All Cute All The Time, Joseph Sanberg, NTD Television, The Bean Revolution, Charming Animals, Meow Share, I Love The Obamas, Backed By Fact, Opposition Report, The Seattle Times, Franklin Graham, Seattle Home Show, Class Size Counts WA, Rare Media, Jim Ferrell, United States Senator Mike Lee, Facebook Engineering, Awesome Pics & Videos, The Black ...
Well it really depends!!! At takeoff the estimated speed for a jet plane is around 450-600 MPH. It depends on its weight, amount of passengers, amount of luggage and other things of that sort. Commercial jet aircraft fly at about Mach 0.88 -- around 500 statute miles per hour.
The speed of sound is not a constant, but depends on altitude (or actually the temperature at that altitude). A plane flying Mach 1.0 at sea level is flying about 1225 km/h (661 Knots, 761 mph), a plane flying Mach 1.0 at 30000 ft is flying 1091 km/h (589 knots, 678 mph) etc. Speeds below Mach 1 are called subsonic, between Mach 0.8-1.2 Transonic and above Mach 1.2 Supersonic. Â©1996-2011 Fighter Planes and Military Aircraft.