How popular is this St. Louis to Boston flight route?

The Lambert-St Louis to Boston Logan Intl 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.

What are the cheapest airlines flying from St. Louis to Boston round-trip?

According to our current data, Spirit Airlines ($73), Frontier ($75), and Delta ($118) offers the cheapest pricing from St. Louis to Boston. Users have found that Spirit Airlines is 83% cheaper than the other options available to this destination.

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

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $63. Spirit Airlines flights start at $70 while deals on Delta start at $118 one-way.

Weekly flight availability from St. Louis to Boston

The most flights from STL to BOS are scheduled on a Monday (11 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (4 on average).

In terms of precipitation, rainfall in Boston ranges from 3.1 - 4.0 inches per month. March is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit Boston when rainfall is around 3.1 in.

If weather is an important factor for your trip to Boston, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

What are the cheapest flights from St. Louis to Boston?

While on average a flight from St. Louis to Boston is generally $688, our data shows the cheapest flight currently is $166. When looking at the most popular route, (Lambert-St Louis - Boston Logan Intl), you can expect to pay $132 for that flight.

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

No one likes to see their flight delayed. When booking a flight from St. Louis to Boston consider choosing Qatar Airways (82%), Republic Airways (81%) or Iberia (80%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from St. Louis to Boston?

The most popular airlines flying from St. Louis to Boston are American Airlines, Southwest and Delta. Something to consider prior to booking your flight.

Most accurate provider : When it comes to deals on St. Louis-Boston flights, users find the pricing of Gotogate to be most consistent on Cheapflights vs. Gotogate Users can find the same prices on St. Louis-Boston flight deals on Cheapflights vs. Gotogate >95% of the time. Price accuracy is based on data collected from St. Louis-Boston flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-Boston flights, Cheapflights users trust Gotogate the most. Gotogate has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airports do I use to fly from St. Louis to Boston?

Booking a flight from Lambert-St Louis (STL) to Boston Logan Intl (BOS) is your only option if you wish to fly from St. Louis to Boston. On a typical day, there are 8 flights from Lambert-St Louis to Logan Intl, all of which are around 2h 25m for a nonstop flight. You can also purchase a plane ticket from 6 airlines when you book a flight from Lambert-St Louis to Boston.

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

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

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

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

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

Yes. Cheapflights offers flight deals from St. Louis to Boston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$62+ Flights from St. Louis to Boston

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Find cheap flights from St. Louis to Boston with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Lambert-St Louis to Boston Logan Intl are usually found in September or January, booked 54 days in advance, depart on a Friday or Wednesday and return on a Wednesday

Cheap flight deals from St. Louis to Boston

Cheapest flights from St. Louis to Boston
Explore the most affordable flight options available from St. Louis to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 30, 2025.

Wed 12/317:05 amSTL - BOS

1 stop8h 38mAmerican Airlines

Thu 1/110:55 amBOS - STL

1 stop9h 35mAmerican Airlines

Deal found 12/29

$445

Wed 12/315:00 amSTL - BOS

1 stop10h 43mAmerican Airlines

Tue 1/66:43 amBOS - STL

1 stop9h 21mAmerican Airlines

Deal found 12/28

$520

Mon 12/2910:40 amSTL - BOS

1 stop22h 27mMultiple Airlines

Mon 1/55:45 amBOS - STL

1 stop30h 11mMultiple Airlines

Deal found 12/29

$683

Mon 12/295:00 amSTL - BOS

1 stop8h 14mAmerican Airlines

Fri 1/210:55 amBOS - STL

1 stop9h 35mAmerican Airlines

Deal found 12/28

$703

Sun 12/286:35 pmSTL - BOS

1 stop15h 31mAmerican Airlines

Tue 1/610:30 amBOS - STL

1 stop9h 04mAmerican Airlines

Deal found 12/28

$738

Mon 12/296:35 pmSTL - BOS

1 stop18h 39mAmerican Airlines

Sun 1/49:30 amBOS - STL

1 stop8h 54mAmerican Airlines

Deal found 12/29

$762

Mon 12/294:27 pmSTL - BOS

2 stops30h 30mMultiple Airlines

Sun 1/412:29 pmBOS - STL

1 stop22h 16mMultiple Airlines

Deal found 12/29

$848

Wed 12/317:00 amSTL - BOS

1 stop4h 43mUnited Airlines

Thu 1/16:45 amBOS - STL

2 stops8h 41mUnited Airlines

Deal found 12/29

$858

Mon 12/296:56 amSTL - BOS

1 stop9h 04mAmerican Airlines

Mon 1/57:00 amBOS - STL

Nonstop3h 31mAmerican Airlines

Deal found 12/29

$864

Best flights from St. Louis to Boston
Discover carefully curated flight deals from St. Louis to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 30, 2025.

Wed 1/215:42 pmSTL - BOS

1 stop19h 56mMultiple Airlines

Mon 1/265:27 pmBOS - STL

2 stops31h 06mMultiple Airlines

Deal found 12/29

$153

Sat 1/178:45 amSTL - BOS

Nonstop2h 35mSouthwest

Sun 1/186:25 amBOS - STL

Nonstop3h 20mSouthwest

Deal found 12/29

$297

Fri 1/95:11 pmSTL - BOS

1 stop16h 57mFrontier

Tue 1/136:00 amBOS - STL

1 stop25h 51mFrontier

Deal found 12/29

$305

Tue 3/33:49 pmSTL - BOS

1 stop18h 59mMultiple Airlines

Tue 3/1012:35 pmBOS - STL

1 stop23h 02mMultiple Airlines

Deal found 12/29

$164

Tue 1/135:11 pmSTL - BOS

1 stop20h 27mMultiple Airlines

Thu 1/157:00 amBOS - STL

1 stop16h 34mMultiple Airlines

Deal found 12/28

$185

Tue 3/33:49 pmSTL - BOS

1 stop18h 59mMultiple Airlines

Thu 3/511:45 amBOS - STL

1 stop13h 14mMultiple Airlines

Deal found 12/30

$194

Sun 3/84:51 pmSTL - BOS

2 stops17h 50mMultiple Airlines

Wed 3/114:22 pmBOS - STL

1 stop7h 57mMultiple Airlines

Deal found 12/30

$236

Fri 2/133:49 pmSTL - BOS

1 stop19h 01mMultiple Airlines

Mon 2/165:50 pmBOS - STL

2 stops38h 01mMultiple Airlines

Deal found 12/29

$299

Thu 1/85:11 pmSTL - BOS

1 stop29h 08mMultiple Airlines

Mon 1/1211:41 amBOS - STL

1 stop11h 52mMultiple Airlines

Deal found 12/29

$316

Last-minute flights from St. Louis to Boston
Discover last-minute flight deals from St. Louis to Boston. Data last updated December 30, 2025 and is based on user searches.

Mon 1/125:11 pmSTL - BOS

1 stop20h 27mMultiple Airlines

Sat 1/1712:10 pmBOS - STL

1 stop11h 24mMultiple Airlines

Deal found 12/28

$156

Mon 1/125:11 pmSTL - BOS

1 stop20h 27mMultiple Airlines

Wed 1/143:43 pmBOS - STL

1 stop7h 51mMultiple Airlines

Deal found 12/28

$169

Tue 1/135:11 pmSTL - BOS

1 stop20h 27mMultiple Airlines

Sat 1/1712:10 pmBOS - STL

1 stop11h 24mMultiple Airlines

Deal found 12/28

$142

Wed 1/145:11 pmSTL - BOS

1 stop16h 59mFrontier

Sat 1/1712:10 pmBOS - STL

1 stop11h 24mFrontier

Deal found 12/28

$133

Wed 1/215:42 pmSTL - BOS

1 stop19h 56mMultiple Airlines

Mon 1/263:43 pmBOS - STL

1 stop8h 50mMultiple Airlines

Deal found 12/29

$151

Tue 1/275:42 pmSTL - BOS

1 stop19h 56mMultiple Airlines

Fri 1/303:43 pmBOS - STL

1 stop8h 50mMultiple Airlines

Deal found 12/28

$143

Tue 1/275:42 pmSTL - BOS

1 stop19h 56mMultiple Airlines

Sun 2/13:43 pmBOS - STL

1 stop18h 38mMultiple Airlines

Deal found 12/28

$165

Fri 1/3011:18 amSTL - BOS

1 stop11h 01mMultiple Airlines

Tue 2/33:43 pmBOS - STL

1 stop8h 50mMultiple Airlines

Deal found 12/28

$132

Fri 1/305:42 pmSTL - BOS

1 stop19h 56mMultiple Airlines

Thu 2/55:27 pmBOS - STL

2 stops17h 56mMultiple Airlines

Deal found 12/28

$172

Sat 1/3112:12 pmSTL - BOS

1 stop10h 07mMultiple Airlines

Tue 2/37:00 amBOS - STL

1 stop17h 33mMultiple Airlines

Deal found 12/28

$154

One-way flights from St. Louis to Boston
Search for one-way flight options from St. Louis to Boston. Find affordable one-way fares based on user searches. Data last updated December 30, 2025.

Sat 2/143:49 pmSTL - BOS

1 stop16h 17mFrontier

Deal found 12/29

$62

Wed 2/253:49 pmSTL - BOS

1 stop16h 17mFrontier

Deal found 12/29

$68

Tue 1/275:42 pmSTL - BOS

1 stop19h 56mMultiple Airlines

Deal found 12/29

$69

Mon 1/265:42 pmSTL - BOS

1 stop19h 56mMultiple Airlines

Deal found 12/29

$80

Sat 1/3112:12 pmSTL - BOS

1 stop10h 07mMultiple Airlines

Deal found 12/29

$91

Sun 1/255:42 pmSTL - BOS

1 stop19h 56mMultiple Airlines

Deal found 12/27

$95

Wed 1/288:22 pmSTL - BOS

2 stops18h 57mMultiple Airlines

Deal found 12/27

$102

Wed 3/254:51 pmSTL - BOS

1 stop27h 21mMultiple Airlines

Deal found 12/29

$112

Thu 3/2611:21 amSTL - BOS

1 stop23h 20mFrontier

Deal found 12/28

$113

Wed 2/254:51 pmSTL - BOS

2 stops22h 54mMultiple Airlines

Deal found 12/29

$117

Find flight deals from St. Louis to Boston

Most accurate provider	Gotogate 3 stars
Most trusted provider	Gotogate 3 stars
Round-trip from	$132 (Kiwi.com)
One-way from	$62 (Trip.com)
Popular in	November
Cheapest in	September
Average price	$435
Good round-trip deal	$468 or less
Good one-way deal	$303 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 Boston Logan Intl

Search Deals

One-way flight from Lambert-St Louis to Boston Logan Intl

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($22 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 0% potential price decrease ($5 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 Boston Logan Intl.

Search Deals

Price to beat on a one-way flight from Lambert-St Louis to Boston Logan Intl.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Wed 1/21

5:42 pm-2:38 pm

1 stop19h 56m

Boston Logan Intl

Mon 1/26

5:27 pm-11:33 pm

2 stops31h 06m

$153

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Tue 3/3

3:49 pm-11:48 am

1 stop18h 59m

Boston Logan Intl

Tue 3/10

12:35 pm-10:37 am

1 stop23h 02m

$164

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Tue 1/13

5:11 pm-2:38 pm

1 stop20h 27m

Boston Logan Intl

Thu 1/15

7:00 am-10:34 pm

1 stop16h 34m

$185

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Tue 3/3

3:49 pm-11:48 am

1 stop18h 59m

Boston Logan Intl

Thu 3/5

11:45 am-11:59 pm

1 stop13h 14m

$194

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Sun 3/8

4:51 pm-11:41 am

2 stops17h 50m

Boston Logan Intl

Wed 3/11

4:22 pm-11:19 pm

1 stop7h 57m

$236

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Sat 1/17

8:45 am-12:20 pm

Nonstop2h 35m

Boston Logan Intl

Sun 1/18

6:25 am-8:45 am

Nonstop3h 20m

$297

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Fri 2/13

3:49 pm-11:50 am

1 stop19h 01m

Boston Logan Intl

Mon 2/16

5:50 pm-6:51 am

2 stops38h 01m

$299

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Fri 1/9

5:11 pm-11:08 am

1 stop16h 57m

Boston Logan Intl

Tue 1/13

6:00 am-6:51 am

1 stop25h 51m

$305

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Thu 1/8

5:11 pm-11:19 pm

1 stop29h 08m

Boston Logan Intl

Mon 1/12

11:41 am-10:33 pm

1 stop11h 52m

$316

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Wed 2/25

3:49 pm-9:06 am

1 stop16h 17m

$68

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/29

Showing 1-10 of 17 results

Compare providers for flights from St. Louis to Boston

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Boston in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
Gotogate	Price Accuracy3 stars	Trust Score*3 stars
JustAirTicket	Price Accuracy-	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on St. Louis-Boston flights, users find the pricing of Gotogate to be most consistent on Cheapflights vs. Gotogate Users can find the same prices on St. Louis-Boston flight deals on Cheapflights vs. Gotogate >95% of the time. Price accuracy is based on data collected from St. Louis-Boston flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Boston flights, Cheapflights users trust Gotogate the most. Gotogate has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston 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 Boston

Prices

Airlines

How far ahead should I book a flight from St. Louis to Boston?

The best time to book flights from St. Louis to Boston is 54 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from St. Louis to Boston (average of $122). Flying from St. Louis to Boston in June is currently the most expensive (average of $279). 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 BOS?

A simple way to save on the total cost of your ticket is to fly from St. Louis to Boston in the afternoon. If you’re flexible enough to do this you can expect to save up to 58% on your trip compared to booking a flight at noon.

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

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

The best insider tips for St. Louis to Boston flights

Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Boston trip

Airports

STL

Expect security screening at STL to take 5-10 minutes during off-peak times. Check real-time wait times online before heading to the airport.

BOS

BOS offers rideshare services like Uber and Lyft with designated pickup points. Allow extra travel time due to unpredictable traffic.

Our travel experts

Paul Rubio

Expert on BOS

Taryn White

Expert on STL

Reviews of airlines servicing Boston

Read reviews from past customers who have flown Southwest, Delta, and United Airlines from St. Louis to Boston. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,251 reviews

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

8.0

Very good

4,251 reviews

Southwest

8.0

Very good

4,251 reviews

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

8,014 reviews

Southwest

8.0

Very good

4,251 reviews

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

United Airlines

7.4

Good

9,121 reviews

Southwest

8.0

Very good

4,251 reviews

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

11,072 reviews

Southwest

8.0

Very good

4,251 reviews

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

5.7

Fair

3,065 reviews

Southwest

8.0

Very good

4,251 reviews

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

What airports do I use to fly from St. Louis to Boston?
Booking a flight from Lambert-St Louis (STL) to Boston Logan Intl (BOS) is your only option if you wish to fly from St. Louis to Boston. On a typical day, there are 8 flights from Lambert-St Louis to Logan Intl, all of which are around 2h 25m for a nonstop flight. You can also purchase a plane ticket from 6 airlines when you book a flight from Lambert-St Louis to Boston.
How popular is this St. Louis to Boston flight route?
The Lambert-St Louis to Boston Logan Intl 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.
What are the cheapest airlines flying from St. Louis to Boston round-trip?
According to our current data, Spirit Airlines ($73), Frontier ($75), and Delta ($118) offers the cheapest pricing from St. Louis to Boston. Users have found that Spirit Airlines is 83% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from St. Louis to Boston one-way?
To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $63. Spirit Airlines flights start at $70 while deals on Delta start at $118 one-way.
What are the most reliable airlines from St. Louis to Boston?
No one likes to see their flight delayed. When booking a flight from St. Louis to Boston consider choosing Qatar Airways (82%), Republic Airways (81%) or Iberia (80%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from St. Louis to Boston?
While on average a flight from St. Louis to Boston is generally $688, our data shows the cheapest flight currently is $166. When looking at the most popular route, (Lambert-St Louis - Boston Logan Intl), you can expect to pay $132 for that flight.
Can I find deals for flights from St. Louis to Boston that include hotel bookings?
Yes. In addition to deals on St. Louis to Boston flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Boston?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Boston.
Can I find deals for business class flights from St. Louis to Boston?
Yes. Cheapflights offers flight deals from St. Louis to Boston 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 Boston?
Currently, January is the cheapest month in which you can book a flight from St. Louis to Boston (average of $122). Flying from St. Louis to Boston in June is currently the most expensive (average of $279). 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.

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Top 6 airlines flying from St. Louis to Boston

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$100	Average$250	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$124	Average$249	FlexibilityNo cancel fee	On-time65%
Delta	Cheapest$153	Average$283	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$216	Average$311	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$277	Average$434	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$303	Average$455	FlexibilityNo cancel fee	On-time63%

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$62+ Cheap flights from St. Louis to Boston (STL - BOS)

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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Boston with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Boston Logan Intl are usually found in September or January, booked 54 days in advance, depart on a Friday or Wednesday and return on a Wednesday

Cheap flight deals from St. Louis to Boston

Cheapest flights from St. Louis to BostonExplore the most affordable flight options available from St. Louis to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 30, 2025.

Explore the most affordable flight options available from St. Louis to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 30, 2025.

Find flight deals from St. Louis to Boston

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Boston that are best for you.

Compare providers for flights from St. Louis to Boston

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Boston in December.

Best time to book a flight from St. Louis to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from St. Louis with our price prediction graph.

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Everything you need to know about your flight from St. Louis to Boston

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Weekly flight availability from St. Louis to Boston

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Reviews of airlines servicing Boston

Read reviews from past customers who have flown Southwest, Delta, and United Airlines from St. Louis to Boston. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airports do I use to fly from St. Louis to Boston?

How popular is this St. Louis to Boston flight route?

What are the cheapest airlines flying from St. Louis to Boston round-trip?

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

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

What are the cheapest flights from St. Louis to Boston?

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

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

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

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

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Alternative routes for St. Louis to Boston

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Top 6 airlines flying from St. Louis to Boston

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Cheapest flights from St. Louis to Boston
Explore the most affordable flight options available from St. Louis to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 30, 2025.