A commercial jetliner usually takes off between 160 and 180 mph. The varying speed can be due to wind resistance, overall weight capacity and/or the use of high-lift devices.
Airspeed is measured with respect to the velocity of the object through the air. The average cruising speed is between 550 and 580 mph. Wind resistance is a key factor when determining the speed of the aircraft.
The average landing speed for a commercial jet is 150 to 166 mph. Changes in speed can be a result of weather conditions, runway length and landing weight.
The FAA publishes Type Certificate Date Sheets (TCDS), which are issued for every make and model of commercial jet. These lists give the maximum and minimum speed limits, among other information about each commercial jet.