Schönefeld was the first airport I used in Berlin, September 2010 being the first time I visited.
SXF used to be East Berlin’s only, and East Germany’s main civil airport. The airport will be closed when the “new” Brandenburg airport opens, and is the smaller of the two Berlin airports operational until then. Schönefeld is situated just inside the state of Brandenburg, which surrounds the city-state of Berlin, and is named for the nearby town. The new Brandenburg airport occupies the same locality as the old Schönefeld airport.