Flights for WN1604 These are not all the flights that WN1604 has taken, just some of them that have flown in or out of SFO

SWA1604 (SFO-KLAS)
This Southwest Airlines flight traveled from San Francisco International Airport to McCarran International Airport, on September 28, 2017. Passengers were flying aboard a Boeing 737-700. See all the flights for WN1604.
SWA1604 (SFO-LAS)
This Southwest Airlines flight traveled from San Francisco International Airport to McCarran International Airport, on February 12, 2011. Passengers were flying aboard a Boeing 737-300. See all the flights for WN1604.

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".