Berlin Tegel Airport is the main international airport of Berlin, the federal capital of Germany, ahead of the smaller Berlin Schönefeld Airport. It is christened after Otto Lilienthal and is the fourth busiest airport in Germany with just over 20.7 million passengers in 2014. The airport is a hub for Air Berlin and serves as a base for Germanwings. It features flights to several European metropolitan and leisure destinations as well as some intercontinental routes.