Watch 9/11: Four Flights (2021) HD Full Movie Free on solarmovie.do. Watch 9/11: Four Flights (2021) online free. American 11, United 175, American 77, and United 93 tells the riveting and emotional human stories o...American 11, United 175, American 77, and United 93 tells the riveting and emotional human stories of those aboard each doomed jetliner.