F-4 Phantom II vs KF-21 Boramae
The F-4 Phantom II and the KF-21 Boramae are both Combat Aircraft, manufactured by McDonnell and KAI respectively. Top speed is 2,370 km/h for the F-4 Phantom II vs 2,200 km/h for the KF-21 Boramae. The F-4 Phantom II has an operational range of 680 km vs 1,000 km for the KF-21 Boramae. The F-4 Phantom II operates at altitudes up to 18,288 m compared to 16,764 m for the KF-21 Boramae. Unit cost is $3M for the F-4 Phantom II vs $87.5M for the KF-21 Boramae. The F-4 Phantom II first flew 64 years before the KF-21 Boramae (1958 vs 2022).
| American fighter-bomber, renowned for its widespread use in the Vietnam War and numerous other international military conflicts. | |
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| Origin country | 🇺🇸 United States |
| Category | Combat Aircraft |
| Manufacturer | McDonnell |
| First flight | 27 May 1958 |
| Year introduced | 1962 |
| Number produced | 5195 units |
| Average unit price | $3 million |
| South Korean multirole fighter, developed in the 21st century, deployment and operational history yet to be written. | |
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| Origin country | 🇰🇷 South Korea |
| Category | Combat Aircraft |
| Manufacturer | KAI |
| First flight | 19 July 2022 |
| Year introduced | 2026 |
| Number produced | N/A |
| Average unit price | $87.5 million |
| Wing area | 49.2 m² ◉ |
| Wingspan | 11.7 m â—‰ |
| Height | 5.0 m â—‰ |
| Length | 19.0 m â—‰ |
| Maximum speed | 2370 km/h â—‰ |
| Operational range | 680 km â—‰ |
| Service ceiling | 18,288 m â—‰ |
| Max. takeoff weight | 28,030 kg â—‰ |
| Empty weight | 13,757 kg â—‰ |
| Total thrust | 2 x 16,186 kgf â—‰ |
| Wing area | 46.0 m² ◉ |
| Wingspan | 11.2 m â—‰ |
| Height | 4.8 m â—‰ |
| Length | 16.8 m â—‰ |
| Maximum speed | 2200 km/h â—‰ |
| Operational range | 1,000 km â—‰ |
| Service ceiling | 16,764 m â—‰ |
| Max. takeoff weight | 25,401 kg â—‰ |
| Empty weight | 11,793 kg â—‰ |
| Total thrust | 2 x 12,246 kgf â—‰ |
Performance Radar Chart
Frequently Asked Questions
Which is faster, the F-4 Phantom II or KF-21 Boramae?
The F-4 Phantom II is faster with a maximum speed of 2,370 km/h compared to the KF-21 Boramae's 2,200 km/h, a difference of 170 km/h.
Which has longer range, the F-4 Phantom II or KF-21 Boramae?
The KF-21 Boramae has a longer range at 1,000 km compared to the F-4 Phantom II's 680 km.
Which can fly higher, the F-4 Phantom II or KF-21 Boramae?
The F-4 Phantom II has a higher service ceiling at 18,288 meters (60,000 ft) compared to the KF-21 Boramae's 16,764 meters (55,000 ft).
Which is heavier, the F-4 Phantom II or KF-21 Boramae?
The F-4 Phantom II has a higher maximum takeoff weight at 28,030 kg compared to the KF-21 Boramae's 25,401 kg.
Which is larger, the F-4 Phantom II or KF-21 Boramae?
The F-4 Phantom II is longer at 19.0 meters compared to the KF-21 Boramae's 16.8 meters.
Which is more expensive, the F-4 Phantom II or KF-21 Boramae?
The KF-21 Boramae is more expensive at approximately $88 million per unit compared to the F-4 Phantom II at $3.0 million.
Which entered service first, the F-4 Phantom II or KF-21 Boramae?
The F-4 Phantom II entered service first in 1962, 64 years before the KF-21 Boramae which entered service in 2026.