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MiG-31 Foxhound vs Su-27 Flanker

MiG-31 Foxhound vs Su-27 Flanker at a glance — top speed 3,000 vs 2,500 km/h, range 3,000 vs 3,530 km, max takeoff weight 46,200 vs 30,000 kg, built 519 vs 680 units.

Mikoyan MiG-31 Foxhound combat aircraft side profile drawing
🇷🇺 MiG-31 Foxhound
Sukhoi Su-27 Flanker combat aircraft side profile drawing
🇷🇺 Su-27 Flanker
Specifications
MiG-31 Foxhound Su-27 Flanker
Origin country 🇷🇺 Ex-USSR 🇷🇺 Ex-USSR
Category Combat Aircraft Combat Aircraft
Manufacturer Mikoyan Sukhoi
First flight 16 September 1975 20 May 1977
Year introduced 1981 1985
Number produced 519 units 680 units
Average unit price $55 million $30 million
Wing area 61.6 m² 62.0 m²
Wingspan 13.5 m 14.7 m
Height 6.2 m 5.9 m
Length 22.7 m 21.9 m
Maximum speed 3000 km/h 2500 km/h
Operational range 3,000 km 3,530 km
Service ceiling 20,600 m 18,500 m
Max. takeoff weight 46,200 kg 30,000 kg
Empty weight 21,830 kg 16,300 kg
Total thrust 2 x 15,500 kgf 2 x 12,502 kgf
Performance Radar Chart
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Frequently Asked Questions

Which is faster, the MiG-31 Foxhound or Su-27 Flanker?
The MiG-31 Foxhound is faster with a maximum speed of 3,000 km/h compared to the Su-27 Flanker's 2,500 km/h, a difference of 500 km/h.
Which has longer range, the MiG-31 Foxhound or Su-27 Flanker?
The Su-27 Flanker has a longer range at 3,530 km compared to the MiG-31 Foxhound's 3,000 km.
Which can fly higher, the MiG-31 Foxhound or Su-27 Flanker?
The MiG-31 Foxhound has a higher service ceiling at 20,600 meters (67,585 ft) compared to the Su-27 Flanker's 18,500 meters (60,695 ft).
Which is heavier, the MiG-31 Foxhound or Su-27 Flanker?
The MiG-31 Foxhound has a higher maximum takeoff weight at 46,200 kg compared to the Su-27 Flanker's 30,000 kg.
Which is larger, the MiG-31 Foxhound or Su-27 Flanker?
The MiG-31 Foxhound is longer at 22.7 meters compared to the Su-27 Flanker's 21.9 meters.
Which is more expensive, the MiG-31 Foxhound or Su-27 Flanker?
The MiG-31 Foxhound is more expensive at approximately $55 million per unit compared to the Su-27 Flanker at $30 million.
Which entered service first, the MiG-31 Foxhound or Su-27 Flanker?
The MiG-31 Foxhound entered service first in 1981, 4 years before the Su-27 Flanker which entered service in 1985.
Which has been built in greater numbers, the MiG-31 Foxhound or Su-27 Flanker?
The Su-27 Flanker has been produced in greater numbers with 680 units compared to 519 units of the MiG-31 Foxhound.