Cheap Flights from Boston to Saint Louis Starting at $117

Helping travelers to find the best flight offers

Cheapest flights from Boston to Saint Louis

Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Boston to Saint Louis. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.

Cheapest one way flight

$117

Frontier Airlines
Frontier Airlines
1 transfer
15h 13m
06/13/2025

The cheapest one-way flight from Boston to Saint Louis departs on 06/13/2025, is operated by Frontier Airlines and costs $117

Cheapest round trip flight

$241

Frontier Airlines
Frontier Airlines
1 transfer
1d 5h 2m
08/01/2025

The cheapest roundtrip flight from Boston to Saint Louis departs on 08/01/2025, is operated by Frontier Airlines and costs $241

The fastest flight

15h 13m

Fastest flight from Boston to Saint Louis takes 15h 13m

Direct flights

No direct flights

There are no direct flights on this route.

Earliest flight

5:50 AM

Latest flight

7:40 PM

Direct flights count

39

Distance

1666km

Timezone difference

1h

The distance between Boston and Saint Louis is 1666km (1033 miles). There are 39 direct flights from Boston to Saint Louis. The time difference between Boston and Saint Louis is 1h . Flights from Boston begin at 5:50 AM. The latest flight from Boston departs at 7:40 PM.

See also:

Cheap flights to United States

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Direct flights airfares to Saint Louis

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Cheapest air tickets to Boston

Airfare from Boston to Saint Louis by month

We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Boston to Saint Louis

  • Avg Price

Airlines operating on route

Below you will find a list of airlines operating flights on the Boston — Saint Louis route and the starting prices for flights of each specific airline on it.

Direct Flights from Boston to Saint Louis

A direct flight is the most convenient and comfortable way to fly from Boston to Saint Louis, despite the fact that sometimes flights with transfers can cost significantly less.

Schedule of direct flights from Boston to Saint Louis

A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Boston to Saint Louis:

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Unable to find information about the schedule of direct flights from

Boston airports overview

BOS
Logan International Airport
+3
American Airlines
Frontier Airlines
Spirit Airlines
Airlines flying to this airport
$116
Starting at
$225
on average

Saint Louis airports overview

STL
Lambert-St. Louis International Airport
+3
American Airlines
Frontier Airlines
Spirit Airlines
Airlines flying to this airport
$116
Starting at
$225
on average

Frequently asked questions (FAQ)

Answers to questions about the route that travelers are most interested in.

Special offers and sales on air tickets from Boston to Saint Louis

We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.

Alternative routes

New Bedford ➜ Saint Louis•New Haven ➜ Saint Louis•Manchester ➜ Saint Louis•New York ➜ Saint Louis•Providence ➜ Saint Louis•Portland ➜ Saint Louis•Stamford ➜ Saint Louis•Boston ➜ Nashville•Boston ➜ Burlington•Boston ➜ Chicago•Boston ➜ Cedar Rapids•Boston ➜ Champaign•Boston ➜ Evansville•Boston ➜ Indianapolis•Boston ➜ Memphis