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St. Louis

$61+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — STL
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap 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 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Tue 2/249:49 am
BDL
-
STL
2 stops22h 02m
Frontier
Tue 3/33:49 pm
STL
-
BDL
1 stop16h 34m
Frontier
Deal found 1/27$164
This Expedia deal was found by Cheapflights users on 1/27. 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.
Wed 2/1810:19 am
BDL
-
STL
1 stop13h 08m
Frontier
Thu 3/194:51 pm
STL
-
BDL
1 stop25h 22m
Frontier
Deal found 1/27$251
This CheapOair deal was found by Cheapflights users on 1/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/148:08 pm
BDL
-
STL
1 stop28h 11m
Frontier
Sat 5/164:55 pm
STL
-
BDL
1 stop25h 22m
Frontier
Deal found 1/26$253
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Mon 3/210:52 am
BDL
-
STL
1 stop14h 07m
Frontier
Wed 3/48:17 pm
STL
-
BDL
1 stop16h 45m
Frontier
Deal found 1/28$269
This Delta deal was found by Cheapflights users on 1/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/36:00 am
BDL
-
STL
1 stop6h 09m
Delta
Sat 4/116:32 am
STL
-
BDL
1 stop4h 32m
Delta
Deal found 1/28$297
This Southwest deal was found by Cheapflights users on 1/28. 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.
Wed 3/255:50 pm
BDL
-
STL
1 stop5h 50m
Southwest
Fri 3/274:25 pm
STL
-
BDL
2 stops6h 25m
Southwest
Deal found 1/28$302
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/117:20 am
BDL
-
STL
2 stops16h 07m
Multiple Airlines
Sun 2/153:49 pm
STL
-
BDL
1 stop17h 18m
Multiple Airlines
Deal found 1/27$304
This United Airlines deal was found by Cheapflights users on 1/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/23:00 pm
BDL
-
STL
2 stops9h 59m
United Airlines
Wed 3/46:25 am
STL
-
BDL
2 stops6h 29m
United Airlines
Deal found 1/28$307
This American Airlines deal was found by Cheapflights users on 1/28. 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 3/26:16 pm
ALB
-
STL
1 stop6h 32m
American Airlines
Wed 3/43:49 pm
STL
-
ALB
1 stop6h 55m
American Airlines
Deal found 1/28$310
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Sat 2/2110:48 am
BOS
-
STL
1 stop11h 24m
American Airlines
Wed 2/255:50 pm
STL
-
BOS
Nonstop2h 40m
American Airlines
Deal found 1/27$316
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Tue 3/319:35 am
BOS
-
STL
1 stop14h 44m
Multiple Airlines
Tue 4/711:21 am
STL
-
BOS
2 stops11h 38m
Multiple Airlines
Deal found 1/27$320
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Mon 4/64:23 pm
BOS
-
STL
1 stop8h 02m
Multiple Airlines
Tue 4/74:54 pm
STL
-
BOS
2 stops21h 34m
Multiple Airlines
Deal found 1/27$324

Find 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 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$164
(Kiwi.com)

One-way from

$61
(Trip.com)

Popular in

April

Cheapest in

August

Average price

$441

Good round-trip deal

$376 or less

Good one-way deal

$216 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 ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 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

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 29, 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 2/18

10:19 am-10:27 pm

1 stop13h 08m

Lambert-St Louis

Thu 3/19

4:51 pm-7:13 pm

1 stop25h 22m

$251

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Thu 5/14

8:08 pm-11:19 pm

1 stop28h 11m

Lambert-St Louis

Sat 5/16

4:55 pm-7:17 pm

1 stop25h 22m

$263

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Fri 4/3

6:00 am-11:09 am

1 stop6h 09m

Lambert-St Louis

Sat 4/11

6:32 am-12:04 pm

1 stop4h 32m

$297

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Thu 4/23

5:05 pm-10:56 pm

1 stop6h 51m

Lambert-St Louis

Wed 4/29

9:10 am-5:32 pm

1 stop7h 22m

$297

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Wed 3/25

12:20 pm-6:00 pm

1 stop6h 40m

Lambert-St Louis

Fri 3/27

10:50 am-4:10 pm

1 stop4h 20m

$297

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Sat 5/2

6:00 am-11:56 am

1 stop6h 56m

Lambert-St Louis

Mon 5/4

4:41 pm-10:16 pm

1 stop4h 35m

$297

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Sat 3/21

6:00 am-11:48 am

1 stop6h 48m

Lambert-St Louis

Sun 3/29

6:29 am-1:57 pm

1 stop6h 28m

$297

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Thu 4/2

6:00 am-11:09 am

1 stop6h 09m

Lambert-St Louis

Sun 4/5

6:32 am-12:04 pm

1 stop4h 32m

$297

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Fri 4/24

6:00 am-10:45 am

1 stop5h 45m

Lambert-St Louis

Mon 4/27

11:15 am-11:59 pm

2 stops11h 44m

$302

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Tue 2/24

3:00 pm-9:05 pm

2 stops7h 05m

Lambert-St Louis

Tue 3/3

7:41 am-6:49 pm

2 stops10h 08m

$318

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 60 results
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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 $328). 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 29, 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 6% 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 24, 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.

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, Delta, and United Airlines can get you from Massachusetts to St. Louis in just under 6h 09m. Your travel time can differ by up to 6h 59m. Massachusetts and St. Louis are separated by a distance of 954 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 (88%), Republic Airways (84%) 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 $609. The most popular route, (Boston Logan Intl - Lambert-St Louis), can usually be booked for $158.

  • 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 $328). 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

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Alternative routes for Massachusetts to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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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 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$63Average$207FlexibilityNo cancel feeOn-time65%
FrontierCheapest$90Average$270FlexibilityNo cancel feeOn-time62%
DeltaCheapest$154Average$324FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$454FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$292Average$424FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$318Average$470FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$385Average$430FlexibilityNo cancel feeOn-time62%

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