Flight Routes from Boston to St. Louis

Trip type

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
07/26/26
direct
AA3814
03h 16min
Return
08/05/26
direct
AA3615
02h 40min
American Airlines ?
$478
Boston
St. Louis
Outbound
06/25/26
direct
AA4678
03h 10min
Return
06/30/26
direct
AA3814
02h 45min
American Airlines ?
$500
Boston
St. Louis
Outbound
06/25/26
1 Stopover (ATL)
F93085, F94473
08h 22min
Return
06/30/26
1 Stopover (ATL)
F94474, F93512
18h 00min
Frontier Airlines ?
$515
Boston
St. Louis
Outbound
07/26/26
direct
AA3814
03h 16min
Return
08/05/26
1 Stopover (ORD)
AA1926, AA2837
09h 44min
American Airlines ?
$537
Boston
St. Louis
Outbound
06/25/26
1 Stopover (ATL)
F93085, F94473
08h 22min
Return
06/30/26
1 Stopover (ATL)
F94474, F93086
08h 45min
Frontier Airlines
$550
Boston
St. Louis
Outbound
07/26/26
1 Stopover (ATL)
F93085, F94473
26h 47min
Return
08/05/26
2 Stopovers (DEN, MSP)
F94567, SY0658, SY0253
36h 25min
Frontier Airlines ?
$556
Boston
St. Louis
Outbound
06/25/26
1 Stopover (ORD)
UA0503, UA2000
05h 51min
Return
06/30/26
1 Stopover (ORD)
UA4423, UA1606
05h 40min
United Airlines
$563
Boston
St. Louis
Outbound
07/26/26
1 Stopover (ATL)
F93085, F94473
08h 22min
Return
08/05/26
1 Stopover (PDX)
AS1634, AS0436
11h 00min
Frontier Airlines ?
$582
Boston
St. Louis
Outbound
06/25/26
1 Stopover (DCA)
AA1556, AA5309
12h 08min
Return
06/30/26
1 Stopover (ORD)
AA6352, AA2682
09h 30min
American Airlines ?
$697
Boston
St. Louis
Outbound
06/25/26
1 Stopover (LGA)
DL5732, DL4905
07h 43min
Return
06/30/26
1 Stopover (JFK)
DL4825, DL2639
05h 23min
Delta Air Lines ?
$3,001
Prices based on recent searches, subject to last-minute changes
Page 1 / 2

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 $477.20
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