All the airports that Southwest Airlines flights have traveled to See the airports that Southwest Airlines flights have come from / or see all the flights this airline has flown (in and out of SFO)

Manchester-Boston Regional Airport. This airport in the United States is also referred to as MHT or sometimes KMHT
Eugene Airport-Mahlon Sweet Field. This airport in the United States is also referred to as EUG or sometimes KEUG
Hopkins International Airport. This airport in the United States is also referred to as CLE or sometimes KCLE
George Bush Intercontinental Airport. This airport in the United States is also referred to as IAH or sometimes KIAH
Jack Mcnamara Field Airport. This airport in the United States is also referred to as CEC
Los Cabos International Airport. This airport in Mexico is also referred to as SJD or sometimes MMSD
Benito Juarez International Airport. This airport in Mexico is also referred to as MEX or sometimes MMMX
Jorge Chavez Airport. This airport in Peru is also referred to as LIM or sometimes SPIM
Windsor Airport. This airport in Canada is also referred to as YQG
Victoria International Airport. This airport in Canada is also referred to as YYJ or sometimes CYYJ
London Heathrow Airport. This airport in the United Kingdom is also referred to as LHR or sometimes EGLL
Cunnamulla Aerodrome. This airport in Australia is also referred to as CMA

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".