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The fastest fighter aircraft is the MiG 25, with speeds topping at Mach 3.2 (2,450 mph/4,000 km/h). Pilots were not allowed to go beyond Mach 2.8. Above Mach 2.8, the engines would overheat and burn up.
The Raptor can fly at Mach 1.7 - 1,122 miles per hour at 40,000 feet - without frequent refueling. Top speed with afterburners blazing: more than 1,300 miles per hour. The F-22 does more than any other fighter has ever done, said defense analyst Dan Goure of the conservative-leaning Lexington Institute.