HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$64+ Cheap flights from Massachusetts to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — STL
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Massachusetts to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Massachusetts to St. Louis

Keep the following information in mind while searching for Massachusetts to St. Louis flight deals. Data was last updated January 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$234
(Kiwi.com)

One-way from

$64
(Kiwi.com)

Popular in

April

Cheapest in

August

Average price

$419

Good round-trip deal

$383 or less

Good one-way deal

$203 or less
Provider with most accurate pricing for Boston Logan Intl-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Lambert-St Louis flights.
Search Deals
From Massachusetts to Lambert-St Louis
Search Deals
One-way flight from Massachusetts to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Massachusetts to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Massachusetts to Lambert-St Louis.
Search Deals

Find flight deals from Massachusetts to St. Louis

Cheapest flights from Massachusetts to St. Louis
Explore the most affordable flight options available from Massachusetts to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.

This Booking.com deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:00 pm
BDL
-
STL
1 stop6h 59m
Frontier
Mon 3/23:49 pm
STL
-
BDL
1 stop16h 34m
Frontier
Deal found 1/12$161
This Frontier deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/410:19 am
BDL
-
STL
1 stop13h 08m
Frontier
Thu 3/127:47 am
STL
-
BDL
1 stop10h 26m
Frontier
Deal found 1/14$260
This Expedia deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/39:53 pm
BDL
-
STL
1 stop10h 58m
Frontier
Sat 4/114:54 pm
STL
-
BDL
1 stop16h 01m
Frontier
Deal found 1/15$261
This Kiwi.com deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/27:20 am
BDL
-
STL
2 stops16h 13m
Multiple Airlines
Sun 4/53:30 pm
STL
-
BDL
1 stop16h 20m
Multiple Airlines
Deal found 1/13$262
This Kiwi.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/122:27 pm
BDL
-
STL
1 stop17h 24m
Frontier
Sun 2/153:49 pm
STL
-
BDL
1 stop17h 18m
Frontier
Deal found 1/14$284
This Frontier deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/228:08 pm
BDL
-
STL
1 stop11h 54m
Frontier
Thu 3/267:47 am
STL
-
BDL
1 stop10h 26m
Frontier
Deal found 1/12$290
This Kiwi.com deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/122:27 pm
BDL
-
STL
1 stop17h 24m
Frontier
Mon 2/168:22 pm
STL
-
BDL
2 stops36h 01m
Frontier
Deal found 1/13$292
This Southwest deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/24:00 pm
ALB
-
STL
1 stop7h 40m
Southwest
Wed 3/48:20 am
STL
-
ALB
1 stop6h 55m
Southwest
Deal found 1/13$302
This Kiwi.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/118:05 am
BDL
-
STL
1 stop16h 14m
Multiple Airlines
Wed 3/1811:32 am
STL
-
BDL
2 stops30h 41m
Multiple Airlines
Deal found 1/14$305
This Kiwi.com deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/61:56 pm
BDL
-
STL
2 stops10h 37m
Multiple Airlines
Sun 2/88:59 am
STL
-
BDL
1 stop9h 37m
Multiple Airlines
Deal found 1/13$313
This Kiwi.com deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/56:53 pm
ALB
-
STL
1 stop13h 09m
Multiple Airlines
Sun 3/84:51 pm
STL
-
ALB
2 stops24h 38m
Multiple Airlines
Deal found 1/12$318
This American Airlines deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/165:07 pm
ALB
-
STL
1 stop5h 14m
American Airlines
Tue 3/173:49 pm
STL
-
ALB
1 stop6h 55m
American Airlines
Deal found 1/12$322

Cheapflights Fare Finder

 
Customize your flight search to find flights from Massachusetts to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 15, 2026.
Use the filters below to find and compare flights from Massachusetts to St. Louis that are best for you.

Fly from

Massachusetts

Fly to

St. Louis

Route

Depart

Return

Price

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Wed 3/4

10:19 am-10:27 pm

1 stop13h 08m

Lambert-St Louis

Thu 3/12

7:47 am-7:13 pm

1 stop10h 26m

$260

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Mon 3/2

4:00 pm-10:40 pm

1 stop7h 40m

Lambert-St Louis

Wed 3/4

8:20 am-4:15 pm

1 stop6h 55m

$302

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Wed 3/11

8:05 am-11:19 pm

1 stop16h 14m

Lambert-St Louis

Wed 3/18

11:32 am-7:13 pm

2 stops30h 41m

$305

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Thu 2/12

2:27 pm-6:51 am

1 stop17h 24m

Lambert-St Louis

Mon 2/16

8:22 pm-9:23 am

2 stops36h 01m

$306

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Thu 3/5

6:53 pm-7:02 am

1 stop13h 09m

Lambert-St Louis

Sun 3/8

4:51 pm-6:29 pm

2 stops24h 38m

$318

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Mon 3/16

5:07 pm-9:21 pm

1 stop5h 14m

Lambert-St Louis

Tue 3/17

3:49 pm-11:44 pm

1 stop6h 55m

$322

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Fri 1/30

7:00 am-6:51 am

2 stops24h 51m

Lambert-St Louis

Tue 2/3

5:42 pm-3:05 pm

1 stop20h 23m

$322

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 3/31

7:15 am-12:22 pm

1 stop6h 07m

Lambert-St Louis

Wed 4/8

10:00 am-5:26 pm

1 stop6h 26m

$325

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Mon 3/2

2:30 pm-8:09 pm

1 stop6h 39m

Lambert-St Louis

Mon 3/9

5:59 pm-11:10 pm

1 stop4h 11m

$327

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Mon 3/16

5:07 pm-9:21 pm

1 stop5h 14m

Lambert-St Louis

Mon 3/23

6:00 am-12:00 pm

1 stop5h 00m

$327

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 59 results
1
2
3
...
6

Best time to book a flight from Massachusetts to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Massachusetts with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Massachusetts to St. Louis

What is the cheapest month to book a flight from Massachusetts to St. Louis?

Currently, January is the cheapest month in which you can book a flight from Massachusetts to St. Louis (average of $189). Flying from Massachusetts to St. Louis in April is currently the most expensive (average of $327). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MA to STL?

Find hourly flight availability from Massachusetts to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 15, 2026.

When flying from Massachusetts to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 5% versus a flight at noon.

What is the cheapest day to fly from Massachusetts to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Massachusetts to St. Louis. Price data was last updated on January 10, 2026.

Travelers seeking maximum savings on their Massachusetts to St. Louis flight should consider departing on Monday evenings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Massachusetts to St. Louis

Explore weekly flight availability from Massachusetts to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 15, 2026.

The most flights from USMA to STL are scheduled on a Monday (5 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

Related info for your journey

Find useful and relevant information for your journey from Massachusetts to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from Massachusetts?

    Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Massachusetts.

  • How popular is this Massachusetts to St. Louis flight route?

    The Massachusetts to Lambert-St Louis flight path was viewed by 59 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Massachusetts to St. Louis?

    Frontier, Southwest, and American Airlines can get you from Massachusetts to St. Louis in just under 5h 14m. Your travel time can differ by up to 7h 54m. Massachusetts and St. Louis are separated by a distance of 908 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Massachusetts to St. Louis one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $65. Spirit Airlines flights start at $97 while deals on Delta start at $118 one-way.

  • What are the most popular routes from Massachusetts to St. Louis?

    Most travelers choose Boston Logan Intl - Lambert-St Louis, Hartford Bradley Intl - Lambert-St Louis or Albany Intl - Lambert-St Louis when deciding on the best route from Massachusetts to St. Louis.

  • What are the most reliable airlines from Massachusetts to St. Louis?

    The top 3 most reliable airlines when flying from Massachusetts to St. Louis are Iberia (90%), Republic Airways (85%) and American Airlines (83%).

  • What are the cheapest flights from Massachusetts to St. Louis?

    The cheapest flight price from Massachusetts to St. Louis is $143. On average you can expect to pay $386. The most popular route, (Boston Logan Intl - Lambert-St Louis), can usually be booked for $145.

  • Can I find deals for flights from Massachusetts to St. Louis that include hotel bookings?

    Yes. In addition to deals on Massachusetts to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Massachusetts to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Massachusetts to St. Louis.

  • Can I find deals for business class flights from Massachusetts to St. Louis?

    Yes. Cheapflights offers flight deals from Massachusetts to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Massachusetts to St. Louis?

    Currently, January is the cheapest month in which you can book a flight from Massachusetts to St. Louis (average of $189). Flying from Massachusetts to St. Louis in April is currently the most expensive (average of $327). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Massachusetts to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Newark to St. Louis flights
John F Kennedy Intl to Kansas City flights
LaGuardia to St. Louis flights
LaGuardia to Kansas City flights
Dallas/Fort Worth to Kansas City flights
Denver to St. Louis flights
Los Angeles to Kansas City flights
O'Hare Intl to Kansas City flights
Hobby to Kansas City flights
Dallas/Fort Worth to St. Louis flights
John F Kennedy Intl to St. Louis flights
Denver to Kansas City flights
Dulles Intl to St. Louis flights
Boston to Kansas City flights
Newark to Kansas City flights
Los Angeles to St. Louis flights
Boston to St. Louis flights
Minneapolis to St. Louis flights
Baltimore to St. Louis flights
George Bush Intcntl to Kansas City flights
Dulles Intl to Kansas City flights
San Francisco to Kansas City flights
Atlanta to Kansas City flights
Atlanta to St. Louis flights
Seattle to Kansas City flights
O'Hare Intl to St. Louis flights
San Francisco to St. Louis flights
Orlando to St. Louis flights
Baltimore to Kansas City flights
Seattle to St. Louis flights
Hobby to St. Louis flights
Reagan-National to St. Louis flights
Reagan-National to Kansas City flights
Minneapolis to Kansas City flights
Sky Harbor Intl to Kansas City flights
Sky Harbor Intl to St. Louis flights
Detroit to St. Louis flights
George Bush Intcntl to St. Louis flights
Philadelphia to St. Louis flights
Love Field to Kansas City flights
Raleigh to Kansas City flights
Detroit to Kansas City flights
Philadelphia to Kansas City flights
Austin to St. Louis flights
Orlando to Kansas City flights
Midway to Kansas City flights
San Diego to Kansas City flights
Salt Lake City to St. Louis flights
Miami to Kansas City flights
Tampa to St. Louis flights

Top 7 airlines flying from Massachusetts to St. Louis

Discover the top 7 airlines that operate flights from Massachusetts to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$63Average$226FlexibilityNo cancel feeOn-time65%
FrontierCheapest$90Average$272FlexibilityNo cancel feeOn-time62%
DeltaCheapest$154Average$316FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$289Average$455FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$292Average$424FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$320Average$467FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$385Average$450FlexibilityNo cancel feeOn-time62%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.