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St. Louis

$59+ 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 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — STL
Dec 12 — Dec 191
Fri 12/12
Fri 12/19
1 adult, Economy
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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 November 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Mon 12/82:07 pmBDL - STL
1 stop9h 26mFrontier
Thu 12/1112:04 pmSTL - BDL
1 stop22h 04mFrontier
Deal found 11/12$193
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 12/1812:05 pmBDL - STL
2 stops35h 28mMultiple Airlines
Tue 1/135:06 pmSTL - BDL
1 stop20h 59mMultiple Airlines
Deal found 11/11$207
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 12/188:12 pmBDL - STL
1 stop24h 30mFrontier
Tue 1/135:06 pmSTL - BDL
2 stops41h 10mFrontier
Deal found 11/10$208
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Wed 12/108:05 amBDL - STL
1 stop15h 28mMultiple Airlines
Thu 12/1112:04 pmSTL - BDL
1 stop22h 04mMultiple Airlines
Deal found 11/12$230
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 12/108:05 amBDL - STL
1 stop15h 28mMultiple Airlines
Wed 12/173:30 pmSTL - BDL
1 stop26h 47mMultiple Airlines
Deal found 11/11$247
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 12/112:01 pmBDL - STL
2 stops9h 32mMultiple Airlines
Sun 12/143:30 pmSTL - BDL
1 stop20h 42mMultiple Airlines
Deal found 11/11$280
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 12/41:25 pmALB - STL
2 stops20h 34mMultiple Airlines
Sat 12/63:30 pmSTL - ALB
1 stop16h 39mMultiple Airlines
Deal found 11/11$282
This United Airlines deal was found by Cheapflights users on 11/10. 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.
Thu 12/46:30 pmALB - STL
1 stop5h 15mUnited Airlines
Sat 12/61:00 pmSTL - ALB
1 stop7h 14mUnited Airlines
Deal found 11/10$295
This Kiwi.com deal was found by Cheapflights users on 11/9. 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 12/169:05 amBDL - STL
2 stops38h 28mMultiple Airlines
Sat 1/245:11 pmSTL - BDL
1 stop25h 11mMultiple Airlines
Deal found 11/9$298
This Delta deal was found by Cheapflights users on 11/9. 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.
Tue 12/165:10 pmBDL - STL
1 stop4h 37mDelta
Sat 1/249:59 amSTL - BDL
1 stop5h 11mDelta
Deal found 11/9$317
This CheapOair deal was found by Cheapflights users on 11/11. 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 12/115:45 amBOS - STL
1 stop9h 07mSpirit Airlines
Sun 12/142:47 pmSTL - BOS
1 stop8h 09mSpirit Airlines
Deal found 11/11$318
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 12/39:54 pmBOS - STL
1 stop14h 13mMultiple Airlines
Mon 12/2910:40 amSTL - BOS
1 stop22h 21mMultiple Airlines
Deal found 11/10$320

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 November 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$193
(Kiwi.com)

One-way from

$59
(Kiwi.com)

Popular in

April

Cheapest in

August

Average price

$468

Good round-trip deal

$348 or less

Good one-way deal

$206 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. 8% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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 November 12, 2025.
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

Thu 12/18

12:05 pm-10:33 pm

2 stops35h 28m

Lambert-St Louis

Tue 1/13

5:06 pm-3:05 pm

1 stop20h 59m

$207

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Thu 12/18

8:12 pm-7:42 pm

1 stop24h 30m

Lambert-St Louis

Tue 1/13

5:06 pm-11:16 am

2 stops41h 10m

$208

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Wed 1/28

8:05 am-11:33 pm

1 stop16h 28m

Lambert-St Louis

Sun 2/1

4:45 pm-11:16 pm

2 stops29h 31m

$223

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Wed 12/10

8:05 am-10:33 pm

1 stop15h 28m

Lambert-St Louis

Thu 12/11

12:04 pm-11:08 am

1 stop22h 04m

$230

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Wed 2/18

5:30 am-9:38 am

1 stop5h 08m

Lambert-St Louis

Sat 2/21

5:54 pm-11:41 pm

1 stop4h 47m

$247

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Wed 12/10

8:05 am-10:33 pm

1 stop15h 28m

Lambert-St Louis

Wed 12/17

3:30 pm-7:17 pm

1 stop26h 47m

$247

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Sat 1/17

12:29 pm-4:38 pm

1 stop5h 09m

Lambert-St Louis

Tue 1/20

6:25 am-2:00 pm

1 stop6h 35m

$277

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Sat 1/17

2:40 pm-9:13 pm

2 stops7h 33m

Lambert-St Louis

Tue 1/20

6:30 am-2:31 pm

1 stop7h 01m

$282

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Thu 12/4

1:25 pm-8:59 am

2 stops20h 34m

Lambert-St Louis

Sat 12/6

3:30 pm-9:09 am

1 stop16h 39m

$290

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Sun 2/15

5:30 am-9:38 am

1 stop5h 08m

Lambert-St Louis

Mon 2/23

3:38 pm-11:50 pm

1 stop7h 12m

$294

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 57 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 November 12, 2025.

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 22% versus a flight in the afternoon.

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 November 2, 2025.

Travelers seeking maximum savings on their Massachusetts to St. Louis flight should consider departing on Wednesday at noon 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 November 12, 2025.

The most flights from USMA to STL are scheduled on a Monday (9 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 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 49 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 7h 33m. Your travel time can differ by up to 16h 57m. 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 $72. American Airlines flights start at $139 while deals on Southwest start at $162 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 (99%), Republic Airways (79%) and British Airways (76%).

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

    The cheapest flight price from Massachusetts to St. Louis is $95. On average you can expect to pay $366. The most popular route, (Boston Logan Intl - Lambert-St Louis), can usually be booked for $152.

  • 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
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
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 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 November 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$83Average$186FlexibilityNo cancel feeOn-time65%
FrontierCheapest$110Average$208FlexibilityNo cancel feeOn-time62%
DeltaCheapest$216Average$301FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$292Average$406FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$297Average$455FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$322Average$467FlexibilityNo cancel feeOn-time63%

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