St. Louis Lambert Airport Informational Guide to St. Louis Lambert Airport (STL) - NON OFFICIAL

St. Louis Airport Terminals

St Louis Airport Terminals are two:

Terminal 1 

St. Louis Airport Terminal 1 is the Domestic Terminal.

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Terminal 2 

St. Louis Airport Terminal 2 is the International Terminal.

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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.