The last commercial supersonic flight was the Concorde in 2003. The Concorde flew commercially starting in 1976, with seating for up to 128 passengers. Its cruising speed was 1,354 mph (2,179 km/h) with a Mach number of 2.04. Before that, the jet regularly flew from Singapore to London, New York to London, and from New York to Mexico City. But on its route to Mexico, it would have to fly at subsonic speeds while crossing over Florida because supersonic flight over land was—and still is
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