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
Best option
Boston
St. Louis
Outbound
04/03/26
direct
AA3867
03h 13min
Return
04/16/26
direct
AA3822
02h 43min
American Airlines ?
$511
Boston
St. Louis
Outbound
04/03/26
direct
AA4531
03h 28min
Return
04/16/26
direct
AA3822
02h 43min
American Airlines ?
$525
Boston
St. Louis
Outbound
04/03/26
direct
AA3867
03h 13min
Return
04/16/26
direct
AA4518
02h 43min
American Airlines ?
$601
Boston
St. Louis
Outbound
04/03/26
direct
AA4531
03h 28min
Return
04/16/26
direct
AA3822
02h 43min
American Airlines ?
$1,121
Boston
St. Louis
Outbound
04/03/26
2 Stopovers (ATL, MCO)
F93511, F91242, F92635
36h 41min
Return
04/16/26
3 Stopovers (DFW, LHR, DUB)
IB4888, IB4206, EI0169, EI0139
27h 00min
Frontier Airlines ?
$1,523
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 $ 510,20
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