St. Louis Airport Terminals
St Louis Airport Terminals are two:
Terminal 1
St. Louis Airport Terminal 1 is the Domestic Terminal.
Terminal 2
St. Louis Airport Terminal 2 is the International Terminal.
Inter-terminal transportation
Passengers can transfer from a terminal to the other by a free shuttle bus that frequently runs between terminals.
Service hours: 24 hours. Frequency: 8-15 minutes.
On the other hand, MetroLink Red Line (to downtown St Louis) also has a station at both terminals.