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Cheap flights from Boston to St. Louis from $62

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to St. Louis departing on 12/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Boston to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from Boston to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Boston to St. Louis.

Cheap last minute flights

Planning a quick getaway from Boston to St. Louis? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to St. Louis, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Boston to St. Louis

Find recent round-trip train or bus tickets from Boston to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
6:00 am - 11:33 pmBOS-STL
18h 33m1 stop
5:05 pm - 12:30 amSTL-BOS
6h 25m1 stop
$118Frontier
Find Deal
Mon, Dec 16 - Tue, Jan 14
6:00 am - 11:27 pmBOS-STL
18h 27m1 stop
5:05 pm - 12:30 amSTL-BOS
6h 25m1 stop
$128Frontier
Find Deal
Thu, Jan 9 - Sun, Jan 12
5:25 am - 12:03 pmBOS-STL
7h 38m1 stop
5:55 pm - 11:51 pmSTL-BOS
4h 56m1 stop
$226Delta
Find Deal
Wed, Dec 18 - Wed, Dec 25
6:31 am - 10:47 amBOS-STL
5h 16m1 stop
1:02 pm - 8:46 pmSTL-BOS
6h 44m2 stops
$231United Airlines
Find Deal
Mon, Jan 13 - Tue, Jan 14
5:10 am - 9:35 amBOS-STL
5h 25m1 stop
12:56 pm - 7:26 pmSTL-BOS
5h 30m1 stop
$246Delta
Find Deal
Sat, Dec 14 - Tue, Dec 17
7:00 am - 11:17 amBOS-STL
5h 17m1 stop
3:32 pm - 11:59 pmSTL-BOS
7h 27m2 stops
$291United Airlines
Find Deal
Thu, Feb 20 - Mon, Feb 24
2:26 pm - 10:05 pmBOS-STL
8h 39m1 stop
9:25 am - 1:05 pmSTL-BOS
2h 40mnonstop
$325American Airlines
Find Deal
Mon, Dec 16 - Tue, Jan 14
10:58 am - 1:14 pmBOS-STL
3h 16mnonstop
4:08 pm - 11:33 pmSTL-BOS
6h 25m1 stop
$342American Airlines
Find Deal
Thu, Dec 12 - Thu, Dec 12
8:00 am - 10:10 amBOS-STL
3h 10mnonstop
8:25 pm - 11:55 pmSTL-BOS
2h 30mnonstop
$344Southwest
Find Deal
Tue, Dec 10 - Thu, Dec 19
8:00 am - 10:10 amBOS-STL
3h 10mnonstop
4:05 pm - 7:30 pmSTL-BOS
2h 25mnonstop
$376Southwest
Find Deal
Wed, Dec 11 - Sat, Dec 14
5:00 am - 3:21 pmBOS-STL
11h 21m1 stop
$62Spirit Airlines
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Thu, Dec 5
6:00 am - 11:27 pmBOS-STL
18h 27m1 stop
$63Frontier
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Wed, Jan 8
6:00 am - 12:32 pmBOS-STL
7h 32m1 stop
$108Delta
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Tue, Feb 18
5:10 am - 9:35 amBOS-STL
5h 25m1 stop
$113Delta
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Tue, Dec 17
1:01 pm - 10:15 pmBOS-STL
10h 14m1 stop
$152American Airlines
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Sat, Mar 1
5:45 am - 12:19 pmBOS-STL
7h 34m2 stops
$153United Airlines
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Tue, Dec 17
6:00 am - 12:19 pmBOS-STL
7h 19m1 stop
$156United Airlines
Find Deal
Mon, Dec 16
8:00 am - 10:10 amBOS-STL
3h 10mnonstop
$171Southwest
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Mon, Dec 16
6:55 am - 9:10 amBOS-STL
3h 15mnonstop
$172Southwest
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Wed, Feb 19
6:00 am - 12:09 pmBOS-STL
7h 09m1 stop
$190American Airlines
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Mon, Nov 25
6:55 pm - 4:26 pmBOS-STL
22h 31m1 stop
5:21 pm - 9:14 amSTL-BOS
14h 53m1 stop
$315Spirit Airlines
Find Deal
Mon, Nov 25 - Tue, Dec 3
11:35 am - 6:51 pmBOS-STL
8h 16m1 stop
5:02 pm - 12:30 amSTL-BOS
6h 28m1 stop
$318Frontier
Find Deal
Mon, Nov 25 - Tue, Dec 3
11:32 am - 7:51 pmBOS-STL
9h 19m2 stops
6:30 am - 2:02 pmSTL-BOS
6h 32m1 stop
$655United Airlines
Find Deal
Mon, Nov 25 - Tue, Dec 3
7:30 am - 2:25 pmBOS-STL
7h 55m2 stops
6:30 am - 12:45 pmSTL-BOS
5h 15m1 stop
$689United Airlines
Find Deal
Fri, Nov 22 - Fri, Nov 29
10:51 am - 1:04 pmBOS-STL
3h 13mnonstop
9:20 am - 12:55 pmSTL-BOS
2h 35mnonstop
$716American Airlines
Find Deal
Fri, Nov 22 - Fri, Nov 29
5:15 am - 9:29 amBOS-STL
5h 14m1 stop
9:20 am - 12:55 pmSTL-BOS
2h 35mnonstop
$726American Airlines
Find Deal
Fri, Nov 22 - Fri, Nov 29
12:35 pm - 9:29 pmBOS-STL
9h 54m2 stops
10:14 am - 6:50 pmSTL-BOS
7h 36m1 stop
$862Delta
Find Deal
Sat, Nov 23 - Tue, Nov 26
7:05 am - 9:15 amBOS-STL
3h 10mnonstop
3:30 pm - 6:55 pmSTL-BOS
2h 25mnonstop
$992Southwest
Find Deal
Thu, Nov 21 - Thu, Nov 21
12:35 pm - 9:29 pmBOS-STL
9h 54m2 stops
6:00 pm - 11:49 pmSTL-BOS
4h 49m1 stop
$997Delta
Find Deal
Sat, Nov 23 - Wed, Nov 27
10:45 am - 7:05 pmBOS-STL
9h 20m2 stops
9:35 pm - 7:50 amSTL-BOS
9h 15m1 stop
$1,015Southwest
Find Deal
Thu, Nov 21 - Thu, Nov 21
6:25 am - 8:43 amBOS-STL
3h 18mnonstop
1:45 pm - 5:20 pmSTL-BOS
2h 35mnonstop
$343American Airlines
Find Deal
Thu, Dec 12 - Thu, Dec 12
8:00 am - 10:10 amBOS-STL
3h 10mnonstop
8:25 pm - 11:55 pmSTL-BOS
2h 30mnonstop
$344Southwest
Find Deal
Tue, Dec 10 - Thu, Dec 19
6:25 am - 8:43 amBOS-STL
3h 18mnonstop
9:25 am - 1:05 pmSTL-BOS
2h 40mnonstop
$350American Airlines
Find Deal
Mon, Dec 16 - Tue, Jan 14
7:40 am - 9:50 amBOS-STL
3h 10mnonstop
9:30 am - 1:00 pmSTL-BOS
2h 30mnonstop
$351Southwest
Find Deal
Sat, Dec 14 - Tue, Dec 17
10:58 am - 1:14 pmBOS-STL
3h 16mnonstop
9:25 am - 1:05 pmSTL-BOS
2h 40mnonstop
$357American Airlines
Find Deal
Tue, Dec 17 - Tue, Dec 24
6:25 am - 8:43 amBOS-STL
3h 18mnonstop
9:25 am - 1:03 pmSTL-BOS
2h 38mnonstop
$375American Airlines
Find Deal
Wed, Dec 11 - Thu, Dec 12
8:00 am - 10:10 amBOS-STL
3h 10mnonstop
4:05 pm - 7:30 pmSTL-BOS
2h 25mnonstop
$376Southwest
Find Deal
Wed, Dec 11 - Sat, Dec 14
10:58 am - 1:14 pmBOS-STL
3h 16mnonstop
1:45 pm - 5:20 pmSTL-BOS
2h 35mnonstop
$382American Airlines
Find Deal
Sat, Dec 14 - Tue, Dec 17
7:10 pm - 9:25 pmBOS-STL
3h 15mnonstop
1:50 pm - 5:20 pmSTL-BOS
2h 30mnonstop
$383Southwest
Find Deal
Fri, Feb 21 - Tue, Feb 25
11:38 am - 1:51 pmBOS-STL
3h 13mnonstop
9:25 am - 1:01 pmSTL-BOS
2h 36mnonstop
$389American Airlines
Find Deal
Sun, Feb 16 - Tue, Feb 18

Delta flights from Boston to St. Louis

Our best Delta deals on Boston to St. Louis flight tickets
Delta
Dec 4
BOS9:05 amBoston Logan Intl
5h 10m
1 stop
STL1:15 pmLambert-St Louis
Dec 10
STL5:57 pmLambert-St Louis
4h 50m
1 stop
BOS11:47 pmBoston Logan Intl
Delta
Dec 18
BOS5:25 amBoston Logan Intl
7h 38m
1 stop
STL12:03 pmLambert-St Louis
Dec 25
STL5:55 pmLambert-St Louis
4h 56m
1 stop
BOS11:51 pmBoston Logan Intl
Delta
Dec 14
BOS5:10 amBoston Logan Intl
5h 25m
1 stop
STL9:35 amLambert-St Louis
Dec 17
STL12:56 pmLambert-St Louis
5h 30m
1 stop
BOS7:26 pmBoston Logan Intl

Frontier flights from Boston to St. Louis

Our best Frontier deals on Boston to St. Louis flight tickets
Frontier
Dec 16
BOS6:00 amBoston Logan Intl
18h 33m
1 stop
STL11:33 pmLambert-St Louis
Jan 14
STL5:05 pmLambert-St Louis
6h 25m
1 stop
BOS12:30 amBoston Logan Intl
Frontier
Jan 9
BOS6:00 amBoston Logan Intl
18h 27m
1 stop
STL11:27 pmLambert-St Louis
Jan 12
STL5:05 pmLambert-St Louis
6h 25m
1 stop
BOS12:30 amBoston Logan Intl
Frontier
Dec 5
BOS6:00 amBoston Logan Intl
18h 24m
1 stop
STL11:24 pmLambert-St Louis
Dec 9
STL5:02 pmLambert-St Louis
6h 28m
1 stop
BOS12:30 amBoston Logan Intl

See travel insights to St. Louis from

How to get the cheapest flight ticket from Boston to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Boston to St. Louis?

February. The cheapest time of year to fly to St. Louis from Boston is February. Most expensive is March

What is the cheapest day to depart Boston for St. Louis?

Tuesday. The cheapest day of the week is typically Tuesday. The most expensive is typically Sunday

When is the cheapest time to fly from Boston to St. Louis?

At noon. Boston to St. Louis flights are approximately 8% more expensive in the afternoon than at noon

What is the cheapest Boston to St. Louis flight route?

Boston Logan Intl - Lambert-St Louis. Fly from Boston Logan Intl to Lambert-St Louis for the best Boston - St. Louis flight prices

How far in advance should you book Boston to St. Louis flights?

58 days before. The cheapest time to buy a flight from Boston to St. Louis is approximately 58 days to departure

Can stopping save me money on Boston to St. Louis flights?

You could potentially save up to 63% on your flight if you consider stops on a Boston to St. Louis flight.

How have Boston to St. Louis flight prices changed over time?

As of November 2024, prices for Boston to St. Louis flights are approximately 15% cheaper when compared to flights at the same time last year.

When to book flights from Boston to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to St. Louis (BOS to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to St. Louis

Best Price Found

$62

Fastest flight time

3h 10m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Boston in the past 72 hours is $62. The best round-trip flight deal from Boston to St. Louis found on momondo in the last 72 hours is $118.
The fastest flight from Boston to St. Louis takes 3h 10m
Direct flights go from Boston to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • How far is Boston Logan Intl to Lambert-St Louis by plane?

    Lambert-St Louis is 1035.0 mi away from Boston Logan Intl. Flights usually cover this in 3h 10m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Lambert-St Louis Airport?

    Prices for flights from Boston Logan Intl Airport to Lambert-St Louis Airport were last updated today.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Boston to St. Louis?

  • What is the most popular airline from Boston to St. Louis?


Best airlines flying from Boston to St. Louis

Compare and see reviews for airlines that fly from Boston to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $118Free CancellationRating
6.1
3,539 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $144Free CancellationRating
6.3
8,174 reviews
Search Spirit Airlines flights
DeltaPriceFrom $196Free CancellationRating
8.0
8,756 reviews
Search Delta flights
United AirlinesPriceFrom $257Free CancellationRating
7.4
9,171 reviews
Search United Airlines flights
American AirlinesPriceFrom $257Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $308Free CancellationRating
8.1
5,014 reviews
Search Southwest flights
  • Southwest Flights From Boston to St. Louis

    Southwest operates around 16 flights from Boston to St. Louis every week. The average price of these flights found in the last 72 hours has been $433, but momondo users have found Southwest deals from Boston to St. Louis from as low as $308 round-trip. Southwest has been scored 8.1/10 in 5,014 reviews.

  • American Airlines Flights From Boston to St. Louis

    The best American Airlines deal for Boston to St. Louis flight tickets found on momondo in the last 72 hours was $257, round-trip. It should be noted that an average American Airlines flight deal for this route in this time was higher, at $437 round-trip. American Airlines operates 13 flights out of Boston into St. Louis in an average week, so prices vary by time and availability. 10,000 American Airlines reviews by users on momondo have scored the airline at 7.2/10.


Why use momondo?

Why should I use momondo to find a flight deal from Boston to St. Louis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Boston to St. Louis for you.

Can I find flights from Boston to St. Louis with flexible booking policies on momondo?

Yes. All flights to St. Louis from Boston on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Boston to St. Louis?

momondo helps you find the best flight between Boston and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Boston to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Boston. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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