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$73+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — STL
nov. 27 — dic. 41
jue. 11/27
jue. 12/4
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 octubre 28, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/152:07 pmBDL - STL
1 stop9h 26mMultiple Airlines
vie. 12/196:58 pmSTL - BDL
1 stop18h 51mMultiple Airlines
Deal found 10/26$241
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
dom. 12/142:03 pmBDL - STL
2 stops20h 49mMultiple Airlines
mar. 12/163:30 pmSTL - BDL
1 stop22h 19mMultiple Airlines
Deal found 10/28$262
This Southwest deal was found by Cheapflights users on 10/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/133:35 pmALB - STL
1 stop4h 55mSouthwest
sáb. 1/175:30 amSTL - ALB
1 stop9h 05mSouthwest
Deal found 10/26$269
This Southwest deal was found by Cheapflights users on 10/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/178:30 amALB - STL
2 stops8h 50mSouthwest
dom. 1/182:35 pmSTL - ALB
1 stop6h 30mSouthwest
Deal found 10/26$274
This Southwest deal was found by Cheapflights users on 10/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/135:20 amALB - STL
1 stop5h 20mSouthwest
jue. 12/182:30 pmSTL - ALB
1 stop6h 40mSouthwest
Deal found 10/27$277
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
mié. 12/178:05 amBDL - STL
1 stop15h 28mMultiple Airlines
dom. 12/2110:57 amSTL - BDL
2 stops27h 32mMultiple Airlines
Deal found 10/28$278
This Southwest deal was found by Cheapflights users on 10/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/255:10 amALB - STL
1 stop5h 00mSouthwest
mar. 12/29:10 amSTL - ALB
1 stop5h 20mSouthwest
Deal found 10/26$307
This Delta deal was found by Cheapflights users on 10/28. 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.
jue. 12/44:56 pmBDL - STL
1 stop7h 46mDelta
mié. 12/107:05 amSTL - BDL
1 stop5h 12mDelta
Deal found 10/28$313
This Delta deal was found by Cheapflights users on 10/28. 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.
sáb. 12/65:42 pmBDL - STL
1 stop5h 15mDelta
lun. 12/86:05 pmSTL - BDL
1 stop4h 33mDelta
Deal found 10/28$315
This Kiwi.com deal was found by Cheapflights users on 10/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/173:07 pmBDL - STL
2 stops19h 00mFrontier
vie. 11/214:13 pmSTL - BDL
1 stop26h 19mFrontier
Deal found 10/26$317
This Southwest deal was found by Cheapflights users on 10/28. 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.
jue. 12/45:40 pmBDL - STL
1 stop5h 40mSouthwest
mié. 12/108:25 amSTL - BDL
2 stops6h 50mSouthwest
Deal found 10/28$318
This Southwest deal was found by Cheapflights users on 10/28. 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.
sáb. 12/612:50 pmBDL - STL
2 stops9h 10mSouthwest
lun. 12/81:50 pmSTL - BDL
1 stop6h 35mSouthwest
Deal found 10/28$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 octubre 28, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$241
(Kiwi.com)

One-way from

$73
(Kiwi.com)

Popular in

October

Cheapest in

August

Average price

$512

Good round-trip deal

$360 or less

Good one-way deal

$206 or less
Provider with most accurate pricing for Boston Logan Intl-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Lambert-St Louis flights.
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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. 1% potential increase in price ($7 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 October 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.
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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 octubre 28, 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

lun. 12/15

6:36 pm-10:33 pm

2 stops28h 57m

Lambert-St Louis

vie. 12/19

6:58 pm-2:49 pm

1 stop18h 51m

$242

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

sáb. 12/13

3:35 pm-7:30 pm

1 stop4h 55m

Lambert-St Louis

sáb. 1/17

5:30 am-3:35 pm

1 stop9h 05m

$269

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

mar. 12/23

8:15 pm-12:05 am

1 stop4h 50m

Lambert-St Louis

jue. 12/25

9:45 am-3:30 pm

1 stop4h 45m

$269

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

mié. 12/17

8:30 am-4:20 pm

2 stops8h 50m

Lambert-St Louis

dom. 1/18

2:35 pm-10:05 pm

1 stop6h 30m

$274

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

sáb. 12/13

5:20 am-9:40 am

1 stop5h 20m

Lambert-St Louis

jue. 12/18

2:30 pm-10:10 pm

1 stop6h 40m

$277

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

sáb. 12/6

3:35 pm-7:30 pm

1 stop4h 55m

Lambert-St Louis

mar. 12/9

10:15 am-4:15 pm

1 stop5h 00m

$277

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

mié. 2/18

2:20 pm-7:14 pm

1 stop5h 54m

Lambert-St Louis

mié. 2/25

7:30 am-1:18 pm

1 stop4h 48m

$289

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

vie. 2/20

5:00 pm-8:39 pm

1 stop4h 39m

Lambert-St Louis

mié. 2/25

5:45 pm-11:39 pm

1 stop4h 54m

$289

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

mar. 11/25

5:10 am-9:10 am

1 stop5h 00m

Lambert-St Louis

mar. 12/2

9:10 am-3:30 pm

1 stop5h 20m

$307

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

jue. 12/4

4:56 pm-11:42 pm

1 stop7h 46m

Lambert-St Louis

mié. 12/10

7:05 am-1:17 pm

1 stop5h 12m

$313

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 54 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 $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 octubre 28, 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 23% 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 October 26, 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.

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 51 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?

    Southwest and Delta can get you from Massachusetts to St. Louis in just under 4h 55m. Your travel time can differ by up to 59m. 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 $100. Southwest flights start at $131 while deals on United Airlines start at $136 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 (98%), Envoy Air (86%) and American Airlines (84%).

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

    The cheapest flight price from Massachusetts to St. Louis is $118. On average you can expect to pay $355. The most popular route, (Boston Logan Intl - Lambert-St Louis), can usually be booked for $192.

  • 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 $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
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 octubre 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$83Average$186FlexibilityNo cancel feeOn-time65%
FrontierCheapest$110Average$208FlexibilityNo cancel feeOn-time62%
DeltaCheapest$216Average$294FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$261Average$406FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$297Average$456FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$320Average$466FlexibilityNo cancel feeOn-time63%

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