Flights for WN31 These are not all the flights that WN31 has taken, just some of them that have flown in or out of SFO

SWA31 (SFO-LAX)
This Southwest Airlines flight traveled from San Francisco International Airport to Los Angeles International Airport, on November 29, 2010. Passengers were flying aboard a Boeing 737-300. See all the flights for WN31.
SWA31 (SFO-LAX)
This Southwest Airlines flight traveled from San Francisco International Airport to Los Angeles International Airport, on December 27, 2010. Passengers were flying aboard a Boeing 737-300. See all the flights for WN31.
SWA31 (SFO-LAX)
This Southwest Airlines flight traveled from San Francisco International Airport to Los Angeles International Airport, on December 23, 2010. Passengers were flying aboard a Boeing 737-300. See all the flights for WN31.
SWA31 (SFO-LAX)
This Southwest Airlines flight traveled from San Francisco International Airport to Los Angeles International Airport, on December 30, 2010. Passengers were flying aboard a Boeing 737-300. See all the flights for WN31.
SWA31 (SFO-LAX)
This Southwest Airlines flight traveled from San Francisco International Airport to Los Angeles International Airport, on January 03, 2011. Passengers were flying aboard a Boeing 737-300. See all the flights for WN31.
SWA31 (SFO-LAX)
This Southwest Airlines flight traveled from San Francisco International Airport to Los Angeles International Airport, on November 19, 2010. Passengers were flying aboard a Boeing 737-300. See all the flights for WN31.
SWA31 (SFO-LAX)
This Southwest Airlines flight traveled from San Francisco International Airport to Los Angeles International Airport, on December 29, 2010. Passengers were flying aboard a Boeing 737-700. See all the flights for WN31.
SWA31 (SFO-LAX)
This Southwest Airlines flight traveled from San Francisco International Airport to Los Angeles International Airport, on November 24, 2010. Passengers were flying aboard a Boeing 737-300. See all the flights for WN31.
SWA31 (SFO-LAX)
This Southwest Airlines flight traveled from San Francisco International Airport to Los Angeles International Airport, on November 23, 2010. Passengers were flying aboard a Boeing 737-300. See all the flights for WN31.
SWA31 (SFO-LAX)
This Southwest Airlines flight traveled from San Francisco International Airport to Los Angeles International Airport, on January 04, 2011. Passengers were flying aboard a Boeing 737-300. See all the flights for WN31.
SWA31 (SNA-SFO)
This Southwest Airlines flight traveled from John Wayne Airport to San Francisco International Airport, on November 28, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for WN31.

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".