how many planes hit the towers on 9/11

Two planes hit the Twin Towers on September 11, 2001. The first plane, American Airlines Flight 11, struck the North Tower at 8:46 a.m., and the second plane, United Airlines Flight 175, hit the South Tower at 9:03 a.m. These were two of the four hijacked planes on that day, with the other two hitting the Pentagon and crashing in Pennsylvania after passengers intervened.