Baltimore (BWI) to Saint Louis (STL) flights
One airline flies nonstop from Baltimore (BWI) to Saint Louis (STL): Southwest Airlines. The two airports are 736 miles (1,185 km) apart. There are also 25 ways to fly it with one stop, through Columbus, Pittsburgh and Cleveland and more.
Airlines flying nonstop from BWI to STL
- Southwest AirlinesNot in an allianceWho books it
BWI to STL with one stop
25 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Columbus (CMH)Southwest Airlines the whole way
- Via Pittsburgh (PIT)Southwest Airlines the whole way
- Via Cleveland (CLE)Southwest Airlines the whole way
- Via Detroit (DTW)Delta Air Lines and Southwest Airlines the whole way
- Via Nashville (BNA)Southwest Airlines the whole way
- Via Chicago (MDW)Southwest Airlines the whole way
- Via Chicago (ORD)American Airlines and United Airlines the whole way
- Via Philadelphia (PHL)Southwest Airlines the whole way
- Via Raleigh/Durham (RDU)Southwest Airlines the whole way
- Via Charlotte (CLT)American Airlines and Southwest Airlines the whole way
- Via Norfolk (ORF)Southwest Airlines the whole way
- Via Milwaukee (MKE)Southwest Airlines the whole way
- Via New York (EWR), then United Airlines
- Via Atlanta (ATL)Delta Air Lines, Southwest Airlines and 1 more the whole way
- Via Myrtle Beach (MYR)Southwest Airlines the whole way
BWI to STL: common questions
Which airlines fly nonstop from BWI to STL?
Southwest Airlines flies nonstop from Baltimore (BWI) to Saint Louis (STL).
How far is Baltimore from Saint Louis by plane?
Baltimore (BWI) and Saint Louis (STL) are 736 miles (1,185 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
How many miles does BWI to STL cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for BWI to STL with taxes and fees.
Where can I connect between Baltimore and Saint Louis?
The most direct connections are through Columbus (CMH), Pittsburgh (PIT), Cleveland (CLE), Detroit (DTW) and Nashville (BNA). On 24 of them the same airline flies both flights, for example Southwest Airlines through Columbus.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.