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

The Lambert-St Louis to Boston Logan Intl flight path was viewed by 1 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 ($302), Southwest ($305), and American Airlines ($309) offers the cheapest pricing from St. Louis to Boston. Users have found that Spirit Airlines is 28% 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 Southwest, which is currently one of the cheapest options available, starting at $157. Sun Country Air flights start at $158 while deals on American Airlines start at $159 one-way.

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 $1,255, our data shows the cheapest flight currently is $158. When looking at the most popular route, (Lambert-St Louis - Boston Logan Intl), you can expect to pay $150 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 Iberia (77%), Republic Airways (73%) or Qatar Airways (71%) 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, Delta and Frontier. Something to consider prior to booking your flight.

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

Friday flights are found to be more expensive to fly from St. Louis to Boston. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Boston.

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

To save on the cost of your flight from St. Louis to Boston, book at least 38 days before your planned departure. Booking around this time can save you about 39% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $387 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $487.

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

Our data shows that September tends to be the cheapest month to fly to Boston from St. Louis. Users have commonly found prices around $420 for the month, but tickets can be as low as $153. Due to multiple factors, prepare for potentially higher prices in June.

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 6 flights from Lambert-St Louis to Logan Intl, all of which are around 2h 30m 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.

$157+ Flights from St. Louis to Boston

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Cheapflights Tip: The best prices from Lambert-St Louis to Boston Logan Intl are usually found in September or August, booked 84 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap flight deals from St. Louis to Boston

Round-trip from	$302 (Mytrip)
One-way from	$157 (Southwest)
Popular in	June
Cheapest in	September
Average price	$438
Good round-trip deal	$373 or less
Good one-way deal	$210 or less

From Lambert-St Louis to Boston Logan Intl

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

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Highest demand for flights based on searches. 4% potential increase in price ($20 potential increase over avg. RT price).

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Cheapest flight prices on average. 0% potential price decrease ($2 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 Lambert-St Louis to Boston Logan Intl.

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

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Find 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 July 14, 2025.

Tue 8/55:26 pmSTL - BOS

3 stops28h 37mSpirit Airlines

Tue 8/126:00 amBOS - STL

2 stops11h 31mSpirit Airlines

Deal found 7/13

$306

Thu 9/256:00 amSTL - BOS

1 stop5h 22mAmerican Airlines

Thu 10/27:00 amBOS - STL

Nonstop3h 12mAmerican Airlines

Deal found 7/13

$307

Sat 7/2610:45 amSTL - BOS

1 stop6h 36mMultiple Airlines

Sat 8/29:40 amBOS - STL

1 stop15h 07mMultiple Airlines

Deal found 7/13

$311

Fri 8/227:25 pmSTL - BOS

Nonstop2h 35mSouthwest

Fri 8/297:10 amBOS - STL

Nonstop2h 55mSouthwest

Deal found 7/13

$313

Sun 9/76:00 amSTL - BOS

1 stop6h 20mDelta

Sun 9/145:35 amBOS - STL

1 stop5h 24mDelta

Deal found 7/13

$319

Thu 7/175:40 pmSTL - BOS

1 stop13h 55mFrontier

Mon 7/219:40 amBOS - STL

1 stop15h 07mFrontier

Deal found 7/12

$328

Thu 9/2512:25 pmSTL - BOS

1 stop11h 25mUnited Airlines

Tue 9/308:00 amBOS - STL

2 stops8h 44mUnited Airlines

Deal found 7/13

$330

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 July 14, 2025.

Mon 7/2810:47 amSTL - BOS

2 stops21h 16mSpirit Airlines

Thu 7/316:10 amBOS - STL

1 stop11h 21mSpirit Airlines

Deal found 7/14

$302

Fri 8/15:40 pmSTL - BOS

1 stop13h 55mMultiple Airlines

Wed 8/68:39 pmBOS - STL

1 stop20h 52mMultiple Airlines

Deal found 7/14

$304

Wed 8/1312:35 pmSTL - BOS

Nonstop2h 35mSouthwest

Wed 8/136:05 pmBOS - STL

Nonstop2h 55mSouthwest

Deal found 7/14

$305

Sat 8/306:00 amSTL - BOS

1 stop9h 50mAmerican Airlines

Mon 9/17:00 amBOS - STL

Nonstop3h 15mAmerican Airlines

Deal found 7/13

$309

Sun 9/76:00 amSTL - BOS

1 stop6h 20mDelta

Sun 9/145:35 amBOS - STL

1 stop5h 24mDelta

Deal found 7/13

$319

Thu 7/175:40 pmSTL - BOS

1 stop13h 55mFrontier

Mon 7/219:40 amBOS - STL

1 stop15h 07mFrontier

Deal found 7/12

$328

Thu 9/2512:25 pmSTL - BOS

1 stop11h 25mUnited Airlines

Tue 9/308:00 amBOS - STL

2 stops8h 44mUnited Airlines

Deal found 7/13

$330

Last-minute flights from St. Louis to Boston
Discover last-minute flight deals from St. Louis to Boston. Data last updated July 14, 2025 and is based on user searches.

Thu 7/175:40 pmSTL - BOS

1 stop13h 55mFrontier

Mon 7/219:40 amBOS - STL

1 stop15h 07mFrontier

Deal found 7/12

$328

Sat 7/197:15 amSTL - BOS

1 stop8h 44mAmerican Airlines

Sat 7/268:00 amBOS - STL

Nonstop3h 08mAmerican Airlines

Deal found 7/12

$560

Sun 7/205:40 pmSTL - BOS

1 stop13h 55mFrontier

Fri 7/259:40 amBOS - STL

1 stop15h 07mFrontier

Deal found 7/13

$333

Sun 7/205:26 pmSTL - BOS

1 stop25h 08mSpirit Airlines

Sat 7/266:10 amBOS - STL

1 stop9h 29mSpirit Airlines

Deal found 7/12

$371

Tue 7/227:40 pmSTL - BOS

Nonstop2h 30mSouthwest

Sun 7/275:15 amBOS - STL

1 stop7h 45mSouthwest

Deal found 7/11

$643

Thu 7/245:40 pmSTL - BOS

1 stop13h 55mMultiple Airlines

Mon 7/288:39 pmBOS - STL

1 stop20h 52mMultiple Airlines

Deal found 7/13

$314

Thu 7/246:33 amSTL - BOS

2 stops8h 56mUnited Airlines

Mon 7/284:27 pmBOS - STL

1 stop7h 18mUnited Airlines

Deal found 7/13

$725

Fri 8/15:40 pmSTL - BOS

1 stop13h 55mMultiple Airlines

Wed 8/68:39 pmBOS - STL

1 stop20h 52mMultiple Airlines

Deal found 7/14

$304

Tue 8/55:26 pmSTL - BOS

3 stops28h 37mSpirit Airlines

Tue 8/126:00 amBOS - STL

2 stops11h 31mSpirit Airlines

Deal found 7/13

$306

Wed 8/1312:35 pmSTL - BOS

Nonstop2h 35mSouthwest

Wed 8/136:05 pmBOS - STL

Nonstop2h 55mSouthwest

Deal found 7/14

$305

Sun 8/176:00 pmSTL - BOS

1 stop4h 53mDelta

Sat 8/237:35 amBOS - STL

2 stops12h 32mDelta

Deal found 7/13

$329

Fri 8/225:30 pmSTL - BOS

1 stop6h 15mUnited Airlines

Tue 8/268:05 amBOS - STL

2 stops8h 39mUnited Airlines

Deal found 7/14

$302

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 July 14, 2025.

Sat 10/45:55 pmSTL - BOS

Nonstop2h 35mSouthwest

Deal found 7/13

$157

Sun 9/1411:00 amSTL - BOS

1 stop22h 44mSun Country Air

Deal found 7/12

$158

Mon 9/226:27 amSTL - BOS

1 stop5h 45mAmerican Airlines

Deal found 7/13

$159

Fri 10/104:27 pmSTL - BOS

1 stop5h 02mDelta

Deal found 7/13

$160

Thu 9/112:26 pmSTL - BOS

3 stops19h 47mSpirit Airlines

Deal found 7/12

$161

Mon 10/61:00 pmSTL - BOS

3 stops33h 55mMultiple Airlines

Deal found 7/13

$175

Sun 7/202:36 pmSTL - BOS

1 stop17h 52mFrontier

Deal found 7/13

$177

Sat 8/99:09 amSTL - BOS

2 stops13h 50mUnited Airlines

Deal found 7/13

$203

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Mon 7/28

10:47 am-9:03 am

2 stops21h 16m

Boston Logan Intl

Thu 7/31

6:10 am-4:31 pm

1 stop11h 21m

$302

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Fri 8/1

5:40 pm-8:35 am

1 stop13h 55m

Boston Logan Intl

Mon 8/4

8:39 pm-4:31 pm

1 stop20h 52m

$304

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Wed 8/13

12:35 pm-4:10 pm

Nonstop2h 35m

Boston Logan Intl

Wed 8/13

6:05 pm-8:00 pm

Nonstop2h 55m

$305

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Sat 8/30

6:00 am-4:50 pm

1 stop9h 50m

Boston Logan Intl

Mon 9/1

7:00 am-9:15 am

Nonstop3h 15m

$309

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Sun 9/7

6:00 am-1:20 pm

1 stop6h 20m

Boston Logan Intl

Sun 9/14

5:35 am-9:59 am

1 stop5h 24m

$319

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Thu 7/17

5:40 pm-8:35 am

1 stop13h 55m

Boston Logan Intl

Mon 7/21

9:40 am-11:47 pm

1 stop15h 07m

$328

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Thu 9/25

12:25 pm-12:50 am

1 stop11h 25m

Boston Logan Intl

Tue 9/30

8:00 am-3:44 pm

2 stops8h 44m

$330

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Sat 10/4

5:55 pm-9:30 pm

Nonstop2h 35m

$157

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Sun 9/14

11:00 am-10:44 am

1 stop22h 44m

$158

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Mon 9/22

6:27 am-1:12 pm

1 stop5h 45m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/13

Showing 1-10 of 15 results

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

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

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 84 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 $218). Flying from St. Louis to Boston in June is currently the most expensive (average of $306). 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 61% 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 Wednesday afternoons 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.

Weekly flight availability from St. Louis to Boston

The most flights from STL to BOS are scheduled on a Sunday (8 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

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

4,242 reviews

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

4,242 reviews

Southwest

8.0

Very good

4,242 reviews

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

7,956 reviews

Southwest

8.0

Very good

4,242 reviews

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

8,858 reviews

Southwest

8.0

Very good

4,242 reviews

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

4,242 reviews

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.

Sun Country Air

6.9

Okay

335 reviews

Southwest

8.0

Very good

4,242 reviews

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

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 6 flights from Lambert-St Louis to Logan Intl, all of which are around 2h 30m 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 1 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 ($302), Southwest ($305), and American Airlines ($309) offers the cheapest pricing from St. Louis to Boston. Users have found that Spirit Airlines is 28% 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 Southwest, which is currently one of the cheapest options available, starting at $157. Sun Country Air flights start at $158 while deals on American Airlines start at $159 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 Iberia (77%), Republic Airways (73%) or Qatar Airways (71%) 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 $1,255, our data shows the cheapest flight currently is $158. When looking at the most popular route, (Lambert-St Louis - Boston Logan Intl), you can expect to pay $150 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 $218). Flying from St. Louis to Boston in June is currently the most expensive (average of $306). 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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Top 6 airlines flying from St. Louis to Boston

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$100	Average$217	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$153	Average$377	FlexibilityNo cancel fee	On-time69%
Spirit Airlines	Cheapest$168	Average$261	FlexibilityNo cancel fee	On-time65%
Delta	Cheapest$196	Average$284	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$264	Average$424	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$309	Average$451	FlexibilityNo cancel fee	On-time63%

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$157+ 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 10/4. 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

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3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Boston Logan Intl are usually found in September or August, booked 84 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap flight deals from St. Louis to Boston

Round-trip from

One-way from

Popular in

Cheapest in

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Good round-trip deal

Good one-way deal

Find 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 July 14, 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 July 14, 2025.

Cheapflights Fare Finder

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

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

BOS

Our travel experts

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.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Boston. Price data was last updated on July 11, 2025.

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

What is the cheapest time of day to fly from STL to BOS?

Find hourly flight availability from St. Louis to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 14, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Boston. Price data was last updated on July 6, 2025.

Weekly flight availability from St. Louis to Boston

Explore weekly flight availability from St. Louis to Boston. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 14, 2025.

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated July 14, 2025.

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 July 14, 2025.