<P> While subsonic commercial jets took eight hours to fly from New York to Paris , the average supersonic flight time on the transatlantic routes was just under 3.5 hours . Concorde had a maximum cruise altitude of 18,300 metres ( 60,039 ft ) and an average cruise speed of Mach 2.02 , about 1155 knots ( 2140 km / h or 1334 mph ) , more than twice the speed of conventional aircraft . </P>
how long did it take to get to new york on concorde
just under 3.5 hours