commercial airplanes cant go Mach 1(concord is only one that can) so anywhere below 700 k/h is valid
i have no clue
740 mph
The average speed if an airplane travels 1364 miles in 5.5 hours is 248 miles/hr.
137knots as an average
150 knots
Every aircraft has a different height, and there are so many it is impossible to say an average speed. Most airliners cruise around 580-640 mph.
In 1919 they had pasenger air service between Paris and London.
too variable to answer without knowing which airplane and under what circumstances and whither ground speed or airpseed - can be anywhere from 0 to several hundred mph
880-915 km/h
an aeroplane can go between 500-600 mphThe average speed of an airplane is about 500-600 mph
About 630- 660 MPH.
360 km/h