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Cheap flights from Boston to St. Louis (BOS - STL) from $75

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 5/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
BOS — STL
May 16 — May 231
From?
To?
Thu 5/16
Thu 5/23
1 adult, Economy
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The best prices from Boston Logan Intl to Lambert-St Louis are usually found in February or January, booked 81 days in advance, depart on a Tuesday or Saturday and return on a Wednesday

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 May 11, 2024.

Popular in

June

Cheapest in

February

Round-trip from

$322

One-way from

$133
High demand for flights, 15% potential price rise
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Best time to find cheap flights, 23% 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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What is the cheapest day to fly round-trip from Boston to St. Louis?

Sunday flights are found to be more expensive to fly from Boston to St. Louis. 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 St. Louis.

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

To save up to 87% on this flight, we recommend booking at least 30 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Boston to St. Louis from $569 1-2 weeks out and tickets from $644 for flights departing within the next 72 hours.

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

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, February can be a great choice for travel to St. Louis. Flights to St. Louis from Boston in February are about $446 on average during February, but can be found for as low as $158.

When is the cheapest time to fly from Boston to St. Louis (BOS - STL)?

It’s typically best to fly out from Boston to St. Louis in the evening. Doing so could potentially save you 28% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap Spirit Airlines flights from Boston to St. Louis

Explore cheap flight options specifically provided by Spirit Airlines for the route between Boston and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,684,066 searches. Data last updated May 11, 2024.
Consider these cheap Spirit Airlines flights we've found departing from Boston to St. Louis. Deals update often to give you more flight options matching your criteria
Fri 5/178:59 pmBOS - STL
1 stop14h 29mSpirit Airlines
Sun 5/197:30 pmSTL - BOS
2 stops25h 07mSpirit Airlines
Deal found 5/9$317
Mon 6/1710:41 amBOS - STL
3 stops28h 42mSpirit Airlines
Sat 6/2211:34 amSTL - BOS
2 stops11h 34mSpirit Airlines
Deal found 5/9$349
Fri 6/216:39 pmBOS - STL
1 stop16h 55mSpirit Airlines
Tue 6/253:23 pmSTL - BOS
2 stops22h 26mSpirit Airlines
Deal found 5/10$354
Fri 5/178:59 pmBOS - STL
1 stop14h 29mSpirit Airlines
Sun 5/197:30 pmSTL - BOS
3 stops22h 16mSpirit Airlines
Deal found 5/9$360
Fri 5/178:59 pmBOS - STL
1 stop14h 29mSpirit Airlines
Tue 5/2110:34 amSTL - BOS
1 stop29h 23mSpirit Airlines
Deal found 5/10$388
Mon 6/178:00 pmBOS - STL
3 stops15h 57mSpirit Airlines
Sat 6/2211:34 amSTL - BOS
1 stop7h 52mSpirit Airlines
Deal found 5/10$394
Fri 5/173:30 pmBOS - STL
2 stops19h 58mSpirit Airlines
Sun 5/197:30 pmSTL - BOS
3 stops22h 16mSpirit Airlines
Deal found 5/9$416
Mon 6/177:46 pmBOS - STL
2 stops19h 37mSpirit Airlines
Fri 6/213:07 pmSTL - BOS
2 stops27h 03mSpirit Airlines
Deal found 5/10$418
Mon 7/157:25 pmBOS - STL
2 stops15h 21mSpirit Airlines
Sun 7/216:45 pmSTL - BOS
1 stop17h 05mSpirit Airlines
Deal found 5/10$421

  • If you’re traveling from Boston to St. Louis, one of the more common airlines traveling that route is Spirit Airlines. Boston to St. Louis flights are typically 59% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $541.80 RT. The cheapest Spirit Airlines flight found for this route was $440. When traveling from Boston to St. Louis on Spirit Airlines, the most popular airport to depart from is Boston Logan Intl Airport and the most popular airport to arrive at is Lambert-St Louis Airport. When flying from Boston to St. Louis, Spirit Airlines flights are 6% more popular than any other airline flying that same route.

Cheap American Airlines flights from Boston to St. Louis

Explore cheap flight options specifically provided by American Airlines for the route between Boston and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,684,066 searches. Data last updated May 11, 2024.
Browse through some of the cheapest American Airlines flights traveling from Boston to St. Louis. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Fri 6/77:00 amBOS - STL
Nonstop3h 07mAmerican Airlines
Mon 6/106:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/10$353
Thu 6/67:00 amBOS - STL
Nonstop3h 07mAmerican Airlines
Mon 6/106:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/10$355
Fri 6/76:48 amBOS - STL
1 stop8h 28mAmerican Airlines
Mon 6/106:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/10$361
Thu 6/612:02 pmBOS - STL
1 stop5h 46mAmerican Airlines
Mon 6/106:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/10$363
Mon 7/157:00 amBOS - STL
Nonstop3h 12mAmerican Airlines
Mon 8/511:05 amSTL - BOS
Nonstop2h 38mAmerican Airlines
Deal found 5/10$366
Mon 7/157:00 amBOS - STL
Nonstop3h 12mAmerican Airlines
Mon 8/53:18 pmSTL - BOS
1 stop4h 39mAmerican Airlines
Deal found 5/10$374
Mon 7/298:00 amBOS - STL
1 stop5h 27mAmerican Airlines
Thu 8/111:05 amSTL - BOS
Nonstop2h 38mAmerican Airlines
Deal found 5/10$376
Fri 6/77:00 amBOS - STL
Nonstop3h 07mAmerican Airlines
Sun 6/96:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/10$377
Fri 5/317:00 amBOS - STL
Nonstop3h 10mAmerican Airlines
Mon 6/31:40 pmSTL - BOS
Nonstop2h 49mAmerican Airlines
Deal found 5/11$378

  • If you’re traveling from Boston to St. Louis, one of the more common airlines traveling that route is American Airlines. Flights from American Airlines traveling this route typically cost $450.01 RT. This price is typically 78% more expensive than other airlines that offer Boston to St. Louis flights. When booking this route, the cheapest RT price found was $278. The most popular departure airport in Boston when flying to St. Louis is Boston Logan Intl Airport. The most popular airport to fly into when visiting St. Louis is Lambert-St Louis Airport. When flying from Boston to St. Louis, American Airlines flights are 1% more popular than any other airline flying that same route.

Cheap Boston to St. Louis flights in May & June 2024

Find cheap flight options from Boston to St. Louis specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,684,066 searches. Prices were last updated on May 11, 2024.
Check out some of the best flight deals from Boston to St. Louis in 2024. More deals are always being added, so be sure to check back regularly.
Mon 6/1710:41 amBOS - STL
3 stops28h 42mSpirit Airlines
Sat 6/2211:34 amSTL - BOS
2 stops11h 34mSpirit Airlines
Deal found 5/9$349
Fri 6/77:00 amBOS - STL
Nonstop3h 07mAmerican Airlines
Mon 6/106:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/10$353
Fri 6/216:39 pmBOS - STL
1 stop16h 55mSpirit Airlines
Tue 6/253:23 pmSTL - BOS
2 stops22h 26mSpirit Airlines
Deal found 5/10$354
Thu 6/67:00 amBOS - STL
Nonstop3h 07mAmerican Airlines
Mon 6/106:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/10$355
Fri 5/316:10 amBOS - STL
3 stops30h 55mMultiple Airlines
Sun 6/26:19 pmSTL - BOS
3 stops17h 44mMultiple Airlines
Deal found 5/10$357
Fri 5/173:30 pmBOS - STL
2 stops19h 58mMultiple Airlines
Sat 5/185:15 pmSTL - BOS
2 stops22h 08mMultiple Airlines
Deal found 5/10$358
Thu 5/235:45 amBOS - STL
2 stops13h 55mMultiple Airlines
Sun 5/266:20 pmSTL - BOS
1 stop15h 13mMultiple Airlines
Deal found 5/10$359
Fri 5/178:59 pmBOS - STL
1 stop14h 29mSpirit Airlines
Sun 5/197:30 pmSTL - BOS
3 stops22h 16mSpirit Airlines
Deal found 5/9$360
Fri 6/76:48 amBOS - STL
1 stop8h 28mAmerican Airlines
Mon 6/106:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/10$361

Boston to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Boston and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,684,066 searches. Data last updated May 11, 2024.
Check out some of the best flight deals from Boston to St. Louis in 2024. More deals are always being added, so be sure to check back regularly.
Sat 6/111:42 amBOS - STL
1 stop20h 26mFrontier
Tue 6/47:44 pmSTL - BOS
1 stop11h 32mFrontier
Deal found 5/10$104
Fri 5/318:19 amBOS - STL
1 stop5h 01mFrontier
Tue 6/47:44 pmSTL - BOS
1 stop11h 32mFrontier
Deal found 5/11$118
Wed 5/299:52 amBOS - STL
1 stop22h 16mFrontier
Thu 5/307:44 pmSTL - BOS
1 stop12h 20mFrontier
Deal found 5/10$131
Wed 6/129:16 amBOS - STL
1 stop22h 51mFrontier
Fri 6/147:44 pmSTL - BOS
1 stop12h 25mFrontier
Deal found 5/10$138
Sat 6/111:42 amBOS - STL
1 stop20h 26mFrontier
Sun 6/27:44 pmSTL - BOS
1 stop12h 12mFrontier
Deal found 5/9$141
Fri 5/318:19 amBOS - STL
1 stop5h 01mFrontier
Sun 6/27:44 pmSTL - BOS
1 stop12h 12mFrontier
Deal found 5/10$147
Mon 8/269:16 amBOS - STL
1 stop12h 04mFrontier
Thu 8/296:42 pmSTL - BOS
1 stop12h 29mFrontier
Deal found 5/10$157
Mon 6/179:16 amBOS - STL
1 stop22h 51mFrontier
Fri 6/217:44 pmSTL - BOS
1 stop12h 25mFrontier
Deal found 5/10$159
Mon 7/159:16 amBOS - STL
1 stop12h 04mFrontier
Thu 7/186:42 pmSTL - BOS
1 stop12h 29mFrontier
Deal found 5/10$160

Non-stop flights to St. Louis from Boston

Discover non-stop flight options from Boston to St. Louis. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,684,066 searches. Data last updated May 11, 2024.
Take a look at some of the direct flights traveling from Boston to St. Louis in the near future. Select from other flights from Boston to St. Louis by using the search form above.
Fri 5/317:00 amBOS - STL
Nonstop3h 10mAmerican Airlines
Tue 6/41:40 pmSTL - BOS
Nonstop2h 49mAmerican Airlines
Deal found 5/11$313
Sat 6/18:00 amBOS - STL
Nonstop3h 17mAmerican Airlines
Tue 6/41:40 pmSTL - BOS
Nonstop2h 49mAmerican Airlines
Deal found 5/10$317
Tue 7/304:14 pmBOS - STL
Nonstop3h 07mAmerican Airlines
Thu 8/111:05 amSTL - BOS
Nonstop2h 38mAmerican Airlines
Deal found 5/10$332
Tue 6/184:14 pmBOS - STL
Nonstop3h 00mAmerican Airlines
Mon 6/2411:05 amSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/10$347
Sat 8/177:00 amBOS - STL
Nonstop3h 14mAmerican Airlines
Sun 8/186:56 pmSTL - BOS
Nonstop2h 38mAmerican Airlines
Deal found 5/10$351
Fri 9/134:30 pmBOS - STL
Nonstop2h 58mAmerican Airlines
Mon 9/1610:45 amSTL - BOS
Nonstop2h 40mAmerican Airlines
Deal found 5/11$352
Fri 6/77:00 amBOS - STL
Nonstop3h 07mAmerican Airlines
Mon 6/106:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/10$353
Thu 6/67:00 amBOS - STL
Nonstop3h 07mAmerican Airlines
Mon 6/106:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/10$355
Fri 6/287:00 amBOS - STL
Nonstop3h 07mAmerican Airlines
Tue 7/26:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/10$357

Boston to St. Louis flights leaving soon

Find last-minute flight options from Boston to St. Louis for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,684,066 searches. Data last updated May 11, 2024.
Have a look at some of the last-minute flights available departing from Boston to St. Louis. Users should examine the flight details to ensure there are no surprises.
Mon 5/2010:04 amBOS - STL
1 stop11h 22mMultiple Airlines
Sun 5/266:20 pmSTL - BOS
1 stop15h 13mMultiple Airlines
Deal found 5/10$252
Fri 5/178:59 pmBOS - STL
1 stop14h 29mMultiple Airlines
Mon 5/208:35 pmSTL - BOS
3 stops24h 01mMultiple Airlines
Deal found 5/9$264
Thu 5/1610:26 amBOS - STL
1 stop21h 42mFrontier
Sun 5/197:44 pmSTL - BOS
1 stop12h 20mFrontier
Deal found 5/10$268
Fri 5/178:59 pmBOS - STL
1 stop14h 29mMultiple Airlines
Sun 5/197:44 pmSTL - BOS
1 stop12h 20mMultiple Airlines
Deal found 5/10$292
Fri 5/178:59 pmBOS - STL
1 stop14h 29mSpirit Airlines
Sun 5/197:30 pmSTL - BOS
2 stops25h 07mSpirit Airlines
Deal found 5/9$317
Fri 5/173:30 pmBOS - STL
2 stops19h 58mMultiple Airlines
Mon 5/208:35 pmSTL - BOS
3 stops24h 01mMultiple Airlines
Deal found 5/9$320
Fri 5/178:59 pmBOS - STL
1 stop14h 29mMultiple Airlines
Sat 5/185:15 pmSTL - BOS
2 stops22h 08mMultiple Airlines
Deal found 5/10$334
Fri 5/173:30 pmBOS - STL
2 stops19h 58mMultiple Airlines
Sat 5/185:15 pmSTL - BOS
2 stops22h 08mMultiple Airlines
Deal found 5/10$358
Fri 5/178:59 pmBOS - STL
1 stop14h 29mSpirit Airlines
Sun 5/197:30 pmSTL - BOS
3 stops22h 16mSpirit Airlines
Deal found 5/9$360

One-way flights to St. Louis from Boston

Search for one-way flight options from Boston to St. Louis. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,684,066 searches. Data last updated May 11, 2024.
Take a look at some of the one-way flights we've detected from Boston to St. Louis. Users in need of a round-trip flight from Boston to St. Louis instead should update the search form at the top of page.
Sat 5/189:49 amBOS - STL
1 stop7h 36mFrontier
Deal found 5/10$75
Sat 6/86:10 amBOS - STL
1 stop12h 18mSpirit Airlines
Deal found 5/10$79
Thu 6/66:10 amBOS - STL
1 stop12h 18mSpirit Airlines
Deal found 5/9$80
Mon 5/2010:04 amBOS - STL
1 stop11h 22mFrontier
Deal found 5/10$81
Sat 5/1811:29 amBOS - STL
2 stops20h 39mFrontier
Deal found 5/10$83
Mon 6/109:19 pmBOS - STL
2 stops14h 38mSpirit Airlines
Deal found 5/9$84
Mon 7/89:16 amBOS - STL
1 stop12h 04mFrontier
Deal found 5/10$86
Fri 6/76:39 pmBOS - STL
1 stop16h 55mSpirit Airlines
Deal found 5/10$102
Mon 6/102:35 pmBOS - STL
3 stops21h 22mSpirit Airlines
Deal found 5/9$117

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 2,684,066 searches. Data last updated May 11, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$349 - $601

Route

Depart

Return

Price

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Mon 6/17

3 stops28h 42m

Lambert-St Louis

Sat 6/22

2 stops11h 34m

$349

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 6/7

Nonstop3h 07m

Lambert-St Louis

Mon 6/10

Nonstop2h 43m

$353

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 6/21

1 stop16h 55m

Lambert-St Louis

Tue 6/25

2 stops22h 26m

$354

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Thu 6/6

Nonstop3h 07m

Lambert-St Louis

Mon 6/10

Nonstop2h 43m

$355

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 5/31

3 stops30h 55m

Lambert-St Louis

Sun 6/2

3 stops17h 44m

$357

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 5/21

1 stop8h 25m

Lambert-St Louis

Sat 5/25

1 stop6h 58m

$398

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 5/24

1 stop6h 40m

Lambert-St Louis

Sun 5/26

1 stop15h 13m

$405

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 6/18

2 stops7h 56m

Lambert-St Louis

Wed 6/19

1 stop7h 08m

$493

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 5/15

Nonstop2h 55m

Lambert-St Louis

Thu 5/16

1 stop16h 40m

$601

Flights are sorted by cheapest first

Deals found on 5/9

When is the best time to 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 May 3, 2024.
To ensure you get the cheapest price possible for a flight from Boston to St. Louis, you should look to book at least 81 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.
Search Deals

When is the cheapest time 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 May 5, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Boston to St. Louis flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
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Average price of flights to St. Louis by month

Plan your trip from Boston to St. Louis by taking into account the cheapest months to travel. The average price of a one-way flight from Boston to St. Louis is currently $87 while a round-trip flight costs $407. Price data was last updated on May 5, 2024.

Currently, September is the cheapest month in which you can book a flight from Boston to St. Louis (average of $322). Flying from Boston to St. Louis in July is currently the most expensive (average of $372). 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.

January

$326

February

$331

March

$357

April

$337

May

$342

June

$369

July

$372

August

$336

September

$322

October

$324

November

$336

December

$326

Temperature and rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature and rainfall totals by month.

STL

Temperature

32 - 80.6 °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 May 11, 2024.
Peruse reviews from past customers who have flown with Spirit Airlines, American Airlines and Southwest 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
8.2
Very good
6,065 reviews
Check prices

Entertainment

7.8

Crew

8.7

Boarding

8.3

Comfort

8.1

Overall

8.2

Food

7.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.2
Very good
6,065 reviews
Southwest
8.2
Very good
6,065 reviews
Check prices

Entertainment

7.8

Crew

8.7

Boarding

8.3

Comfort

8.1

Overall

8.2

Food

7.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.1
Very good
10,751 reviews
Southwest
8.2
Very good
6,065 reviews
Check prices

Entertainment

7.8

Crew

8.7

Boarding

8.3

Comfort

8.1

Overall

8.2

Food

7.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
10,997 reviews
Southwest
8.2
Very good
6,065 reviews
Check prices

Entertainment

7.8

Crew

8.7

Boarding

8.3

Comfort

8.1

Overall

8.2

Food

7.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

American Airlines
7.3
Good
14,623 reviews
Southwest
8.2
Very good
6,065 reviews
Check prices

Entertainment

7.8

Crew

8.7

Boarding

8.3

Comfort

8.1

Overall

8.2

Food

7.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Sun Country Air
7.2
Good
635 reviews
Southwest
8.2
Very good
6,065 reviews
Check prices

Entertainment

7.8

Crew

8.7

Boarding

8.3

Comfort

8.1

Overall

8.2

Food

7.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

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 7 different airlines, which means you should have some options if you want to compare airfare deals. 2h 58m is how long a nonstop flight from Boston to Lambert-St Louis typically takes.

  • Can I find flights from Boston to St. Louis for under $400 on Cheapflights?

    Yes, there are multiple flights from Boston to St. Louis for under $400. The cheapest flight booked recently is on Spirit Airlines for just $349, but on average you can expect to pay $362.

  • Are there nonstop flights from Boston to St. Louis for under $400 on Cheapflights?

    Cheapflights has at least 20 direct flights from Boston to St. Louis under $400. A good price for a nonstop flight from Boston to St. Louis is less than $364.

  • Are there last-minute flights available from Boston to St. Louis for under $300?

    There are currently 20+ open flights from Boston to St. Louis within the next 7 days for less than $300.

  • 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 $349. Another airline that can offer you cheap pricing is American Airlines. Spirit Airlines is priced at 21% 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 Frontier, with whom users have recently found tickets for as low as $75. However, be on the lookout for offers from Spirit Airlines and American Airlines, as they are both options that can get you from Boston to St. Louis for a low price.

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

    Consider American Airlines, Alaska Airlines or JetBlue when booking your flight. These represent the most popular airlines when flying from Boston to St. Louis.

  • 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%), American Airlines (96%), Qatar Airways (95%).

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

    Looking at all options, your cheapest flight can be booked for $125. While the most popular route (Boston Logan Intl - Lambert-St Louis) can be booked for $143 on average our data indicates $316 when flying from Boston to St. Louis.

  • What does BOS to STL mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Boston Logan Intl Airport to Lambert-St Louis Airport flight would often be abbreviated as a BOS to STL flight.

  • Can I find deals for flights from Boston to St. Louis that include extra baggage allowance?

    The amount of baggage you can bring on your Boston to St. Louis flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Boston to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Boston to St. Louis flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Boston to St. Louis that allow pets onboard?

    Many airlines flying from Boston to St. Louis offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Boston to St. Louis?

    Yes, you can often find last-minute deals on Boston to St. Louis flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Boston to St. Louis flight deals updated?

    The Boston to St. Louis flight deals you see on this page were last updated on 5/11.

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Alternative routes for Boston to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.

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Top 7 airlines flying from Boston to St. Louis

Discover the top 7 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 2,684,066 searches. Data last updated May 11, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$102Average$236FlexibilityNo cancel feeOn-time62%
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Spirit AirlinesCheapest$147Average$242FlexibilityNo cancel feeOn-time65%
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DeltaCheapest$197Average$404FlexibilityNo cancel feeOn-timeN/A
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American AirlinesCheapest$278Average$450FlexibilityNo cancel feeOn-time71%
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United AirlinesCheapest$321Average$531FlexibilityNo cancel feeOn-time69%
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Alaska AirlinesCheapest$366Average$535FlexibilityNo cancel feeOn-time75%
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JetBlueCheapest$440Average$542FlexibilityNo cancel feeOn-time62%
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Search flights from Boston to St. Louis by cabin class

Find flights from Boston to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from Boston to St. Louis

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 May 11, 2024.
1%of flight departuresEarly morningMidnight to 6 am
78%of flight departuresMorning6 am to noon
21%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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 May 11, 2024.
Sunday7daily flights
Monday6daily flights
Tuesday6daily flights
Wednesday6daily flights
Thursday6daily flights
Friday6daily flights
Saturday3daily flights

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Fly with Cheapflights

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How does Cheapflights help users find flights from Boston to St. Louis?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Boston to St. Louis. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Boston to St. Louis?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to St. Louis from Boston.

Can Cheapflights find flights from Boston to St. Louis with no change fees?

Certainly. Search results for flights to St. Louis from Boston shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Boston to St. Louis become cheaper?

Yes, Cheapflights offers price alerts on Boston to St. Louis flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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