as the capital of Germany has three different airports.
airport and Tempelhof
airport. While the first two are the most frequently
used ones, Tempelhof is mainly used for local national flights
and some international ones. Most likely you will arrive
at Tegel Airport (especially when coming from overseas via
Frankfurt) or at Schoenefeld Airport when arriving from
Eastern European countries.
there are no non stop flights from the US to Berlin. You
have to connect through Frankfurt, Munic, Paris, London,
Amsterdam or Brussels.