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$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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — STL
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
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Cheap flight deals from Massachusetts to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Massachusetts (USMA) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$114
(Mytrip)

One-way from

$61
(Frontier)

Popular in

March

Cheapest in

September

Average price

$421

Good round-trip deal

$421 or less

Good one-way deal

$211 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
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One-way flight from Massachusetts to Lambert-St Louis
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Highest demand for flights based on searches. 4% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Price to beat on a round-trip flight from Massachusetts to Lambert-St Louis.
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Price to beat on a one-way flight from Massachusetts to Lambert-St Louis.
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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 January 30, 2025.

This Mytrip deal was found by Cheapflights users on 1/29. 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.
Tue 2/251:31 pmBDL - STL
1 stop11h 12mFrontier
Tue 3/45:20 pmSTL - BDL
1 stop16h 47mFrontier
Deal found 1/29$114
This Booking.com deal was found by Cheapflights users on 1/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/258:12 pmBDL - STL
1 stop28h 52mMultiple Airlines
Tue 4/297:17 pmSTL - BDL
1 stop13h 23mMultiple Airlines
Deal found 1/29$168
This CheapOair deal was found by Cheapflights users on 1/29. 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.
Mon 2/2411:17 amBDL - STL
1 stop28h 25mSpirit Airlines
Sun 3/24:00 pmSTL - BDL
1 stop17h 22mSpirit Airlines
Deal found 1/29$180
This CheapOair deal was found by Cheapflights users on 1/30. 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 3/56:00 amBOS - STL
1 stop18h 43mMultiple Airlines
Sat 3/810:24 amSTL - BOS
1 stop21h 35mMultiple Airlines
Deal found 1/30$224
This American Airlines deal was found by Cheapflights users on 1/29. 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.
Tue 2/46:30 amBOS - STL
Nonstop3h 24mAmerican Airlines
Tue 2/412:00 pmSTL - BOS
1 stop9h 12mAmerican Airlines
Deal found 1/29$227
This Mytrip deal was found by Cheapflights users on 1/30. 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 2/205:40 amBOS - STL
1 stop10h 02mSpirit Airlines
Sun 2/234:00 pmSTL - BOS
2 stops22h 20mSpirit Airlines
Deal found 1/30$228
This CheapOair deal was found by Cheapflights users on 1/30. 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.
Fri 2/76:00 amBOS - STL
1 stop18h 31mFrontier
Mon 2/105:05 pmSTL - BOS
1 stop6h 22mFrontier
Deal found 1/30$234
This Delta deal was found by Cheapflights users on 1/30. 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 3/148:50 amBOS - STL
1 stop5h 18mDelta
Tue 3/186:10 amSTL - BOS
1 stop7h 33mDelta
Deal found 1/30$247
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 3/264:35 pmBDL - STL
1 stop6h 15mSouthwest
Tue 4/16:00 pmSTL - BDL
1 stop4h 00mSouthwest
Deal found 1/28$252
This Delta deal was found by Cheapflights users on 1/29. 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 2/276:00 amBDL - STL
1 stop5h 59mDelta
Mon 3/35:50 pmSTL - BDL
1 stop4h 13mDelta
Deal found 1/29$257
This United Airlines deal was found by Cheapflights users on 1/30. 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 4/79:30 amBOS - STL
1 stop6h 12mUnited Airlines
Tue 4/89:39 amSTL - BOS
2 stops6h 49mUnited Airlines
Deal found 1/30$264
This Southwest deal was found by Cheapflights users on 1/30. 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.
Tue 4/82:30 pmALB - STL
1 stop6h 20mSouthwest
Thu 4/105:45 amSTL - ALB
1 stop3h 55mSouthwest
Deal found 1/30$292

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 January 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Tue 2/25

1:31 pm-11:43 pm

1 stop11h 12m

Lambert-St Louis

Tue 3/4

5:20 pm-11:07 am

1 stop16h 47m

$114

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Fri 4/25

8:12 pm-12:04 am

1 stop28h 52m

Lambert-St Louis

Tue 4/29

7:17 pm-9:40 am

1 stop13h 23m

$168

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Mon 2/24

11:17 am-2:42 pm

1 stop28h 25m

Lambert-St Louis

Sun 3/2

4:00 pm-10:22 am

1 stop17h 22m

$180

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 3/5

6:00 am-11:43 pm

1 stop18h 43m

Lambert-St Louis

Sat 3/8

10:24 am-8:59 am

1 stop21h 35m

$224

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Thu 2/20

5:40 am-2:42 pm

1 stop10h 02m

Lambert-St Louis

Sun 2/23

4:00 pm-3:20 pm

2 stops22h 20m

$228

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Sun 2/9

6:00 am-11:31 pm

1 stop18h 31m

Lambert-St Louis

Sun 2/16

5:20 pm-12:44 am

1 stop6h 24m

$230

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Thu 2/27

11:00 am-4:49 pm

1 stop6h 49m

Lambert-St Louis

Mon 3/17

7:10 pm-1:05 am

1 stop4h 55m

$247

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Wed 3/26

4:35 pm-9:50 pm

1 stop6h 15m

Lambert-St Louis

Tue 4/1

6:00 pm-11:00 pm

1 stop4h 00m

$252

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 2/28

10:52 am-3:40 pm

1 stop5h 48m

Lambert-St Louis

Mon 3/3

3:32 pm-11:59 pm

2 stops7h 27m

$252

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Thu 2/27

6:00 am-10:59 am

1 stop5h 59m

Lambert-St Louis

Mon 3/3

5:50 pm-11:03 pm

1 stop4h 13m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

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 January 30, 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 January 30, 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.
Southwest
8.1
Very good
4,585 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,585 reviews
Southwest
8.1
Very good
4,585 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,686 reviews
Southwest
8.1
Very good
4,585 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,450 reviews
Southwest
8.1
Very good
4,585 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,906 reviews
Southwest
8.1
Very good
4,585 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,585 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 5 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • 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 $61. Spirit Airlines flights start at $63 while deals on United Airlines start at $109 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 Qatar Airways (90%), Republic Airways (88%) and Southwest (88%).

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

    The cheapest flight price from Massachusetts to St. Louis is $162. On average you can expect to pay $388. The most popular route, (Boston Logan Intl - Lambert-St Louis), can usually be booked for $149.

  • 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

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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 January 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$107Average$238FlexibilityNo cancel feeOn-time65%
FrontierCheapest$113Average$202FlexibilityNo cancel feeOn-time62%
DeltaCheapest$196Average$374FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$257Average$453FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$299Average$440FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$310Average$443FlexibilityNo cancel feeOn-time63%
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