Watch 9/11: Four Flights

Four flights--American 11, United 175, American 77, and United 93--took off the morning of September 11, 2001 unaware of the life-changing events to follow.

9/11: Four Flights is a 2021 documentary with a runtime of 1 hour and 26 minutes. It has received mostly positive reviews from critics and viewers, who have given it an IMDb score of 7.5.