How fast did the airplanes go on 911?

On September 11, 2001, the hijacked airplanes flew at high speeds, with American Airlines Flight 11 and United Airlines Flight 175 reaching speeds of approximately 440 to 500 miles per hour as they approached their targets in New York City. Similarly, American Airlines Flight 77, which struck the Pentagon, was traveling around 530 miles per hour. United Airlines Flight 93, which crashed in Pennsylvania, was also flying at high speed before the passengers intervened.