Flights for UA131 These are not all the flights that UA131 has taken, just some of them that have flown in or out of SFO

UAL131 (SFO-IAD)
This United Airlines flight traveled from San Francisco International Airport to Dulles International Airport, on January 21, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA131.
UAL131 (SFO-IAD)
This United Airlines flight traveled from San Francisco International Airport to Dulles International Airport, on January 11, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA131.
UAL131 (SFO-IAD)
This United Airlines flight traveled from San Francisco International Airport to Dulles International Airport, on January 08, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA131.
UAL131 (SFO-IAD)
This United Airlines flight traveled from San Francisco International Airport to Dulles International Airport, on January 14, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA131.
UAL131 (SFO-IAD)
This United Airlines flight traveled from San Francisco International Airport to Dulles International Airport, on February 07, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA131.
UAL131 (SFO-IAD)
This United Airlines flight traveled from San Francisco International Airport to Dulles International Airport, on January 09, 2013. Passengers were flying aboard a Boeing 737-800. See all the flights for UA131.
UAL131 (SFO-IAD)
This United Airlines flight traveled from San Francisco International Airport to Dulles International Airport, on January 25, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA131.
UAL131 (SFO-IAD)
This United Airlines flight traveled from San Francisco International Airport to Dulles International Airport, on January 17, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA131.
UAL131 (SFO-IAD)
This United Airlines flight traveled from San Francisco International Airport to Dulles International Airport, on January 03, 2013. Passengers were flying aboard a Boeing 737-800. See all the flights for UA131.
UAL131 (SFO-IAD)
This United Airlines flight traveled from San Francisco International Airport to Dulles International Airport, on January 04, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA131.
UAL131 (SFO-IAD)
This United Airlines flight traveled from San Francisco International Airport to Dulles International Airport, on January 30, 2013. Passengers were flying aboard a Boeing 737-800. See all the flights for UA131.
UAL131 (SFO-IAD)
This United Airlines flight traveled from San Francisco International Airport to Dulles International Airport, on January 10, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA131.

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".