Flights for UA1491 These are not all the flights that UA1491 has taken, just some of them that have flown in or out of SFO

UAL1491 (SFO-PDX)
This United Airlines flight traveled from San Francisco International Airport to Portland International Airport, on July 24, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA1491.
UAL1491 (SFO-PDX)
This United Airlines flight traveled from San Francisco International Airport to Portland International Airport, on July 10, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA1491.
UAL1491 (SFO-PDX)
This United Airlines flight traveled from San Francisco International Airport to Portland International Airport, on July 15, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA1491.
UAL1491 (SFO-PDX)
This United Airlines flight traveled from San Francisco International Airport to Portland International Airport, on July 29, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA1491.
UAL1491 (SFO-PDX)
This United Airlines flight traveled from San Francisco International Airport to Portland International Airport, on July 17, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA1491.
UAL1491 (SFO-PDX)
This United Airlines flight traveled from San Francisco International Airport to Portland International Airport, on August 05, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA1491.
UAL1491 (SFO-PDX)
This United Airlines flight traveled from San Francisco International Airport to Portland International Airport, on July 31, 2013. Passengers were flying aboard a Boeing 737-900. See all the flights for UA1491.
UAL1491 (SFO-PHX)
This United Airlines flight traveled from San Francisco International Airport to Sky Harbor International Airport, on December 13, 2014. Passengers were flying aboard a Boeing 737-900. See all the flights for UA1491.
UAL1491 (SFO-PHX)
This United Airlines flight traveled from San Francisco International Airport to Sky Harbor International Airport, on December 03, 2014. Passengers were flying aboard a Boeing 737-900. See all the flights for UA1491.
UAL1491 (SFO-PHX)
This United Airlines flight traveled from San Francisco International Airport to Sky Harbor International Airport, on December 06, 2014. Passengers were flying aboard a Boeing 737-900. See all the flights for UA1491.
UAL1491 (SFO-YVR)
This United Airlines flight traveled from San Francisco International Airport to Vancouver International Airport, on January 01, 2014. Passengers were flying aboard a Boeing 737-700. See all the flights for UA1491.

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".