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St. Louis

$65+ 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — STL
Jul 7 — Jul 141
Mon 7/7
Mon 7/14
1 adult, Economy
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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 July 2, 2025.

Round-trip from

$163
(Priceline)

One-way from

$69
(FlightHub)

Popular in

April

Cheapest in

September

Average price

$438

Good round-trip deal

$379 or less

Good one-way deal

$193 or less
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. 8% potential increase in price ($42 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 2, 2025.

This Priceline deal was found by Cheapflights users on 7/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:40 amBDL - STL
1 stop7h 55mSpirit Airlines
Sun 9/72:30 pmSTL - BDL
1 stop6h 59mSpirit Airlines
Deal found 7/1$163
This Delta deal was found by Cheapflights users on 7/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/65:45 amALB - STL
1 stop6h 49mDelta
Wed 8/63:41 pmSTL - ALB
1 stop7h 10mDelta
Deal found 7/1$237
This American Airlines deal was found by Cheapflights users on 6/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/82:11 pmBDL - STL
1 stop5h 30mAmerican Airlines
Thu 9/117:22 amSTL - BDL
1 stop4h 42mAmerican Airlines
Deal found 6/30$247
This American Airlines deal was found by Cheapflights users on 6/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amALB - STL
1 stop5h 21mAmerican Airlines
Tue 10/78:30 amSTL - ALB
1 stop6h 21mAmerican Airlines
Deal found 6/30$247
This Southwest deal was found by Cheapflights users on 7/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/145:45 amBDL - STL
1 stop6h 45mSouthwest
Tue 8/1911:10 amSTL - BDL
2 stops7h 50mSouthwest
Deal found 7/1$252
This FlightHub deal was found by Cheapflights users on 7/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/246:20 amBDL - STL
1 stop4h 32mMultiple Airlines
Sat 8/25:40 pmSTL - BDL
1 stop25h 03mMultiple Airlines
Deal found 7/1$260
This Southwest deal was found by Cheapflights users on 6/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/293:10 pmALB - STL
1 stop8h 45mSouthwest
Tue 8/51:35 pmSTL - ALB
2 stops7h 35mSouthwest
Deal found 6/29$288
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/297:00 amBOS - STL
Nonstop3h 15mAmerican Airlines
Tue 9/29:45 amSTL - BOS
Nonstop2h 41mAmerican Airlines
Deal found 7/1$312
This Delta deal was found by Cheapflights users on 7/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/264:45 pmBDL - STL
1 stop4h 40mDelta
Tue 8/510:46 amSTL - BDL
1 stop6h 22mDelta
Deal found 7/1$317
This FlightHub deal was found by Cheapflights users on 6/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/168:39 pmBOS - STL
1 stop20h 52mSpirit Airlines
Sat 7/1910:45 amSTL - BOS
1 stop6h 36mSpirit Airlines
Deal found 6/30$320
This Southwest deal was found by Cheapflights users on 7/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/294:05 pmBOS - STL
1 stop7h 30mSouthwest
Mon 9/17:50 amSTL - BOS
Nonstop2h 40mSouthwest
Deal found 7/1$322
This FlightHub deal was found by Cheapflights users on 7/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/119:40 amBOS - STL
1 stop15h 07mMultiple Airlines
Tue 7/155:26 pmSTL - BOS
1 stop25h 08mMultiple Airlines
Deal found 7/2$324

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 July 2, 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 9/4

6:40 am-1:35 pm

1 stop7h 55m

Lambert-St Louis

Sun 9/7

2:30 pm-10:29 pm

1 stop6h 59m

$163

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Wed 8/6

5:45 am-11:34 am

1 stop6h 49m

Lambert-St Louis

Wed 8/6

3:41 pm-11:51 pm

1 stop7h 10m

$237

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Mon 9/8

2:11 pm-6:41 pm

1 stop5h 30m

Lambert-St Louis

Thu 9/11

7:22 am-1:04 pm

1 stop4h 42m

$247

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Fri 10/3

6:00 am-10:21 am

1 stop5h 21m

Lambert-St Louis

Tue 10/7

8:30 am-3:51 pm

1 stop6h 21m

$247

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Thu 8/14

5:45 am-11:30 am

1 stop6h 45m

Lambert-St Louis

Tue 8/19

11:10 am-8:00 pm

2 stops7h 50m

$252

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Thu 7/24

6:20 am-9:52 am

1 stop4h 32m

Lambert-St Louis

Sat 8/2

5:40 pm-7:43 pm

1 stop25h 03m

$260

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Tue 7/29

3:10 pm-10:55 pm

1 stop8h 45m

Lambert-St Louis

Tue 8/5

1:35 pm-10:10 pm

2 stops7h 35m

$288

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Mon 8/18

7:04 pm-11:14 pm

1 stop5h 10m

Lambert-St Louis

Tue 11/25

5:45 pm-11:36 pm

1 stop4h 51m

$307

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 8/29

7:00 am-9:15 am

Nonstop3h 15m

Lambert-St Louis

Tue 9/2

9:45 am-1:26 pm

Nonstop2h 41m

$312

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 7/16

8:39 pm-4:31 pm

1 stop20h 52m

Lambert-St Louis

Sat 7/19

10:45 am-6:21 pm

1 stop6h 36m

$320

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 39 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, 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 July 2, 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.

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 July 2, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Massachusetts to St. Louis by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Food

7.0

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Food

7.0

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,975 reviews
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Food

7.0

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,861 reviews
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Food

7.0

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Food

7.0

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Spirit Airlines
6.3
Okay
8,103 reviews
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Food

7.0

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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 30 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 Spirit Airlines, which is currently one of the cheapest options available, starting at $69. Frontier flights start at $112 while deals on American Airlines start at $114 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 (100%), Republic Airways (100%) and American Airlines (87%).

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

    The cheapest flight price from Massachusetts to St. Louis is $129. On average you can expect to pay $482. The most popular route, (Boston Logan Intl - Lambert-St Louis), can usually be booked for $177.

  • 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
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Festus
Chesterfield
Farmington

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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 July 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$107Average$186FlexibilityNo cancel feeOn-time65%
FrontierCheapest$113Average$213FlexibilityNo cancel feeOn-time62%
DeltaCheapest$196Average$279FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$257Average$436FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$289Average$449FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$333Average$458FlexibilityNo cancel feeOn-time63%

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