Boston (BOS) to Saint Louis (STL) flights
2 airlines fly nonstop from Boston (BOS) to Saint Louis (STL): American Airlines and Southwest Airlines. The two airports are 1,044 miles (1,680 km) apart. American Airlines is in oneworld. There are also 30 ways to fly it with one stop, through Pittsburgh, Columbus and Cleveland and more.
Airlines flying nonstop from BOS to STL
- American Airlinesoneworld · bookable with 9 programsWho books it
- Southwest AirlinesNot in an allianceWho books it
Book BOS to STL with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Alaska Atmos RewardsBooks American Airlines
- American AAdvantageBooks American Airlines
- British Airways ClubBooks American Airlines
- Cathay Pacific Asia MilesBooks American Airlines
- Finnair PlusBooks American Airlines
- Iberia ClubBooks American Airlines
- JAL Mileage BankBooks American Airlines
- Qantas Frequent FlyerBooks American Airlines
- Qatar Airways Privilege ClubBooks American Airlines
BOS to STL with one stop
30 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Pittsburgh (PIT)JetBlue Airways and Delta Air Lines, then Southwest Airlines
- Via Columbus (CMH)Delta Air Lines and American Airlines, then Southwest Airlines
- Via Cleveland (CLE)JetBlue Airways and Delta Air Lines, then Southwest Airlines
- Via Detroit (DTW)Delta Air Lines the whole way
- Via New York (EWR)United Airlines the whole way
- Via New York (LGA)American Airlines and Delta Air Lines the whole way
- Via Philadelphia (PHL)American Airlines the whole way
- Via Toronto (YYZ)Air Canada the whole way
- Via Baltimore (BWI)Southwest Airlines the whole way
- Via Dulles (IAD)United Airlines the whole way
- Via Chicago (MDW)Southwest Airlines the whole way
- Via Washington (DCA)American Airlines the whole way
- Via Chicago (ORD)American Airlines and United Airlines the whole way+1
- Via Milwaukee (MKE)Southwest Airlines the whole way+1
- Via Nashville (BNA)Southwest Airlines the whole way
BOS to STL: common questions
Which airlines fly nonstop from BOS to STL?
American Airlines (oneworld) and Southwest Airlines fly nonstop from Boston (BOS) to Saint Louis (STL).
How far is Boston from Saint Louis by plane?
Boston (BOS) and Saint Louis (STL) are 1,044 miles (1,680 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book BOS to STL award flights?
9 programs can book at least one of the nonstop airlines: Alaska Atmos Rewards, American AAdvantage, British Airways Club, Cathay Pacific Asia Miles, Finnair Plus, Iberia Club, JAL Mileage Bank, Qantas Frequent Flyer and 1 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does BOS 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 BOS to STL with taxes and fees.
Where can I connect between Boston and Saint Louis?
The most direct connections are through Pittsburgh (PIT), Columbus (CMH), Cleveland (CLE), Detroit (DTW) and New York (EWR). On 19 of them the same airline flies both flights, for example Delta Air Lines through Detroit.
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.