Train connection to/from Berlin Zoologischer Garten
Braunschweig - Berlin: approx. every 60 minutes (ICE)
Berlin - Braunschweig: approx. every 60 minutes (ICE)
Traveling time: approx. 1.15 hours
(240 km)

Berlin has three international airports.
Tegel Airport (TXL): scheduled flights and all Lufthansa flights
Schönefeld Airport (SXF): predominantly charter flights