IMO one of the best things about Saint Louis. Makes it incredible easy to get around. Even goes to the airport.
from st-louis lambert...
from st-louis lambert airport,there is a metrolink very convenient to downtown:3$;to go to the airport from downtown,it costs only 1,25 $
take a pass with metrolink+bus;a day pass costs 4$
Between the Airport, Union...
Between the Airport, Union Station, Busch Stadium, Downtown and Laclede's Landing as well as points in between, you may use the MetroLink!