Flights from Boston to St. Louis

Our cheapest offers for flights from Boston to St. Louis

Here you can compare cheap flights from Boston (BOS) to St. Louis (STL) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to St. Louis. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Boston
St. Louis
Outbound
09/25/25
1 Stopover (ORD)
UA1414, AA2514
18h 48min
Return
10/05/25
1 Stopover (ATL)
F94474, F93512
16h 58min
United Airlines, American Airlines ?
$298
Boston
St. Louis
Pay attention to transfer at connecting flight
Outbound
11/09/25
2 Stopovers (BNA, JBR)
NK0774, 9X0459, 9X0454
24h 39min
Return
12/07/25
1 Stopover (FLL)
NK2158, NK2067
21h 04min
Spirit Airlines, Southern Airways Express
$313
Best option
Boston
St. Louis
Outbound
11/09/25
1 Stopover (ORD)
AA4618, AA4595
09h 37min
Return
12/07/25
direct
AA3416
02h 38min
American Airlines ?
$327
Boston
St. Louis
Outbound
09/25/25
1 Stopover (ORD)
AA1457, AA1926
08h 33min
Return
10/05/25
1 Stopover (PHL)
AA1308, AA1416
05h 23min
American Airlines ?
$342
Boston
St. Louis
Outbound
11/09/25
1 Stopover (SEA)
AS0537, AS0472
15h 59min
Return
12/07/25
1 Stopover (FLL)
NK2158, NK2304
11h 20min
Alaska Airlines ?
$389
Boston
St. Louis
Outbound
09/25/25
1 Stopover (IAD)
UA1734, UA4427
05h 32min
Return
10/05/25
1 Stopover (ORD)
UA4605, UA2067
05h 02min
United Airlines ?
$421
Boston
St. Louis
Outbound
09/25/25
1 Stopover (ORD)
UA1414, UA2618
10h 44min
Return
10/05/25
1 Stopover (ORD)
UA4605, UA2067
05h 02min
United Airlines
$460
Boston
St. Louis
Outbound
11/09/25
1 Stopover (ORD)
AA0488, AA4595
10h 27min
Return
12/07/25
direct
AA4801
02h 40min
American Airlines ?
$478
Boston
St. Louis
Outbound
11/09/25
1 Stopover (ORD)
AA0488, AA3764
09h 08min
Return
12/07/25
direct
AA3416
02h 38min
American Airlines ?
$498
Boston
St. Louis
Outbound
11/09/25
2 Stopovers (ATL, MCO)
F93511, F94556, F91631
28h 13min
Return
12/07/25
3 Stopovers (MCO, DEN, ATL)
F91632, F93311, F93600, F93086
37h 59min
Frontier Airlines ?
$508
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Boston to St. Louis

Favorite airline: American Airlines
Flight tickets on the route Boston – St. Louis are most frequently booked with American Airlines.
American Airlines
24 %
United Airlines
19 %
Delta
14 %
Stopover flights are the cheapest connection
Compared to flights with a stopover, direct flights are $168.00 more expensive on this route.
non stop flight
1 stop
2 stops
02h 58min
06h 46min
12h 25min
$ 557
$ 393
$ 389
Favourite connection: via Orlando
40 % of booked tickets on this route are for flights with a transfer in Orlando.
Route
bookings
1 stopover Orlando International Airport, FL
21h 28min, from $ 451
40 %
1 stopover New York - Newark Liberty International Airport, NJ
06h 46min, from $ 393
30 %
1 stopover Charlotte Douglas International Airport, NC
05h 41min, from $ 412
20 %

Important flight information

Flight information: Boston - St. Louis

Roundtrip from $ 297,92
Flight duration min. 03:15 / max. 09:55
Return flight duration min. 02:30/ max. 10:00
Distance 1682 km
Flights per week 28
Departure airport Airport Boston Logan International Airport, MA (BOS)
Arrival airport Airport St. Louis - Lambert International Airport (STL)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to St. Louis
Flight destinations with a similar price
Flight destinations with a similar price