The now obsolete Concorde had a cruising speed of Mach 2.2 This is about l500 MPH at the normal cruising height of the Concorde- 60,000 Feet. The Mach factor is constant only at sea level-760 MPH.-...
the average speed for a plane is 500 to 900 miles per an hour.
Most passenger jets fly at a speed of 400-500 knots.
the Cessna 406 can travel up to the speed of 455 km/h (283 mph)
An airplane can travel at a speed of 400kmph to 9000kmph.