Flights from St. Louis to Boston

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Our cheapest offers for flights from St. Louis to Boston

Here you can compare cheap flights from St. Louis (STL) to Boston (BOS) 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 Boston. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
St. Louis
Boston
Outbound
04/26/25
1 Stopover (ORD)
UA1156, UA1495
07h 00min
Return
05/23/25
1 Stopover (ORD)
UA2251, UA2100
07h 18min
United Airlines ?
$457
Best option
St. Louis
Boston
Outbound
04/26/25
direct
AA3822
02h 38min
Return
05/23/25
direct
AA3381
03h 10min
American Airlines ?
$525
St. Louis
Boston
Pay attention to transfer at connecting flight
Outbound
04/26/25
3 Stopovers (FLL, LGA, EWR, MCO)
NK1041, NK3387, NK0915, NK0644
23h 53min
Return
05/23/25
3 Stopovers (MSP, ORD, BRL)
SY0254, SY0261, 9X0445, 9X0446
30h 15min
Spirit Airlines
$873
St. Louis
Boston
Outbound
04/26/25
1 Stopover (ORD)
UA4383, UA0580
06h 43min
Return
05/23/25
1 Stopover (ORD)
UA2251, UA2100
07h 18min
United Airlines ?
$482
St. Louis
Boston
Outbound
04/26/25
direct
AA3822
02h 38min
Return
05/23/25
direct
AA3381
03h 10min
American Airlines ?
$618
St. Louis
Boston
Outbound
04/26/25
direct
AA3822
02h 38min
Return
05/23/25
direct
AA3381
03h 10min
American Airlines ?
$1,394
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from St. Louis to Boston

Favorite airline: Spirit Airlines
64 % of bookings on this flight route are made with Spirit Airlines, American Airlines and Delta.
Spirit Airlines
27 %
American Airlines
20 %
Delta
17 %
Direct flights are more expensive
Direct flights on this route are $285.00 more expensive on average than flights with a stopover.
non stop flight
1 stop
2 stops
02h 40min
05h 10min
22h 05min
$525
$240
$379
Favourite connection: via Orlando
When booking flights from St. Louis to Boston 48 % of travelers prefer to fly via Orlando.
Route
bookings
1 stopover Orlando International Airport, FL
10h 30min, from $252
48 %
1 stopover Hartsfield-Jackson Atlanta International Airport, GA
05h 49min, from $249
24 %
1 stopover New York - Newark Liberty International Airport, NJ
05h 10min, from $240
14 %

Important flight information

Flight information: St. Louis - Boston

Roundtrip from $456.06
Flight duration min. 02:30 / max. 10:00
Return flight duration min. 03:15/ max. 09:55
Distance 1682 km
Flights per week 29
Departure airport Airport St. Louis - Lambert International Airport (STL)
Arrival airport Airport Boston Logan International Airport, MA (BOS)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Boston
Flight destinations with a similar price
Flight destinations with a similar price
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* Prices may vary, please check the travel details given by the online travel agency before booking. Prices include taxes.