Four planes- American Airlines Flight 11 (crashed into the north tower), United Airlines Flight 175 (south tower), American Airlines Flight 77 (Pentagon) and United Airlines Flight 93 (crashed in a field in Pennsylvania after passengers fought the hijackers and attempted to take back control of the plane).
American Airlines and United Airlines were the two airlines that had planes hijacked on 9/11.
American Airlines Flight 11 was hijacked first on September 11, 2001.
There were four planes that were hijacked on September 11. The hijackers were part of the terrorist group, al-Qaeda. Osama Bin Laden ordered the attacks.
At 6:35 a.m.
Four planes were hijacked. Two crashed into the World Trade Center, one crashed into the Pentagon, and one crashed in a field.
there were 19 hijackers involved in 9/11 and they hijacked 4 planes ......
4 planes flight 11 , 175, 77. and 93 both united an American airlines
Three of the planes were American Airlines flights and one was from United Airlines,
ujryyyyyyyyyyyyyy
Four airplanes were hijacked on 9/11.
yes it was by the terrorists
The planes on 9/11 were hijacked by terrorists and deliberately flown into the towers.