What is the average speed of a fighter jet?

The average speed of a fighter jet varies depending on the type of jet and its mission. Generally, fighter jets can reach speeds of up to Mach 2, which is about 1,534 miles per hour (2,469 kilometers per hour). However, most fighter jets cruise at speeds between Mach 0.8 and Mach 1.2, which is about 618 miles per hour (995 kilometers per hour) to 918 miles per hour (1,478 kilometers per hour).