Modern airliners typically cruise at speeds ranging from Mach 0.78 to Mach 0.85, which is below the speed of sound. The exact cruising speed varies depending on the aircraft type and specific model. Here are some approximate Mach numbers for popular commercial airliners:
- Boeing 737: Cruising speed of Mach 0.78 to Mach 0.82.
- Airbus A320: Cruising speed of Mach 0.78 to Mach 0.82.
- Boeing 747: Cruising speed of Mach 0.84 to Mach 0.85.
- Airbus A380: Cruising speed of Mach 0.85.
It's important to note that these figures are approximate and can vary based on factors such as altitude, weather conditions, and flight phase. Additionally, some military aircraft or specialized aircraft designed for higher speeds, such as supersonic business jets or experimental aircraft, can achieve speeds approaching or surpassing the speed of sound (Mach 1 and above).