Flights for UA91 These are not all the flights that UA91 has taken, just some of them that have flown in or out of SFO

UAL91 (DEN-SFO)
This United Airlines flight traveled from Denver International Airport to San Francisco International Airport, on October 05, 2006. Passengers were flying aboard a Boeing 757-200. See all the flights for UA91.
UAL91 (EWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on May 30, 2007. Passengers were flying aboard an Airbus A320-200. See all the flights for UA91.
UAL91 (EWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on June 07, 2007. Passengers were flying aboard an Airbus A319. See all the flights for UA91.
UAL91 (EWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on June 18, 2007. Passengers were flying aboard an Airbus A319. See all the flights for UA91.
UAL91 (EWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on June 09, 2007. Passengers were flying aboard an Airbus A319. See all the flights for UA91.
UAL91 (EWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on June 08, 2007. Passengers were flying aboard an Airbus A319. See all the flights for UA91.
UAL91 (EWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on June 16, 2007. Passengers were flying aboard an Airbus A319. See all the flights for UA91.
UAL91 (EWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on June 06, 2008. Passengers were flying aboard a Boeing 757-200. See all the flights for UA91.
UAL91 (EWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on May 29, 2007. Passengers were flying aboard an Airbus A320-200. See all the flights for UA91.
UAL91 (EWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on January 17, 2007. Passengers were flying aboard an Airbus A319. See all the flights for UA91.
UAL91 (EWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on January 28, 2007. Passengers were flying aboard an Airbus A319. See all the flights for UA91.
UAL91 (EWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on January 30, 2007. Passengers were flying aboard an Airbus A319. See all the flights for UA91.

All these flight data are available as openly licensed data on the sfomuseum-data GitHub account. If you'd like to read more about our efforts to archive flight data at SFO Museum have a look a the Mills Field weblog posts tagged "flightdata".