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$128+ Cheap flights from Boston to St. Louis (BOS - 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 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — STL
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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The best prices from Boston Logan Intl to Lambert-St Louis are usually found in February or September, booked 63 days in advance, depart on a Tuesday or Saturday and return on a Tuesday

Cheap flight deals from Boston to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) 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 November 20, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

March

Cheapest in

February

Round-trip from

$223
(FlightHub)

One-way from

$128
(Delta)
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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High demand for flights, 11% potential price rise
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Best time to find cheap flights, 16% potential price drop
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From Boston Logan Intl to Lambert-St Louis
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One-way flight from Boston Logan Intl to Lambert-St Louis
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Find flight deals from Boston to St. Louis

Cheapest flights from Boston to St. Louis
Explore the most affordable flight options available from Boston to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This FlightHub deal was found by Cheapflights users on 11/19. 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 12/46:00 amBOS - STL
1 stop18h 24mMultiple Airlines
Sun 12/84:26 pmSTL - BOS
1 stop15h 48mMultiple Airlines
Deal found 11/19$223
This Delta deal was found by Cheapflights users on 11/18. 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 12/185:25 amBOS - STL
1 stop7h 38mDelta
Wed 12/255:55 pmSTL - BOS
1 stop4h 56mDelta
Deal found 11/18$226
This FlightHub deal was found by Cheapflights users on 11/19. 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 12/206:00 amBOS - STL
1 stop18h 40mFrontier
Sun 12/228:40 pmSTL - BOS
1 stop13h 15mFrontier
Deal found 11/19$228
This Mytrip deal was found by Cheapflights users on 11/19. 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.
Wed 12/42:18 pmBOS - STL
2 stops26h 03mSpirit Airlines
Sat 12/74:26 pmSTL - BOS
1 stop7h 12mSpirit Airlines
Deal found 11/19$236
This United Airlines deal was found by Cheapflights users on 11/20. 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 12/46:00 amBOS - STL
2 stops10h 34mUnited Airlines
Tue 12/106:30 amSTL - BOS
1 stop5h 15mUnited Airlines
Deal found 11/20$301
This American Airlines deal was found by Cheapflights users on 11/19. 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 12/162:26 pmBOS - STL
1 stop8h 39mAmerican Airlines
Wed 12/181:45 pmSTL - BOS
Nonstop2h 35mAmerican Airlines
Deal found 11/19$325
This Southwest deal was found by Cheapflights users on 11/19. 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 12/108:00 amBOS - STL
Nonstop3h 10mSouthwest
Thu 12/198:25 pmSTL - BOS
Nonstop2h 30mSouthwest
Deal found 11/19$344
This Alaska Airlines deal was found by Cheapflights users on 11/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/97:00 amBOS - STL
1 stop17h 59mAlaska Airlines
Thu 12/122:20 pmSTL - BOS
2 stops27h 34mAlaska Airlines
Deal found 11/19$442

Find flights from Boston to St. Louis within your budget

Customize your flight search to find flights from Boston 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 2,629,791 searches. Data last updated November 20, 2024.

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Route

Depart

Return

Price

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 12/4

6:00 am-11:24 pm

1 stop18h 24m

Lambert-St Louis

Sun 12/8

4:26 pm-9:14 am

1 stop15h 48m

$223

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 12/18

5:25 am-12:03 pm

1 stop7h 38m

Lambert-St Louis

Wed 12/25

5:55 pm-11:51 pm

1 stop4h 56m

$226

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 12/20

6:00 am-11:40 pm

1 stop18h 40m

Lambert-St Louis

Sun 12/22

8:40 pm-10:55 am

1 stop13h 15m

$228

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Mon 1/13

6:31 am-10:47 am

1 stop5h 16m

Lambert-St Louis

Tue 1/14

1:02 pm-8:46 pm

2 stops6h 44m

$231

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 12/4

2:18 pm-3:21 pm

2 stops26h 03m

Lambert-St Louis

Sat 12/7

4:26 pm-12:38 am

1 stop7h 12m

$236

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Mon 12/16

2:26 pm-10:05 pm

1 stop8h 39m

Lambert-St Louis

Wed 12/18

1:45 pm-5:20 pm

Nonstop2h 35m

$325

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 12/10

8:00 am-10:10 am

Nonstop3h 10m

Lambert-St Louis

Thu 12/19

8:25 pm-11:55 pm

Nonstop2h 30m

$344

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 12/24

5:00 pm-9:43 pm

1 stop5h 43m

$128

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 1/8

5:00 am-11:45 am

3 stops31h 45m

$132

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Mon 12/30

6:00 am-11:40 pm

1 stop18h 40m

$134

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 15 results
1
2

Compare providers for flights from Boston to St. Louis

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 Boston to St. Louis in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy2 starsTrust Score*3 stars
FlightnetworkPrice Accuracy-Trust Score*3 stars

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

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

Get recent, data-driven insights about flights from Boston to St. Louis including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to St. Louis. Price data was last updated on November 15, 2024.

To ensure you get the cheapest price possible for a flight from Boston to St. Louis, you should look to book at least 63 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, September is the cheapest month in which you can book a flight from Boston to St. Louis (average of $308). Flying from Boston to St. Louis in March is currently the most expensive (average of $357). 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 BOS to STL?

Find hourly flight availability from Boston 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 November 20, 2024.

It’s typically best to fly out from Boston to St. Louis at noon. Doing so could potentially save you 8% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Boston to St. Louis. Price data was last updated on November 18, 2024.

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

Weekly flight availability from Boston to St. Louis

Explore weekly flight availability from Boston to St. Louis. 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 November 20, 2024.

The most flights from BOS to STL are scheduled on a Monday (6 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

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 November 20, 2024.
Peruse reviews from past customers who have flown with Delta, Frontier and American Airlines from Boston to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,014 reviews

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,461 reviews
Southwest
8.1
Very good
5,014 reviews

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,014 reviews

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

Find useful and relevant information for your journey from Boston 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 airports do I use to fly from Boston to St. Louis?

    If you wish to fly to St. Louis from Boston, then you need to book flights from Boston Logan Intl to Lambert-St Louis. There are 5 flights from Logan Intl (BOS) to Lambert-St Louis (STL) per day to choose from. Flights to St. Louis from Logan Intl are available from 6 different airlines, which means you should have some options if you want to compare airfare deals. 3h 05m is how long a nonstop flight from Boston to Lambert-St Louis typically takes.

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

    Flights from Boston Logan Intl to Lambert-St Louis have been viewed 3 times in the past calendar month.

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

    Cheapflights users have booked flights from Boston to St. Louis round-trip from $226. Other airlines that can offer you cheap pricing are Frontier, from $228, and United Airlines, from $231. Delta is priced at 47% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $128. However, be on the lookout for offers from Spirit Airlines and Frontier, as they are both options that can get you from Boston to St. Louis for a low price.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Boston to St. Louis on time: Republic Airways (100%), Qatar Airways (93%), American Airlines (92%).

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

    Looking at all options, your cheapest flight can be booked for $159. While the most popular route (Boston Logan Intl - Lambert-St Louis) can be booked for $142 on average our data indicates $354 when flying from Boston to St. Louis.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Boston to St. Louis (average of $308). Flying from Boston to St. Louis in March is currently the most expensive (average of $357). 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 Boston to St. Louis

Discover the top 6 airlines that operate flights from Boston 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$208FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$144Average$270FlexibilityNo cancel feeOn-time65%
DeltaCheapest$196Average$379FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$257Average$463FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$257Average$437FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$308Average$433FlexibilityNo cancel feeOn-time63%
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