Commercial jet airliners, have a range of cruising speeds, but most fly at speeds between Mach 0.74 and Mach 0.85. That's 480 to 575 mph or 770 to 930 km/h.
Here are some specifics:
- Boeing 747: Depending on the specific variant, it can cruise at speeds around Mach 0.85, which is approximately 570 mph (920 km/h) at cruising altitude.
- Boeing 777: It has a typical cruising speed of Mach 0.84, roughly 560 mph (905 km/h).
- Airbus A320: Its cruising speed is around Mach 0.78, or about 515 mph (830 km/h).
- Boeing 737: Depending on the model, its cruising speed can range from Mach 0.74 to Mach 0.79, which is approximately 490 to 525 mph (790 to 845 km/h).
- Airbus A380: The world's largest passenger plane cruises at speeds of Mach 0.85, roughly 570 mph (920 km/h).
Of course during your flight training you'll learn about how the altitude and speed of an airplane can also be influenced by factors like wind. The jet streams can increase or decrease the ground speed of an airplane even if its airspeed remains constant.