAS-39E Gripen NG — the substantially upgraded next-generation variant with AESA radar, increased payload, and improved networking — at approximately $60–80 million per aircraft. The argument was continuity: trained Czech pilots, established maintenance infrastructure, and lower total lifecycle cost than F-35. The counterargument, which prevailed, was strategic: in a NATO alliance where the United States provides critical enablers (ISR, strategic airlift, logistics), operating the same platform as the US and Poland creates interoperability dividends that offset higher unit cost.
The SAAB relationship is not entirely severed: Czech Gripens are returning to Swedish ownership as the lease expires in phases through 2024–2026, and Sweden operates Gripens domestically. But the Czech Republic’s permanent air power future is F-35.
Delivery Schedule: 2029 Onwards¶
Czech F-35 deliveries are scheduled to begin in 2029, reflecting Lockheed Martin’s F-35 production queue. With approximately 156 aircraft per year production rate and an order book that already includes Polish, Finnish, German, Belgian, Dutch, Danish, Norwegian, Italian, and other allied orders, Czech slots beginning in 2029 reflect realistic queue positioning rather than programme delay.
The delivery schedule creates a gap: Czech Gripens will be returning to Sweden from 2024 while the F-35s will not arrive until 2029. This gap will be bridged by a combination of Czech Air Force operations at reduced intensity and reliance on allied air policing — primarily from poland’s F-16s and later F-35s — for Czech airspace assurance. The Czech government has also explored temporary lease options for bridging aircraft, including used F-16s, though no firm contract has been announced.
Full delivery of all 24 F-35As is expected by approximately 2035, with initial operational capability (IOC) anticipated approximately 18–24 months after first delivery, around 2031. Full operational capability (FOC) for the Czech F-35 fleet — with trained crews, weapons integration, maintenance infrastructure, and C2 connections fully operational — is likely 2033–2035.
Čáslav Air Base: Basing and Infrastructure¶
Čáslav Air Base (officially Základna taktického letectva Čáslav, 21st Tactical Air Base) in Central Bohemia will host the Czech F-35 fleet, as it currently hosts the Gripen squadron. Significant infrastructure investment is required before F-35 operations can begin: low-observable aircraft maintenance requires purpose-built hangars with humidity, temperature, and particulate control; F-35 maintenance tooling is aircraft-specific and substantial; and the secure communications infrastructure for F-35’s Mission Data Files (the classified threat libraries that populate the electronic warfare and radar systems) requires SCIF-standard facilities.
The Czech government has budgeted approximately €500 million in base infrastructure investment over the programme’s first decade, funded partly through Czech defence budget capital allocation and partly through US FMS case provisions. Čáslav’s runway (3,000m), apron, and fuel storage are adequate; it is the maintenance and secure facility infrastructure that requires significant new construction.
There is discussion within NATO planning circles about Čáslav’s potential as a Central European F-35 maintenance hub — given that Czech Republic neighbours poland (48 F-35s), Slovakia, Austria, and Hungary, a depot-level maintenance facility at Čáslav could serve multiple allied fleets. This would require investment in facilities and Czech Air Force maintenance capacity beyond national requirements, but the economics are potentially attractive if allied nations co-fund the infrastructure. No formal agreement for this role has been concluded, but it is under examination.
Visegrad Air Power: Czech + Polish F-35s¶
The Visegrad Four (Poland, Czech Republic, Slovakia, Hungary) are acquiring F-35s in two of four cases, creating a regional air power concentration that did not exist in 2020. Poland’s 48 F-35A aircraft, with deliveries running from 2024 through approximately 2030, will form the dominant air combat force in the group; Czech Republic’s 24 jets add depth and geographic positioning.
The combined 72 F-35A aircraft in Polish and Czech service — operational by the mid-2030s at current schedules — will represent a significant portion of the F-35s in European NATO. For comparison: Norway operates 52, Denmark 27, Belgium 34, Netherlands 52. The Central European F-35 concentration will create genuine fifth-generation air combat capability in the region that currently depends primarily on fourth-generation platforms (F-16, F/A-18, Eurofighter) in Western Europe.
Slovakia has not joined the F-35 programme. Bratislava operates 11 F-16V Block 70/72 fighters (delivered from 2023), a capable fourth-generation platform that provides NATO interoperability without fifth-generation cost. Hungary operates 14 JAS-39 Gripens (domestically purchased, not leased) alongside legacy MiG-29 variants being phased out.
The SAAB Gripen Programme Impact¶
Czech withdrawal from the Gripen lease market, combined with the decision for F-35 permanent replacement, represents a reputational and commercial setback for SAAB’s export strategy. The JAS-39E Gripen NG — the current production variant — has found customers in Sweden, Brazil, and potential interest from South Africa and Southeast Asia, but no NATO European member has selected it for new procurement since 2005–2015 era Czech and Hungarian decisions (both of which are now being superseded).
Sweden’s own Gripen fleet (approximately 60 JAS-39E/F on order or delivered) keeps the programme viable industrially, and Sweden’s continued Gripen choice over F-35 reflects a combination of industrial policy (SAAB is a major Swedish employer), export financing (Sweden can offer government-backed loans), and genuine capability assessment. But the loss of the Czech follow-on, combined with finland’s F-35 choice, signals that Gripen is not the platform of choice for frontline NATO states facing peer threats.
The F-35’s sensor fusion, stealth, and interoperability with US and NATO assets have proven decisive in competition with fourth-generation alternatives at every major European competition since 2018. Sweden’s retention of Gripen reflects unique domestic conditions rather than a general competitive preference.
What 24 Czech Jets Add to Regional Defence¶
Twenty-four F-35As provides the Czech Air Force with genuine multi-role combat capability across air superiority, strike, and electronic attack missions. Specific capabilities added to the Central European NATO picture include:
SEAD/DEAD capability: F-35A’s ALQ-239 electronic warfare suite and compatibility with AGM-88 HARM anti-radiation missiles, combined with its stealth, provides credible suppression of enemy air defences — a mission set that Czech Gripens could not perform effectively and that is critical for any high-intensity air campaign.
Long-range strike: JASSM and JASSM-ER compatibility (confirmed in the FMS package) gives Czech jets the ability to strike targets at 370 km (JASSM) and 925 km (JASSM-ER) ranges, bringing Russian logistics and command nodes in the western military district within range from Czech airspace.
Sensor fusion and intelligence sharing: F-35’s AN/APG-81 AESA radar, EO-DAS electro-optical distributed aperture system, and AN/ASQ-239 electronic warfare data can be shared via Multi-Function Advanced Data Link (MADL) with allied F-35s in formation, creating a distributed sensor picture that four-generation aircraft cannot replicate.
For nato-eastern-flank air power planning, Czech F-35s provide NATO planners a second Central European fifth-generation node — geographically positioned to cover approaches from the south and southeast of the main Polish defensive axis — that adds depth to what would otherwise be a single F-35 concentration in Poland.