Travelers will soon be able to fly from the West Coast to the East Coast in just three hours after the Federal Aviation Administration (FAA) proposed to lift a 1970s a blanket ban on overland supersonic flights July 2 and replace it with a noise limit. Currently, the flight time between LA and NYC is around 6 hours, but with supersonic flights operating at a speed of more than 770 miles an hour –– faster than Mach 1 –– the travel time would be cut in half.