Flights for WN257 These are not all the flights that WN257 has taken, just some of them that have flown in or out of SFO

SWA257 (LAX-SFO)
This Southwest Airlines flight traveled from Los Angeles International Airport to San Francisco International Airport, on September 22, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for WN257.
SWA257 (LAX-SFO)
This Southwest Airlines flight traveled from Los Angeles International Airport to San Francisco International Airport, on August 19, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for WN257.
SWA257 (LAX-SFO)
This Southwest Airlines flight traveled from Los Angeles International Airport to San Francisco International Airport, on September 13, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for WN257.
SWA257 (LAX-SFO)
This Southwest Airlines flight traveled from Los Angeles International Airport to San Francisco International Airport, on August 15, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for WN257.
SWA257 (LAX-SFO)
This Southwest Airlines flight traveled from Los Angeles International Airport to San Francisco International Airport, on September 10, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for WN257.
SWA257 (LAX-SFO)
This Southwest Airlines flight traveled from Los Angeles International Airport to San Francisco International Airport, on September 23, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for WN257.
SWA257 (LAX-SFO)
This Southwest Airlines flight traveled from Los Angeles International Airport to San Francisco International Airport, on September 19, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for WN257.
SWA257 (MKE-SFO)
This Southwest Airlines flight traveled from General Mitchell International Airport to San Francisco International Airport, on January 14, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for WN257.
SWA257 (MKE-SFO)
This Southwest Airlines flight traveled from General Mitchell International Airport to San Francisco International Airport, on January 21, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for WN257.
SWA257 (MKE-SFO)
This Southwest Airlines flight traveled from General Mitchell International Airport to San Francisco International Airport, on February 05, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for WN257.
SWA257 (MKE-SFO)
This Southwest Airlines flight traveled from General Mitchell International Airport to San Francisco International Airport, on January 15, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for WN257.
SWA257 (MKE-SFO)
This Southwest Airlines flight traveled from General Mitchell International Airport to San Francisco International Airport, on February 07, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for WN257.

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".