US Air Force Pushes F-47 Funding Past $5 Billion as Sixth-Generation Fighter Moves Toward First Flight

The United States Air Force is sharply increasing development funding for the Boeing F-47, signaling that America’s next-generation air superiority fighter is moving from concept and experimentation into a more expensive phase of design, engineering, construction and testing. The service is seeking more than $5 billion for the programme in fiscal year 2027, a major increase over the previous year and one of the clearest signs yet that Washington wants to accelerate its sixth-generation fighter effort.

According to budget documents, the F-47 request rises from about $3.05 billion in fiscal year 2026 to roughly $5.03–5.04 billion in fiscal year 2027. That represents an increase of around 65 percent. Most of the requested funding is directed toward the aircraft’s development and test activities, while a smaller portion is assigned to acquisition support, programme management, civilian pay, contractor services and related infrastructure.

The budget surge comes as the programme enters Engineering and Manufacturing Development, the phase in which a weapon system moves beyond early research and toward the construction and validation of real hardware. For the F-47, that means the focus is shifting to designing, building and testing the aircraft, along with the laboratory and industrial infrastructure needed to certify its systems. This phase is often where advanced aircraft programmes face their most difficult tests, because technical risk, cost growth and schedule pressure become harder to hide once hardware is being built.

Boeing was selected in March 2025 to develop the F-47 under the U.S. Air Force’s Next Generation Air Dominance effort. The aircraft is expected to replace the F-22 Raptor as America’s future air superiority fighter. While many details remain classified, U.S. officials have described the F-47 as a sixth-generation platform designed for greater range, improved stealth, higher survivability, better sustainment and integration with autonomous systems.

The first flight is currently targeted for 2028. U.S. Air Force officials have said the aircraft remains on schedule, and the first airframe is already under production at Boeing. That makes the F-47 one of the most closely watched military aviation programmes in the world, not only because of its expected performance, but because of how quickly the United States is trying to move from classified prototype work to a fielded combat aircraft.

The F-47 is not being built as a simple replacement for a fifth-generation fighter. It is intended to operate in the most heavily defended airspace, where future U.S. aircraft would need to survive against advanced Chinese and Russian integrated air defence systems. The aircraft is expected to combine long range, advanced low-observable design, powerful sensors, electronic warfare capabilities and the ability to work with autonomous wingmen known as Collaborative Combat Aircraft.

That crewed-uncrewed teaming concept is central to the future air combat model envisioned by the U.S. Air Force. In high-end conflict, the F-47 would not operate alone. It would likely act as a command node and penetrating fighter, coordinating with unmanned aircraft that could carry sensors, weapons, electronic warfare payloads or decoys. This approach is designed to increase mass and flexibility without relying only on expensive crewed aircraft.

The funding increase also shows how strongly the Air Force is prioritizing the F-47 over other next-generation fighter projects. In the same budget environment, the Navy’s F/A-XX programme is receiving far less money, creating a sharp contrast between the Air Force’s sixth-generation fighter push and the Navy’s carrier-based future fighter effort. That imbalance may become a point of debate in Congress, especially among lawmakers concerned about naval aviation and the future of aircraft carrier air wings.

For Boeing, the F-47 is a strategically important programme. The company has faced major challenges in its commercial aviation business and in some defence programmes, but winning the F-47 contract gives it a central role in the future of U.S. tactical airpower. The programme also strengthens Boeing’s Phantom Works advanced aircraft portfolio and gives the company a chance to prove it can deliver a classified, high-performance combat aircraft on a compressed timeline.

The Air Force’s longer-term budget projections suggest that high funding levels will continue for several years. The F-47 development request is expected to remain above $5 billion in fiscal year 2028 before gradually declining later in the decade as the programme moves toward initial production. That pattern reflects the heavy cost of engineering development, flight testing, software integration, mission systems certification and industrial preparation.

The programme’s speed is both an advantage and a risk. U.S. officials have said experimental aircraft connected to the NGAD effort have been flying for years, giving the F-47 a more mature design foundation than a programme starting from scratch. However, moving from experimental prototypes to a production fighter is a different challenge. The aircraft must be manufacturable, maintainable, affordable enough to buy in useful numbers and capable of integrating with a wider family of systems.

The comparison with the F-35 is unavoidable. The F-35 became one of the most expensive defence programmes in history, and its development was shaped by concurrency, software delays, sustainment problems and cost growth. The F-47 is being presented as a more focused programme, with a smaller expected fleet and a clearer air superiority mission. But the same basic question remains: whether the United States can develop a highly advanced stealth aircraft without allowing cost and complexity to overwhelm the schedule.

The Air Force is expected to buy at least 185 F-47 aircraft, roughly matching the size of the current F-22 fleet. That number could change depending on cost, threat assessments, production capacity and how many Collaborative Combat Aircraft are eventually fielded alongside it. If the F-47 becomes too expensive, the Air Force may face pressure to rely more heavily on unmanned systems and upgraded fifth-generation aircraft. If it performs as intended, it could become the central platform of U.S. air dominance for decades.

Strategically, the F-47 is aimed squarely at the Indo-Pacific problem. The vast distances of the region, the growing reach of Chinese air defence networks, and the need to operate from dispersed bases all place demands on future fighters that the F-22 and F-35 were not fully designed to meet. Longer range and better survivability are therefore not luxury features; they are core requirements for any aircraft expected to operate inside contested airspace against a peer adversary.

The FY2027 budget request does not guarantee that the programme will stay on schedule. Congress still has the power to adjust funding, demand oversight, or shift money between competing priorities. Classified programmes can also encounter delays that remain hidden from public view until much later. But the size of the request shows that the Air Force is no longer treating the F-47 as a distant concept. It is becoming a major funded acquisition programme.

If the 2028 first-flight target holds, the F-47 could become the first U.S. sixth-generation fighter to move visibly into flight testing. That would place the United States ahead of several competing next-generation combat aircraft efforts, including Europe’s GCAP and FCAS programmes, while also responding to China’s rapid progress in advanced combat aviation.

For now, the message from the budget is clear. The United States is putting serious money behind the F-47, and the programme is entering the phase where promises must turn into hardware. The next few years will determine whether Boeing and the Air Force can turn a classified sixth-generation concept into the aircraft that replaces the F-22 at the top of America’s air combat hierarchy.