Flights for UA644 These are not all the flights that UA644 has taken, just some of them that have flown in or out of SFO

UAL644 (IAD-SFO)
This United Airlines flight traveled from Dulles International Airport to San Francisco International Airport, on October 22, 2013. Passengers were flying aboard a Boeing 757-200. See all the flights for UA644.
UAL644 (IAD-SFO)
This United Airlines flight traveled from Dulles International Airport to San Francisco International Airport, on October 30, 2013. Passengers were flying aboard a Boeing 757-200. See all the flights for UA644.
UAL644 (IAD-SFO)
This United Airlines flight traveled from Dulles International Airport to San Francisco International Airport, on November 06, 2013. Passengers were flying aboard an Airbus A320-200. See all the flights for UA644.
UAL644 (IAD-SFO)
This United Airlines flight traveled from Dulles International Airport to San Francisco International Airport, on February 03, 2013. Passengers were flying aboard a Boeing 757-200. See all the flights for UA644.
UAL644 (IAD-SFO)
This United Airlines flight traveled from Dulles International Airport to San Francisco International Airport, on January 27, 2013. Passengers were flying aboard a Boeing 757-200. See all the flights for UA644.
UAL644 (IAD-SFO)
This United Airlines flight traveled from Dulles International Airport to San Francisco International Airport, on January 12, 2013. Passengers were flying aboard a Boeing 757-200. See all the flights for UA644.
UAL644 (IAD-SFO)
This United Airlines flight traveled from Dulles International Airport to San Francisco International Airport, on February 26, 2013. Passengers were flying aboard an Airbus A320-200. See all the flights for UA644.
UAL644 (IAD-SFO)
This United Airlines flight traveled from Dulles International Airport to San Francisco International Airport, on May 03, 2013. Passengers were flying aboard an Airbus A319. See all the flights for UA644.
UAL644 (IAD-SFO)
This United Airlines flight traveled from Dulles International Airport to San Francisco International Airport, on May 24, 2013. Passengers were flying aboard an Airbus A320-200. See all the flights for UA644.
UAL644 (IAD-SFO)
This United Airlines flight traveled from Dulles International Airport to San Francisco International Airport, on June 07, 2013. Passengers were flying aboard a Boeing 757-200. See all the flights for UA644.
UAL644 (IAD-SFO)
This United Airlines flight traveled from Dulles International Airport to San Francisco International Airport, on June 09, 2013. Passengers were flying aboard an Airbus A320-200. See all the flights for UA644.
UAL644 (IAD-SFO)
This United Airlines flight traveled from Dulles International Airport to San Francisco International Airport, on June 18, 2013. Passengers were flying aboard a Boeing 757-200. See all the flights for UA644.

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".