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$63+ Cheap flights from St. Louis (STL) to Massachusetts

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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BOS
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from St. Louis to Massachusetts

Cheapest flights from St. Louis to Massachusetts
Explore the most affordable flight options available from St. Louis to Massachusetts. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Frontier deal was found by Cheapflights users on 12/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:37 pmSTL - BOS
1 stop12h 44mFrontier
Thu 1/811:06 amBOS - STL
1 stop12h 27mFrontier
Deal found 12/16$282
This American Airlines deal was found by Cheapflights users on 12/16. 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.
Wed 12/312:50 pmSTL - BOS
Nonstop2h 39mAmerican Airlines
Tue 1/612:55 pmBOS - STL
1 stop9h 20mAmerican Airlines
Deal found 12/16$288
This Frontier deal was found by Cheapflights users on 12/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:37 pmSTL - BOS
1 stop12h 44mFrontier
Mon 1/1211:41 amBOS - STL
1 stop11h 52mFrontier
Deal found 12/16$303
This Frontier deal was found by Cheapflights users on 12/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:37 pmSTL - BOS
1 stop12h 44mFrontier
Sun 1/116:00 amBOS - STL
1 stop9h 48mFrontier
Deal found 12/16$317
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/3010:48 amSTL - BOS
2 stops23h 02mMultiple Airlines
Tue 1/612:29 pmBOS - STL
1 stop11h 04mMultiple Airlines
Deal found 12/17$338
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/314:27 pmSTL - BOS
2 stops31h 52mMultiple Airlines
Tue 1/612:29 pmBOS - STL
1 stop11h 04mMultiple Airlines
Deal found 12/17$346
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/3010:48 amSTL - BOS
2 stops23h 02mMultiple Airlines
Sat 1/311:37 amBOS - STL
1 stop23h 03mMultiple Airlines
Deal found 12/17$366
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/243:10 pmSTL - BDL
1 stop5h 25mUnited Airlines
Sun 1/46:15 pmBDL - STL
1 stop5h 28mUnited Airlines
Deal found 12/17$368
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/3010:48 amSTL - BOS
1 stop22h 20mFrontier
Sat 1/311:37 amBOS - STL
1 stop23h 03mFrontier
Deal found 12/17$371
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/314:27 pmSTL - BOS
2 stops31h 52mFrontier
Sat 1/36:00 amBOS - STL
1 stop28h 40mFrontier
Deal found 12/17$374
This Delta deal was found by Cheapflights users on 12/16. 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 12/315:55 pmSTL - ALB
1 stop4h 28mDelta
Sun 1/45:40 amALB - STL
1 stop4h 44mDelta
Deal found 12/16$377
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Wed 12/313:10 pmSTL - BDL
1 stop5h 25mUnited Airlines
Sun 1/46:15 pmBDL - STL
1 stop5h 28mUnited Airlines
Deal found 12/16$438

Find flight deals from St. Louis to Massachusetts

Keep the following information in mind while searching for St. Louis to Massachusetts flight deals. Data was last updated December 18, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$134
(Kiwi.com)

One-way from

$63
(Trip.com)

Popular in

November

Cheapest in

September

Average price

$427

Good round-trip deal

$479 or less

Good one-way deal

$315 or less
Provider with most accurate pricing for Lambert-St Louis-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Boston Logan Intl flights.
Search Deals
From Lambert-St Louis to Massachusetts
Search Deals
One-way flight from Lambert-St Louis to Massachusetts
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to Massachusetts.
Search Deals
Price to beat on a one-way flight from Lambert-St Louis to Massachusetts.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Massachusetts 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 December 18, 2025.
Use the filters below to find and compare flights from St. Louis to Massachusetts that are best for you.

Fly from

St. Louis

Fly to

Massachusetts

Route

Depart

Return

Price

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Wed 2/25

3:49 pm-11:48 am

1 stop18h 59m

Boston Logan Intl

Tue 3/3

6:00 am-6:51 am

1 stop25h 51m

$154

St. LouisHartford

STL - BDL

STLBDL

Lambert-St Louis

Wed 1/21

5:42 pm-7:36 pm

1 stop24h 54m

Hartford Bradley Intl

Sun 1/25

8:31 pm-9:21 am

1 stop13h 50m

$166

St. LouisHartford

STL - BDL

STLBDL

Lambert-St Louis

Wed 1/21

5:42 pm-11:56 pm

2 stops29h 14m

Hartford Bradley Intl

Sun 1/25

8:31 pm-9:21 am

1 stop13h 50m

$180

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Wed 2/25

3:49 pm-11:48 am

1 stop18h 59m

Boston Logan Intl

Sun 3/1

4:22 pm-6:51 am

2 stops15h 29m

$212

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Fri 1/23

8:22 pm-2:38 pm

2 stops17h 16m

Boston Logan Intl

Sun 1/25

3:43 pm-9:21 am

1 stop18h 38m

$221

St. LouisHartford

STL - BDL

STLBDL

Lambert-St Louis

Sun 2/1

5:42 pm-11:16 pm

2 stops28h 34m

Hartford Bradley Intl

Sat 2/7

3:59 pm-11:33 pm

1 stop8h 34m

$239

St. LouisHartford

STL - BDL

STLBDL

Lambert-St Louis

Fri 2/6

5:42 pm-7:06 pm

1 stop24h 24m

Hartford Bradley Intl

Mon 2/9

1:56 pm-11:33 pm

2 stops10h 37m

$240

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Thu 2/26

10:11 pm-1:13 am

2 stops26h 02m

Boston Logan Intl

Sat 2/28

12:43 pm-11:59 pm

1 stop12h 16m

$241

St. LouisHartford

STL - BDL

STLBDL

Lambert-St Louis

Fri 1/30

11:18 am-11:16 pm

2 stops10h 58m

Hartford Bradley Intl

Sun 2/1

8:31 pm-9:21 am

1 stop13h 50m

$243

St. LouisHartford

STL - BDL

STLBDL

Lambert-St Louis

Sun 2/1

9:09 am-7:36 pm

1 stop9h 27m

Hartford Bradley Intl

Sat 2/7

8:01 pm-8:04 am

1 stop13h 03m

$245

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 53 results
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Best time to book a flight from St. Louis to Massachusetts

Have a flexible travel schedule? Discover the best time to fly to Massachusetts from St. Louis 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 St. Louis to Massachusetts

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

Currently, January is the cheapest month in which you can book a flight from St. Louis to Massachusetts (average of $121). Flying from St. Louis to Massachusetts in May is currently the most expensive (average of $298). 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 STL to MA?

Find hourly flight availability from St. Louis to Massachusetts. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

It’s optimal to fly from St. Louis to Massachusetts in the evening. By choosing this option you can save up to 30% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from St. Louis to Massachusetts?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Massachusetts. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their St. Louis to Massachusetts flight should consider departing on Wednesday at noon when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Massachusetts

Get insights into the airlines that provide service to Massachusetts. 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 Massachusetts. Reviews last updated December 18, 2025.
Read through reviews of airlines operating flights from St. Louis to Massachusetts, such as Southwest, Delta, and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,005 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,054 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Spirit Airlines
6.3
Okay
8,190 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,081 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Massachusetts. 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 from for flights from St. Louis to Massachusetts?

    If you book a flight to Massachusetts from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

  • How popular is this St. Louis to Massachusetts flight route?

    The Lambert-St Louis to Massachusetts flight path was viewed by 12 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 St. Louis to Massachusetts?

    Departing from St. Louis to Massachusetts will take you 4h 41m. Airlines will cover a distance of 908 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from St. Louis to Massachusetts one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $63. However, be on the lookout for offers from Spirit Airlines and Delta, as they are both options that can get you from St. Louis to Massachusetts for a low price.

  • What are the most popular routes from St. Louis to Massachusetts?

    While some choose either Lambert-St Louis - Hartford Bradley Intl or Lambert-St Louis - Albany Intl, Lambert-St Louis - Boston Logan Intl is the most popular route from St. Louis to Massachusetts.

  • What are the most reliable airlines from St. Louis to Massachusetts?

    Before booking your flight to Massachusetts from St. Louis, check out the most reliable airlines to get you to your destination on time: Qatar Airways (82%), Republic Airways (81%), Iberia( 80%).

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

    On average you can expect to pay $873 for a flight from St. Louis to Massachusetts. The cheapest flight overall is $240 while the most popular route, (Lambert-St Louis - Boston Logan Intl) is currently priced at $143.

  • Can I find deals for flights from St. Louis to Massachusetts that include hotel bookings?

    Yes. In addition to deals on St. Louis to Massachusetts flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Massachusetts?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Massachusetts.

  • Can I find deals for business class flights from St. Louis to Massachusetts?

    Yes. Cheapflights offers flight deals from St. Louis to Massachusetts 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 St. Louis to Massachusetts?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Massachusetts (average of $121). Flying from St. Louis to Massachusetts in May is currently the most expensive (average of $298). 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

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Alternative routes for St. Louis to Massachusetts

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from St. Louis to Massachusetts

Discover the top 6 airlines that operate flights from St. Louis to Massachusetts. 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$100Average$250FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$124Average$249FlexibilityNo cancel feeOn-time65%
DeltaCheapest$158Average$424FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$216Average$311FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$260Average$453FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$303Average$453FlexibilityNo cancel feeOn-time63%

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