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St. Louis

$69+ 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 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — STL
Feb 2 — Feb 91
Mon 2/2
Mon 2/9
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 3, 2026.

This Kiwi.com deal was found by Cheapflights users on 12/31. 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 pmBDL - STL
2 stops10h 37mMultiple Airlines
Mon 2/95:42 pmSTL - BDL
1 stop16h 42mMultiple Airlines
Deal found 12/31$147
This Frontier deal was found by Cheapflights users on 1/2. 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.
Tue 3/310:19 amBDL - STL
1 stop13h 08mFrontier
Mon 3/97:52 amSTL - BDL
1 stop10h 21mFrontier
Deal found 1/2$165
This Kiwi.com deal was found by Cheapflights users on 1/1. 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 1/267:13 pmBDL - STL
2 stops29h 20mMultiple Airlines
Tue 2/35:42 pmSTL - BDL
1 stop20h 23mMultiple Airlines
Deal found 1/1$171
This Kiwi.com deal was found by Cheapflights users on 1/1. 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 1/288:05 amBDL - STL
1 stop16h 28mMultiple Airlines
Fri 1/305:42 pmSTL - BDL
1 stop24h 24mMultiple Airlines
Deal found 1/1$174
This Frontier deal was found by Cheapflights users on 1/2. 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 amBDL - STL
1 stop13h 08mFrontier
Mon 3/97:52 amSTL - BDL
1 stop10h 21mFrontier
Deal found 1/2$182
This Kiwi.com deal was found by Cheapflights users on 1/1. 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 1/267:13 pmBDL - STL
2 stops29h 20mMultiple Airlines
Wed 2/45:42 pmSTL - BDL
1 stop24h 54mMultiple Airlines
Deal found 1/1$183
This Kiwi.com deal was found by Cheapflights users on 1/1. 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 1/307:13 pmBDL - STL
2 stops16h 58mMultiple Airlines
Tue 2/35:42 pmSTL - BDL
1 stop20h 23mMultiple Airlines
Deal found 1/1$189
This Kiwi.com deal was found by Cheapflights users on 1/1. 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 1/288:05 amBDL - STL
1 stop16h 28mMultiple Airlines
Mon 2/210:16 amSTL - BDL
2 stops12h 00mMultiple Airlines
Deal found 1/1$191
This Kiwi.com deal was found by Cheapflights users on 1/2. 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 3/310:19 amBDL - STL
1 stop13h 08mFrontier
Wed 3/114:51 pmSTL - BDL
1 stop25h 22mFrontier
Deal found 1/2$192
This Kiwi.com deal was found by Cheapflights users on 1/1. 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 1/288:05 amBDL - STL
1 stop16h 28mMultiple Airlines
Sun 2/15:42 pmSTL - BDL
2 stops23h 51mMultiple Airlines
Deal found 1/1$193
This Kiwi.com deal was found by Cheapflights users on 1/1. 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 1/292:04 pmBDL - STL
2 stops10h 29mMultiple Airlines
Fri 1/305:42 pmSTL - BDL
1 stop24h 24mMultiple Airlines
Deal found 1/1$195
This Travelocity deal was found by Cheapflights users on 1/1. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/298:31 pmBDL - STL
1 stop14h 52mFrontier
Sun 2/19:09 amSTL - BDL
1 stop9h 27mFrontier
Deal found 1/1$198

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 3, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$165
(Frontier)

One-way from

$69
(Kiwi.com)

Popular in

April

Cheapest in

August

Average price

$387

Good round-trip deal

$382 or less

Good one-way deal

$220 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. 7% potential increase in price ($37 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

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 3, 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

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Sun 1/18

1:40 pm-6:34 pm

1 stop5h 54m

Lambert-St Louis

Tue 1/20

5:59 pm-11:38 pm

1 stop4h 39m

$235

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Sun 1/18

5:45 am-12:29 pm

2 stops7h 44m

Lambert-St Louis

Tue 1/20

3:11 pm-9:23 pm

1 stop5h 12m

$275

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Sat 1/31

4:59 pm-8:43 pm

1 stop4h 44m

Lambert-St Louis

Sat 2/7

6:35 am-11:53 am

1 stop4h 18m

$277

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Sat 1/31

4:20 pm-9:13 pm

1 stop5h 53m

Lambert-St Louis

Sat 2/7

8:05 am-2:31 pm

1 stop5h 26m

$277

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Sat 1/17

4:20 pm-9:13 pm

1 stop5h 53m

Lambert-St Louis

Sun 1/18

8:05 am-2:31 pm

1 stop5h 26m

$305

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Wed 2/18

5:50 pm-11:36 pm

1 stop6h 46m

Lambert-St Louis

Fri 2/20

6:35 am-11:52 am

1 stop4h 17m

$311

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Tue 3/10

6:00 am-11:48 am

1 stop6h 48m

Lambert-St Louis

Tue 3/10

5:25 pm-11:59 pm

1 stop5h 34m

$317

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Mon 2/23

12:51 pm-5:42 pm

1 stop5h 51m

Lambert-St Louis

Mon 3/2

6:30 am-1:46 pm

1 stop6h 16m

$327

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Wed 2/18

5:04 pm-8:43 pm

1 stop4h 39m

Lambert-St Louis

Sun 2/22

6:35 am-12:11 pm

1 stop4h 36m

$328

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Wed 2/25

5:30 am-9:32 am

1 stop5h 02m

Lambert-St Louis

Sun 3/1

6:35 am-11:52 am

1 stop4h 17m

$332

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/3

Showing 1-10 of 50 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, December is the cheapest month in which you can book a flight from Massachusetts to St. Louis (average of $107). 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 3, 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 3, 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 58 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?

    American Airlines, United Airlines, and Delta can get you from Massachusetts to St. Louis in just under 4h 44m. Your travel time can differ by up to 3h. 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 $132.

  • 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, December is the cheapest month in which you can book a flight from Massachusetts to St. Louis (average of $107). 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

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Alternative routes for Massachusetts to St. Louis

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Top 6 airlines flying from Massachusetts to St. Louis

Discover the top 6 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 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$71Average$236FlexibilityNo cancel feeOn-time65%
FrontierCheapest$90Average$283FlexibilityNo cancel feeOn-time62%
DeltaCheapest$216Average$308FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$290Average$453FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$292Average$424FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$321Average$467FlexibilityNo cancel feeOn-time63%

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