Reel Faces: United 93
- Explores the real people behind the film's story with photographs, multimedia, and related links.
- http://www.chasingthefrog.com/reelfaces/united93.php

United 93 - The Movie
- Offers film synopsis, cast list, interview, facts, rumors, timeline and resource materials.
- http://www.united93-the-movie.com/

Universal Studios: United 93
- Official site provides cast, director's statement, filmmakers, photo gallery, downloads, video clips, memoriam featuring biographies of each passenger, message board, national memorial and fund donation option.
- http://www.united93movie.com/index.php

United 93
- Offers full cast and crew, external reviews, trivia, filming locations, news articles, trailers, photo gallery and discussion board.
- http://www.imdb.com/title/tt0475276/