STL

$59 Find Cheap Flights from Massachusetts to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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Flights Deals

Cheap Flights from Massachusetts to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Massachusetts to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Massachusetts to St. Louis

Thu, Sep 18 - Sun, Sep 21
Spirit Airlines Logo
6:20 am - 10:50 amBOS-STL
5h 30m1 stop
Spirit Airlines Logo
12:05 pm - 10:43 pmSTL-BOS
9h 38m1 stop
$134Spirit Airlines
Find Deal
Mon, Aug 25 - Sun, Aug 31
Spirit Airlines Logo
6:30 am - 1:32 pmBOS-STL
8h 02m1 stop
Spirit Airlines Logo
2:30 pm - 10:34 pmSTL-BOS
7h 04m1 stop
$135Spirit Airlines
Find Deal
Sat, Aug 16 - Fri, Aug 22
Logo
9:40 am - 11:47 pmBOS-STL
15h 07m1 stop
Logo
2:30 pm - 10:34 pmSTL-BOS
7h 04m1 stop
$194
Find Deal
Sat, Aug 30 - Wed, Sep 3
American Airlines Logo
5:28 am - 1:12 pmBOS-STL
8h 44m1 stop
American Airlines Logo
9:56 am - 6:48 pmSTL-BOS
7h 52m1 stop
$197American Airlines
Find Deal
Tue, Aug 26 - Tue, Sep 2
American Airlines Logo
5:28 am - 12:54 pmBOS-STL
8h 26m1 stop
American Airlines Logo
6:06 am - 3:19 pmSTL-BOS
8h 13m1 stop
$207American Airlines
Find Deal
Wed, Aug 27 - Wed, Sep 3
Southwest Logo
12:55 pm - 8:00 pmBDL-STL
8h 05m1 stop
Southwest Logo
11:35 am - 8:00 pmSTL-BDL
7h 25m2 stops
$234Southwest
Find Deal
Sat, Aug 16 - Sun, Aug 17
Frontier Logo
9:40 am - 11:47 pmBOS-STL
15h 07m1 stop
Frontier Logo
5:40 pm - 8:35 amSTL-BOS
13h 55m1 stop
$235Frontier
Find Deal
Thu, Sep 18 - Sun, Sep 21
Logo
6:10 am - 6:36 pmBDL-STL
13h 26m3 stops
Logo
12:05 pm - 10:47 pmSTL-BDL
9h 42m1 stop
$236
Find Deal
Tue, Oct 7 - Fri, Oct 10
Southwest Logo
6:00 am - 2:10 pmBDL-STL
9h 10m2 stops
Southwest Logo
1:50 pm - 11:30 pmSTL-BDL
8h 40m1 stop
$238Southwest
Find Deal
Fri, Aug 15 - Sun, Aug 17
Frontier Logo
9:40 am - 11:47 pmBOS-STL
15h 07m1 stop
Frontier Logo
5:40 pm - 8:35 amSTL-BOS
13h 55m1 stop
$245Frontier
Find Deal
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Good to know

Low seasonJanuary
Cheapest flight$59
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Boston to St. Louis

FAQs for booking flights from Massachusetts to St. Louis

  • How does KAYAK find such low prices on flights from Massachusetts to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Massachusetts to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Massachusetts to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Massachusetts is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Massachusetts to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Massachusetts with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Massachusetts to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Massachusetts up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to St. Louis

Information on the airport you'll fly into in St. Louis

St. Louis (STL)

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