American Airlines Flight 11
Mohamed Atta, a member of terrorist group al-Qaeda and leader of the attacks, and another hijacker, Abdulaziz al-Omari, flew together from Portland, Maine to Boston early on September 11, 2001.  Both hijackers had first class tickets for a flight to Los Angeles, California. Three other hijackers, Waleed al-Shehri, Wail al-Shehri and Satam al-Suqami arrived at Logan International Airport by car. All five checked in and by 07:40, were aboard the aircraft which was supposed to leave at 07:45.