Flights for UA1991 These are not all the flights that UA1991 has taken, just some of them that have flown in or out of SFO

UAL1991 (KEWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on October 06, 2017. Passengers were flying aboard a Boeing 757-200. See all the flights for UA1991.
UAL1991 (KEWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on October 19, 2017. Passengers were flying aboard a Boeing 757-200. See all the flights for UA1991.
UAL1991 (KEWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on October 03, 2017. Passengers were flying aboard a Boeing 757-200. See all the flights for UA1991.
UAL1991 (KEWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on November 01, 2017. Passengers were flying aboard a Boeing 757-200. See all the flights for UA1991.
UAL1991 (KEWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on November 07, 2017. Passengers were flying aboard a Boeing 757-200. See all the flights for UA1991.
UAL1991 (KEWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on November 14, 2017. Passengers were flying aboard a Boeing 757-200. See all the flights for UA1991.
UAL1991 (KEWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on January 06, 2017. Passengers were flying aboard a Boeing 757-200. See all the flights for UA1991.
UAL1991 (SFO-SEA)
This United Airlines flight traveled from San Francisco International Airport to Tacoma International Airport, on November 27, 2015. Passengers were flying aboard an Airbus A320-200. See all the flights for UA1991.

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".