St. Louis

$75+ 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
Mar 19 — Mar 261
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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 March 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$293
(Delta)

One-way from

$75
(CheapOair)

Popular in

March

Cheapest in

September

Average price

$488

Good round-trip deal

$408 or less

Good one-way deal

$198 or less
Provider with most accurate pricing for Boston Logan Intl-Lambert-St Louis flight deals.
Provider most trusted by Cheapflights users for Boston Logan Intl-Lambert-St Louis flights.
From Massachusetts to Lambert-St Louis
One-way flight from Massachusetts to Lambert-St Louis
Highest demand for flights based on searches. 6% potential increase in price ($28 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Average for round-trip flights in March 2025
Price to beat on a round-trip flight from Massachusetts to Lambert-St Louis.
Price to beat on a one-way flight from Massachusetts to Lambert-St Louis.

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 March 14, 2025.

This Delta deal was found by Cheapflights users on 3/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/76:52 pmBDL - STL
1 stop5h 37mDelta
Thu 4/106:00 amSTL - BDL
1 stop6h 16mDelta
Deal found 3/13$293
This American Airlines deal was found by Cheapflights users on 3/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/16:00 amALB - STL
1 stop4h 52mAmerican Airlines
Thu 5/85:12 amSTL - ALB
1 stop4h 58mAmerican Airlines
Deal found 3/13$293
This Southwest deal was found by Cheapflights users on 3/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/175:50 pmBDL - STL
1 stop5h 00mSouthwest
Tue 5/205:00 pmSTL - BDL
1 stop5h 15mSouthwest
Deal found 3/12$295
This Delta deal was found by Cheapflights users on 3/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/812:10 pmALB - STL
1 stop6h 51mDelta
Sat 5/105:00 pmSTL - ALB
1 stop6h 01mDelta
Deal found 3/12$295
This United Airlines deal was found by Cheapflights users on 3/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/86:15 amBDL - STL
1 stop5h 48mUnited Airlines
Thu 4/106:30 amSTL - BDL
2 stops6h 30mUnited Airlines
Deal found 3/13$298
This CheapOair deal was found by Cheapflights users on 3/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/95:19 pmBDL - STL
1 stop7h 27mFrontier
Sun 4/134:57 pmSTL - BDL
1 stop23h 38mFrontier
Deal found 3/13$300
This American Airlines deal was found by Cheapflights users on 3/12. 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 4/77:15 pmBDL - STL
1 stop5h 18mAmerican Airlines
Fri 4/117:19 amSTL - BDL
1 stop7h 05mAmerican Airlines
Deal found 3/12$312
This United deal was found by Cheapflights users on 3/13. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/189:35 amBOS - STL
1 stop6h 55mUnited Airlines
Fri 6/207:20 amSTL - BOS
1 stop7h 05mUnited Airlines
Deal found 3/13$317
This Mytrip deal was found by Cheapflights users on 3/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/105:25 amBOS - STL
3 stops31h 20mMultiple Airlines
Thu 4/179:50 amSTL - BOS
2 stops7h 53mMultiple Airlines
Deal found 3/13$319
This Delta deal was found by Cheapflights users on 3/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/295:30 amBOS - STL
1 stop5h 06mDelta
Sat 4/510:30 amSTL - BOS
1 stop4h 51mDelta
Deal found 3/13$329
This Southwest deal was found by Cheapflights users on 3/13. 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.
Thu 4/36:55 amBOS - STL
Nonstop3h 05mSouthwest
Mon 4/78:50 pmSTL - BOS
Nonstop2h 30mSouthwest
Deal found 3/13$331
This American Airlines deal was found by Cheapflights users on 3/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/315:00 pmBOS - STL
1 stop6h 29mAmerican Airlines
Sat 4/59:52 amSTL - BOS
1 stop7h 45mAmerican Airlines
Deal found 3/13$337

Find flights from Massachusetts to St. Louis within your budget

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 March 14, 2025.

Fly from

Massachusetts

Fly to

St. Louis

Route

Depart

Return

Price

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Mon 4/7

6:52 pm-11:29 pm

1 stop5h 37m

Lambert-St Louis

Thu 4/10

6:00 am-1:16 pm

1 stop6h 16m

$293

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Thu 5/1

6:00 am-9:52 am

1 stop4h 52m

Lambert-St Louis

Thu 5/8

5:12 am-11:10 am

1 stop4h 58m

$293

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Sat 5/17

5:50 pm-9:50 pm

1 stop5h 00m

Lambert-St Louis

Tue 5/20

5:00 pm-11:15 pm

1 stop5h 15m

$295

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Tue 4/8

6:15 am-11:03 am

1 stop5h 48m

Lambert-St Louis

Thu 4/10

6:30 am-2:00 pm

2 stops6h 30m

$298

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Wed 4/9

5:19 pm-11:46 pm

1 stop7h 27m

Lambert-St Louis

Sun 4/13

4:57 pm-5:35 pm

1 stop23h 38m

$300

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Mon 4/7

7:15 pm-11:33 pm

1 stop5h 18m

Lambert-St Louis

Fri 4/11

7:19 am-3:24 pm

1 stop7h 05m

$312

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Thu 4/10

5:25 am-11:45 am

3 stops31h 20m

Lambert-St Louis

Thu 4/17

9:50 am-6:43 pm

2 stops7h 53m

$319

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 4/4

7:00 am-3:47 pm

2 stops9h 47m

Lambert-St Louis

Tue 4/8

6:30 am-12:48 pm

1 stop5h 18m

$322

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Sat 3/29

5:30 am-9:36 am

1 stop5h 06m

Lambert-St Louis

Sat 4/5

10:30 am-4:21 pm

1 stop4h 51m

$329

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Mon 4/7

6:57 pm-11:29 pm

1 stop5h 32m

Lambert-St Louis

Sun 4/13

6:00 am-11:30 am

1 stop4h 30m

$330

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 38 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.

Travel insights for flights from Massachusetts to St. Louis

Get recent, data-driven insights about flights from Massachusetts to St. Louis including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Massachusetts to St. Louis (average of $311). Flying from Massachusetts to St. Louis in March is currently the most expensive (average of $356). 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 March 14, 2025.

When flying from Massachusetts to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated March 14, 2025.
To help decide which airline to fly from Massachusetts to St. Louis, see what other customers have to say about Southwest, Alaska Airlines and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.7

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.7

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.7

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

8.0
Very good

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.7

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.7

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.7

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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?

  • 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 $75. Delta flights start at $109 while deals on Spirit Airlines start at $113 one-way.

  • What are the most popular routes 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 (100%), Southwest (76%) and Qatar Airways (76%).

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

    The cheapest flight price from Massachusetts to St. Louis is $138. On average you can expect to pay $385. The most popular route, (Boston Logan Intl - Lambert-St Louis), can usually be booked for $143.

  • 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, August is the cheapest month in which you can book a flight from Massachusetts to St. Louis (average of $311). Flying from Massachusetts to St. Louis in March is currently the most expensive (average of $356). 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 Massachusetts?

Book flights to Massachusetts if you plan to visit one of these locations
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

Browse thousands of different options on Cheapflights for your next trip

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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.

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 March 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$107Average$238FlexibilityNo cancel feeOn-time65%
FrontierCheapest$113Average$206FlexibilityNo cancel feeOn-time62%
DeltaCheapest$196Average$365FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$259Average$470FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$306Average$443FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$318Average$445FlexibilityNo cancel feeOn-time63%
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