All the airports that flights arriving at Gate A4 ( between 2019-10-16 and 2020-~05 ) have come from See the airports that flights leaving from Gate A4 are going to / or see all the flights in and out of this gate

Hartsfield-Jackson Atlanta International Airport. This airport in the United States is also referred to as ATL or sometimes KATL
Palm Springs International Airport. This airport in the United States is also referred to as PSP or sometimes KPSP
San Francisco International Airport. This airport in the United States is also referred to as SFO or sometimes KSFO
Norman Y Mineta San Jose International Airport. This airport in the United States is also referred to as SJC or sometimes KSJC
Long Beach Daugherty Field Airport. This airport in the United States is also referred to as LGB or sometimes KLGB
Ontario International Airport. This airport in the United States is also referred to as ONT or sometimes KONT

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".