The F-15EX Eagle II is one of those few airplanes that can cover the distance between vintage fighter muscle and the needs of today’s warfighting. Depending on whom you speak to, it’s either a retro-style throwback or a critical component of the future. In reality, it’s neither a relic nor a stopgap measure—it’s a highly modernized, purpose-specific jet built for the realities of today’s intricately complex air combat world.
Its heritage goes back to the original F-15 Eagle, which first flew in the early 1970s. Then, the F-15 was designed to own the dogfight environment, relying on energy-maneuverability theory to provide unrivaled agility. Over the years, it developed through variants such as the F-15C/D and multirole F-15E Strike Eagle, each incorporating new technology to get ahead of the threat. When the U.S. Air Force ordered the F-15EX for the first time in 2020, the mission was simple: exchange old F-15C/Ds with a more capable, updated plane capable of conducting much more than air-to-air combat.
In terms of performance, the F-15EX is a beast. With the ability to achieve Mach 2.5, it’s the fastest fighter on U.S. production lines today. Its two General Electric F110-GE-129 engines produce almost 30,000 pounds of thrust each and take it up to a top altitude of 60,000 feet. Digital fly-by-wire flight controls—introduced in the F-15 family—provide the pilots with even narrower handling and safety margins, enabling them to perform wild maneuvers comparable to more advanced thrust-vectoring designs. Large touchscreen screens and dual Digital Helmet Mounted Cueing Systems in the cockpit provide pilots with a clear picture of the battlefield.
Where the Eagle II shines is in carrying a massive payload—over 29,000 pounds of ordnance. That can be a dozen AMRAAM missiles or even 22-foot-long hypersonic missiles. With AMBER racks, it can hold up to 22 air-to-air missiles, which means it is an unparalleled “missile truck” for supporting stealth fighters by bringing raw firepower from afar. Its open architecture for mission systems allows it to rapidly add new sensors and weapons as technology evolves.
Its electronic warfare is equally impressive. Its AN/APG-82(V)1 AESA radar has long-range detection and multitarget tracking, while its EPAWSS (Eagle Passive/Active Warning and Survivability System) gives it enhanced threat detection and countermeasures. Brig. Gen. Jason Voorheis called EPAWSS a huge step forward in survivability and lethality, capable of finding, identifying, and jamming adversary systems on its own. Because it’s software-centric, it can be updated in real-time to remain effective against shifting threats.
F-15EX is not limited to a single role. While air dominance is part of its DNA, it’s also being considered for missions from electronic attack to manned-unmanned teaming. It has the potential to be outfitted with Next Generation Jammer Pods, which will perform some of the electronic warfare missions previously reserved for other aircraft. Its two-seat configuration makes room for a backseat weapons officer to control drone formations, stretching the jet’s reach without taking it into the most dangerous areas.
Most unorthodox of all is its possibility as an air refueler at high speeds. With “buddy” tanker pods in progress, the F-15EX could top off stealth fighters in much closer proximity to the fight than big, vulnerable tankers can, resupplying the front line and keeping it engaged.
From a cost and logistics perspective, the F-15EX is a huge plus. It’s much cheaper to purchase and maintain compared to stealth-specific aircraft, and it uses roughly 70% of its components from previous F-15s. It takes just two weeks to rotate an F-15C pilot into an F-15EX, which means very little downtime for operational squadrons. The Air Force intends to purchase at least 144 of them, giving it a robust fighter force without being dependent solely on high-maintenance stealth squadrons.
Internationally, the jet has attracted interest from a number of allies. Israel ordered 50 F-15IAs, Indonesia ordered 24 F-15IDNs, and Poland is considering its position. Qatar and Saudi Arabia already have advanced models of the Eagle, further cementing the type’s position as a reliable and versatile platform.
Its lack of stealth is usually criticized as its greatest failing, particularly in light of current long-range air defenses. That’s missing the point, however—the F-15EX isn’t meant to replace stealth planes. Rather, it augments them, performing roles where stealth isn’t quite as necessary while bringing enormous firepower, electronic warfare assistance, and adaptable mission envelopes. Once the airspace is secured, it can take up much of the workload, allowing stealth platforms to be reserved for the missions only they are suited to.
The blending of proven airframe, state-of-the-art avionics, and advanced electronic warfare capabilities guarantees the F-15EX will be on the battlefield for years to come. In a world where responsiveness and flexibility are paramount, the Eagle II demonstrates that speed, payload, and flexibility are as important as stealth in forging air combat’s future.