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

Dusseldorf International Airport. This airport in Germany is also referred to as DUS or sometimes EDDL
Berlin Tegel Airport. This airport in Germany was also referred to as TXL or sometimes EDDT

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".