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

Shannon Airport. This airport in Ireland is also referred to as SNN or sometimes EINN
Jorge Chavez Airport. This airport in Peru is also referred to as LIM or sometimes SPIM
London Gatwick Airport. This airport in the United Kingdom is also referred to as LGW or sometimes EGKK

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".