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Cheap flights from Boston to St. Louis from $68

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 7/24. 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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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

$68

Fastest flight time

2h 58m

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 $68. The best round-trip flight deal from Boston to St. Louis found on momondo in the last 72 hours is $291.
The fastest flight from Boston to St. Louis takes 2h 58m
Direct flights go from Boston to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

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 November

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 Monday

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

At noon. Boston to St. Louis flights are approximately 16% more expensive in the evening than at noon

What is the cheapest airline that flies to St. Louis from Boston?

Spirit Airlines. Alaska Airlines, American Airlines, and Delta are the most popular carriers operating from Boston to St. Louis

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?

34 days before. The cheapest time to buy a flight from Boston to St. Louis is approximately 34 days to departure

How many flights depart from Boston to St. Louis on average per day?

As of April 2024, there are 5 flights per week flying from Boston to St. Louis. The most common time of day flights depart is 6:00AM, with 82% of flights taking off at noon.

How many flights depart from Boston to St. Louis on average per week?

40 flights are operational weekly from Boston to St. Louis as of April 2024. The most popular departure day for this route is Sunday, with 18% of flights per week taking off on this day.

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

You could potentially save up to 64% on your flight if you consider stops on a Boston to St. Louis flight.

When traveling from Boston to St. Louis, the most popular airport to fly into is Lambert-St Louis Airport. The majority of travelers flying into Lambert-St Louis Airport from Boston are departing from Boston Logan Intl Airport. You may be looking for an airport near Boston Logan Intl Airport to depart from when traveling to St. Louis and Providence-TFGreen Airport, located in Providence is a great option. If you are looking for an alternate airport to fly into near Lambert-St Louis Airport, Springfield Capital Airport is a great option and is located in Springfield. In April, $147 is typically the cheapest round trip price you’ll find from Boston to St. Louis which you can find when you fly BOS — STL.

Boston Logan Intl Airport (BOS) to Lambert-St Louis Airport (STL)$147
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Providence-TFGreen Airport (PVD) to Lambert-St Louis Airport (STL)$306
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Boston Logan Intl Airport (BOS) to Springfield Capital Airport (SPI)$431
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Providence-TFGreen Airport (PVD) to Springfield Capital Airport (SPI)$400
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Easily compare round-trip flights from Boston to St. Louis

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Boston to St. Louis by changing tabs
Multiple Airlines
May 7
BOS1:06 pmBoston Logan Intl
23h 24m
3 stops
STL11:30 amLambert-St Louis
May 9
STL7:30 pmLambert-St Louis
14h 57m
2 stops
BOS11:27 amBoston Logan Intl
American Airlines
May 18
BOS8:50 amBoston Logan Intl
8h 33m
1 stop
STL4:23 pmLambert-St Louis
May 20
STL5:04 amLambert-St Louis
4h 41m
1 stop
BOS10:45 amBoston Logan Intl
Spirit Airlines
Apr 22
BOS4:26 pmBoston Logan Intl
18h 18m
2 stops
STL9:44 amLambert-St Louis
Apr 23
STL2:35 pmLambert-St Louis
24h 06m
2 stops
BOS3:41 pmBoston Logan Intl
Frontier
May 15
BOS11:36 amBoston Logan Intl
20h 32m
1 stop
STL7:08 amLambert-St Louis
May 17
STL7:44 pmLambert-St Louis
13h 55m
2 stops
BOS10:39 amBoston Logan Intl
Delta
May 18
BOS5:45 amBoston Logan Intl
7h 03m
1 stop
STL11:48 amLambert-St Louis
May 20
STL6:12 pmLambert-St Louis
14h 55m
2 stops
BOS10:07 amBoston Logan Intl
United Airlines
Apr 20
BOS6:01 amBoston Logan Intl
5h 16m
1 stop
STL10:17 amLambert-St Louis
Apr 22
STL5:25 pmLambert-St Louis
6h 06m
1 stop
BOS12:31 amBoston Logan Intl

Find the cheapest one-way flights from Boston to St. Louis

If you're looking for one-way flights from Boston to St. Louis, view some of our deals below provided by American Airlines, Frontier and Spirit Airlines
Frontier
Jul 24
BOS8:15 amBoston Logan Intl
7h 27m
1 stop
STL2:42 pmLambert-St Louis
Spirit Airlines
Jun 3
BOS12:07 pmBoston Logan Intl
26h 30m
1 stop
STL1:37 pmLambert-St Louis
Sun Country Air
Sep 12
BOS11:41 amBoston Logan Intl
7h 20m
1 stop
STL6:01 pmLambert-St Louis

Search last-minute flights to St. Louis from Boston

Find and compare round-trip flight prices for your last-minute flight from Boston to St. Louis
Spirit Airlines
Apr 22
BOS4:26 pmBoston Logan Intl
18h 18m
2 stops
STL9:44 amLambert-St Louis
Apr 23
STL2:35 pmLambert-St Louis
24h 06m
2 stops
BOS3:41 pmBoston Logan Intl
Multiple Airlines
Apr 22
BOS4:26 pmBoston Logan Intl
18h 18m
2 stops
STL9:44 amLambert-St Louis
Apr 24
STL11:33 amLambert-St Louis
22h 00m
2 stops
BOS10:33 amBoston Logan Intl
Delta
Apr 21
BOS5:45 amBoston Logan Intl
6h 14m
1 stop
STL10:59 amLambert-St Louis
Apr 23
STL6:04 amLambert-St Louis
7h 36m
1 stop
BOS2:40 pmBoston Logan Intl
United Airlines
Apr 24
BOS5:45 amBoston Logan Intl
5h 14m
1 stop
STL9:59 amLambert-St Louis
Apr 24
STL4:49 pmLambert-St Louis
12h 07m
1 stop
BOS5:56 amBoston Logan Intl
Spirit Airlines
Apr 25
BOS11:11 amBoston Logan Intl
8h 29m
1 stop
STL6:40 pmLambert-St Louis
Apr 27
STL11:39 amLambert-St Louis
21h 22m
2 stops
BOS10:01 amBoston Logan Intl
American Airlines
Apr 22
BOS11:05 amBoston Logan Intl
3h 12m
STL1:17 pmLambert-St Louis
Apr 24
STL1:47 pmLambert-St Louis
2h 42m
BOS5:29 pmBoston Logan Intl

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 $105Free CancellationRating
6.3
4,175 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $147Free CancellationRating
6.4
8,785 reviews
Search Spirit Airlines flights
DeltaPriceFrom $197Free CancellationRating
8.0
11,123 reviews
Search Delta flights
American AirlinesPriceFrom $278Free CancellationRating
7.3
14,952 reviews
Search American Airlines flights
United AirlinesPriceFrom $319Free CancellationRating
7.4
11,360 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $366Free CancellationRating
8.1
9,085 reviews
Search Alaska Airlines flights
JetBluePriceFrom $432Free CancellationRating
7.6
4,685 reviews
Search JetBlue flights
  • JetBlue Flights From Boston to St. Louis

    JetBlue operates around 13 flights from Boston to St. Louis every week. The average price of these flights found in the last 72 hours has been $541, but momondo users have found JetBlue deals from Boston to St. Louis from as low as $432 round-trip. JetBlue has been scored 7.6/10 in 4,685 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 $278, round-trip. It should be noted that an average American Airlines flight deal for this route in this time was higher, at $452 round-trip. American Airlines operates 13 flights out of Boston into St. Louis in an average week, so prices vary by time and availability. 14,952 American Airlines reviews by users on momondo have scored the airline at 7.3/10.


United Airlines flights from Boston to St. Louis

Our best United Airlines deals on Boston to St. Louis flight tickets
United Airlines
Apr 20
BOS6:01 amBoston Logan Intl
5h 16m
1 stop
STL10:17 amLambert-St Louis
Apr 22
STL5:25 pmLambert-St Louis
6h 06m
1 stop
BOS12:31 amBoston Logan Intl
United Airlines
May 6
BOS10:07 amBoston Logan Intl
6h 46m
1 stop
STL3:53 pmLambert-St Louis
May 7
STL11:10 amLambert-St Louis
11h 28m
2 stops
BOS11:38 pmBoston Logan Intl
United Airlines
May 14
BOS9:25 amBoston Logan Intl
13h 30m
2 stops
STL9:55 pmLambert-St Louis
May 16
STL6:30 amLambert-St Louis
7h 07m
1 stop
BOS2:37 pmBoston Logan Intl

Spirit Airlines flights from Boston to St. Louis

Our best Spirit Airlines deals on Boston to St. Louis flight tickets
Spirit Airlines
Apr 22
BOS4:26 pmBoston Logan Intl
18h 18m
2 stops
STL9:44 amLambert-St Louis
Apr 23
STL2:35 pmLambert-St Louis
24h 06m
2 stops
BOS3:41 pmBoston Logan Intl
Spirit Airlines
Apr 25
BOS11:11 amBoston Logan Intl
8h 29m
1 stop
STL6:40 pmLambert-St Louis
Apr 27
STL11:39 amLambert-St Louis
21h 22m
2 stops
BOS10:01 amBoston Logan Intl
Spirit Airlines
Apr 26
BOS3:40 pmBoston Logan Intl
20h 00m
2 stops
STL10:40 amLambert-St Louis
Apr 28
STL7:30 pmLambert-St Louis
23h 33m
2 stops
BOS8:03 pmBoston Logan Intl

  • 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 00m, 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.


Alternative routes for Boston to St. Louis

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Boston to Kansas City Flights
Fastest flight time3h 27m
Cheapest price$188
Boston to Springfield Flights
Fastest flight time5h 41m
Cheapest price$506
Boston to Columbia, Missouri Flights
Fastest flight time7h 11m
Cheapest price$570
Boston to Joplin Flights
Fastest flight time8h 10m
Cheapest price$510
West Tisbury to St. Louis Flights
Fastest flight time5h 17m
Cheapest price$464
Worcester, Massachusetts to Springfield Flights
Fastest flight time30h 55m
Cheapest price$668

Similar Boston to St. Louis flights

Flexible with your destination? Broaden your search and find flights similar to your Boston to St. Louis route

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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