Continuity: After the hijackers have taken over the plane, the blond flight attendant's hair, styled in a French Twist, keeps changing from messy (presumably from the chaos) to as smooth and neat as when she boarded the plane. She's never offscreen long enough to have simply fixed it. Not until the passengers revolt does it remain disheveled.
Great sites
Mistakes
The UPS airplane shown on the tarmac at Newark Airport is painted with UPS's new logo, which was not introduced until 2003. See more...
Trivia
Families of the 40 passengers and crew members killed on United Flight 93 cooperated in the production, offering Greengrass detailed background about their loved ones, down to the clothes they wore, what reading materials or music they had with them and what sort of candy they might have snacked on aboard the plane. See more...
United 93 mistakes
Continuity: At the end, during the fight scenes in the first class cabin, the number of overhead compartment doors that are open changes.
Factual error: In an early runway scene, a billboard for the film Chicken Little (2005) can be seen in the background.
United 93 trivia
Families of the 40 passengers and crew members killed on United Flight 93 cooperated in the production, offering Greengrass detailed background about their loved ones, down to the clothes they wore, what reading materials or music they had with them and what sort of candy they might have snacked on aboard the plane.
The FAA National Operations Manager, Ben Sliney, was played by himself. September 11/2001 was also his first day on the job.