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Cheap flights from Boston to St. Louis (BOS - STL) from $115

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 6/14. 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
Jun 2 — Jun 91
From?
To?
Sun 6/2
Sun 6/9
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 Wednesday 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 28, 2024.

Popular in

June

Cheapest in

February

Round-trip from

$319

One-way from

$139
High demand for flights, 12% potential price rise
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Best time to find cheap flights, 22% 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 $554 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 $442 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 at noon. Doing so could potentially save you 16% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap Frontier flights from Boston to St. Louis

Explore cheap flight options specifically provided by Frontier 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 2,740,132 searches. Data last updated May 28, 2024.
Consider these cheap Frontier flights we've found departing from Boston to St. Louis. Deals update often to give you more flight options matching your criteria
Wed 7/39:16 amBOS - STL
1 stop24h 21mFrontier
Wed 7/109:32 pmSTL - BOS
1 stop11h 36mFrontier
Deal found 5/27$158
Wed 7/1012:32 pmBOS - STL
1 stop9h 10mFrontier
Tue 7/167:33 pmSTL - BOS
1 stop11h 53mFrontier
Deal found 5/27$160
Wed 7/319:26 amBOS - STL
1 stop24h 17mFrontier
Sat 8/33:09 pmSTL - BOS
1 stop8h 18mFrontier
Deal found 5/27$164
Wed 7/1012:32 pmBOS - STL
1 stop9h 10mFrontier
Mon 7/159:32 pmSTL - BOS
1 stop11h 36mFrontier
Deal found 5/27$168
Wed 7/319:26 amBOS - STL
1 stop24h 17mFrontier
Sat 8/33:09 pmSTL - BOS
1 stop8h 18mFrontier
Deal found 5/27$170
Wed 7/39:16 amBOS - STL
1 stop24h 21mFrontier
Thu 7/47:29 pmSTL - BOS
1 stop11h 57mFrontier
Deal found 5/27$173
Wed 6/199:16 amBOS - STL
1 stop22h 51mFrontier
Tue 6/257:44 pmSTL - BOS
1 stop11h 32mFrontier
Deal found 5/28$209
Sat 6/2210:12 amBOS - STL
1 stop21h 55mFrontier
Sun 6/237:44 pmSTL - BOS
1 stop11h 32mFrontier
Deal found 5/27$212
Wed 6/199:16 amBOS - STL
1 stop22h 51mFrontier
Fri 6/2110:36 pmSTL - BOS
1 stop7h 22mFrontier
Deal found 5/28$217

  • One of the most popular airlines traveling from Boston to St. Louis is Frontier. Flights from Frontier traveling this route typically cost $518.80 RT. This price is typically 31% cheaper than other airlines that offer Boston to St. Louis flights. When booking this route, the cheapest RT price found was $320. Boston Logan Intl Airport is the most common Boston airport to take off from when flying to St. Louis. Lambert-St Louis Airport is the most popular arrival airport in St. Louis. When flying from Boston to St. Louis, Frontier flights are 6% more popular than any other airline flying that same route.

Cheap United Airlines flights from Boston to St. Louis

Explore cheap flight options specifically provided by United 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 2,740,132 searches. Data last updated May 28, 2024.
Browse through some of the cheapest United 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.
Tue 6/188:45 amBOS - STL
2 stops7h 56mUnited Airlines
Tue 6/256:08 amSTL - BOS
1 stop7h 08mUnited Airlines
Deal found 5/27$253
Tue 6/116:00 amBOS - STL
1 stop5h 57mUnited Airlines
Sat 6/156:08 amSTL - BOS
1 stop7h 11mUnited Airlines
Deal found 5/28$276
Tue 6/188:00 amBOS - STL
1 stop7h 14mUnited Airlines
Wed 7/36:08 amSTL - BOS
1 stop7h 08mUnited Airlines
Deal found 5/27$279
Tue 6/46:00 amBOS - STL
1 stop5h 57mUnited Airlines
Thu 6/66:08 amSTL - BOS
1 stop7h 08mUnited Airlines
Deal found 5/27$285
Wed 6/58:45 amBOS - STL
2 stops7h 56mUnited Airlines
Sat 6/86:08 amSTL - BOS
1 stop7h 11mUnited Airlines
Deal found 5/27$321
Tue 6/46:00 amBOS - STL
1 stop5h 57mUnited Airlines
Thu 6/66:08 amSTL - BOS
1 stop7h 08mUnited Airlines
Deal found 5/27$327
Mon 6/310:10 amBOS - STL
1 stop6h 48mUnited Airlines
Thu 6/66:08 amSTL - BOS
1 stop7h 08mUnited Airlines
Deal found 5/27$380
Sun 6/29:50 amBOS - STL
1 stop6h 51mUnited Airlines
Wed 6/56:08 amSTL - BOS
1 stop6h 07mUnited Airlines
Deal found 5/27$396
Sun 6/28:45 amBOS - STL
2 stops7h 56mUnited Airlines
Wed 6/56:08 amSTL - BOS
1 stop6h 07mUnited Airlines
Deal found 5/27$401

  • If you’re traveling from Boston to St. Louis, one of the more common airlines traveling that route is United Airlines. Flights from United Airlines traveling this route typically cost $446.15 RT. This price is typically 57% 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, United 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 2,740,132 searches. Prices were last updated on May 28, 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.
Wed 6/59:16 amBOS - STL
1 stop22h 51mFrontier
Sun 6/97:44 pmSTL - BOS
1 stop11h 32mFrontier
Deal found 5/27$164
Sat 6/156:10 amBOS - STL
1 stop12h 18mMultiple Airlines
Tue 6/187:44 pmSTL - BOS
1 stop11h 32mMultiple Airlines
Deal found 5/28$192
Wed 6/126:10 amBOS - STL
3 stops30h 35mMultiple Airlines
Tue 6/183:23 pmSTL - BOS
1 stop6h 45mMultiple Airlines
Deal found 5/28$195
Sun 6/165:20 amBOS - STL
1 stop4h 55mDelta
Mon 6/176:00 amSTL - BOS
1 stop7h 17mDelta
Deal found 5/28$196
Tue 6/256:10 amBOS - STL
1 stop9h 13mMultiple Airlines
Tue 6/257:44 pmSTL - BOS
1 stop11h 32mMultiple Airlines
Deal found 5/27$197
Tue 6/116:10 amBOS - STL
1 stop9h 13mMultiple Airlines
Thu 6/132:00 pmSTL - BOS
2 stops33h 38mMultiple Airlines
Deal found 5/27$200
Sat 6/156:10 amBOS - STL
1 stop12h 18mMultiple Airlines
Sun 6/1612:15 pmSTL - BOS
2 stops11h 23mMultiple Airlines
Deal found 5/28$207
Wed 6/199:16 amBOS - STL
1 stop22h 51mFrontier
Tue 6/257:44 pmSTL - BOS
1 stop11h 32mFrontier
Deal found 5/28$209
Wed 6/126:10 amBOS - STL
3 stops30h 35mMultiple Airlines
Fri 6/1412:15 pmSTL - BOS
2 stops11h 23mMultiple Airlines
Deal found 5/28$211

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 2,740,132 searches. Data last updated May 28, 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.
Wed 7/39:16 amBOS - STL
1 stop24h 21mFrontier
Wed 7/109:32 pmSTL - BOS
1 stop11h 36mFrontier
Deal found 5/27$158
Wed 7/1012:32 pmBOS - STL
1 stop9h 10mFrontier
Tue 7/167:33 pmSTL - BOS
1 stop11h 53mFrontier
Deal found 5/27$160
Wed 6/59:16 amBOS - STL
1 stop22h 51mFrontier
Sun 6/97:44 pmSTL - BOS
1 stop11h 32mFrontier
Deal found 5/27$164
Wed 7/1012:32 pmBOS - STL
1 stop9h 10mFrontier
Mon 7/159:32 pmSTL - BOS
1 stop11h 36mFrontier
Deal found 5/27$168
Wed 7/319:26 amBOS - STL
1 stop24h 17mFrontier
Sat 8/33:09 pmSTL - BOS
1 stop8h 18mFrontier
Deal found 5/27$170
Wed 7/39:16 amBOS - STL
1 stop24h 21mFrontier
Thu 7/47:29 pmSTL - BOS
1 stop11h 57mFrontier
Deal found 5/27$173
Thu 7/116:10 amBOS - STL
1 stop12h 19mSpirit Airlines
Tue 7/1610:11 amSTL - BOS
1 stop12h 27mSpirit Airlines
Deal found 5/27$188
Sat 6/156:10 amBOS - STL
1 stop12h 18mMultiple Airlines
Tue 6/187:44 pmSTL - BOS
1 stop11h 32mMultiple Airlines
Deal found 5/28$192
Wed 6/126:10 amBOS - STL
3 stops30h 35mMultiple Airlines
Tue 6/183:23 pmSTL - BOS
1 stop6h 45mMultiple Airlines
Deal found 5/28$195

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 2,740,132 searches. Data last updated May 28, 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.
Tue 6/187:00 amBOS - STL
Nonstop3h 07mAmerican Airlines
Wed 7/36:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/27$311
Wed 6/267:00 amBOS - STL
Nonstop3h 07mAmerican Airlines
Wed 7/36:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/27$318
Tue 7/307:00 amBOS - STL
Nonstop3h 12mAmerican Airlines
Thu 8/16:51 pmSTL - BOS
Nonstop2h 38mAmerican Airlines
Deal found 5/27$326
Wed 7/107:00 amBOS - STL
Nonstop3h 12mAmerican Airlines
Mon 7/156:51 pmSTL - BOS
Nonstop2h 38mAmerican Airlines
Deal found 5/27$346
Wed 10/24:15 pmBOS - STL
Nonstop3h 00mAmerican Airlines
Fri 10/46:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/28$355
Thu 6/277:00 amBOS - STL
Nonstop3h 07mAmerican Airlines
Thu 7/46:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/28$356
Fri 9/277:00 amBOS - STL
Nonstop3h 00mAmerican Airlines
Sun 9/296:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/27$361
Thu 8/154:26 pmBOS - STL
Nonstop3h 06mAmerican Airlines
Sun 8/187:02 pmSTL - BOS
Nonstop2h 38mAmerican Airlines
Deal found 5/27$362
Thu 9/127:00 amBOS - STL
Nonstop3h 00mAmerican Airlines
Sun 9/1511:38 amSTL - BOS
Nonstop2h 43mAmerican Airlines
Deal found 5/28$363

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 2,740,132 searches. Data last updated May 28, 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.
Wed 6/59:16 amBOS - STL
1 stop22h 51mFrontier
Sun 6/97:44 pmSTL - BOS
1 stop11h 32mFrontier
Deal found 5/27$164
Tue 6/45:35 amBOS - STL
1 stop4h 44mDelta
Fri 6/77:06 pmSTL - BOS
1 stop5h 25mDelta
Deal found 5/27$196
Wed 6/59:16 amBOS - STL
1 stop22h 51mMultiple Airlines
Sun 6/305:22 pmSTL - BOS
1 stop27h 06mMultiple Airlines
Deal found 5/27$230
Wed 6/59:16 amBOS - STL
1 stop22h 51mMultiple Airlines
Sat 6/811:34 amSTL - BOS
1 stop7h 52mMultiple Airlines
Deal found 5/27$242
Tue 6/46:01 pmBOS - STL
3 stops42h 44mMultiple Airlines
Thu 6/68:12 pmSTL - BOS
1 stop14h 05mMultiple Airlines
Deal found 5/27$245
Fri 6/76:39 pmBOS - STL
1 stop16h 55mSpirit Airlines
Sun 6/96:55 pmSTL - BOS
1 stop15h 22mSpirit Airlines
Deal found 5/27$256
Tue 6/43:35 pmBOS - STL
2 stops22h 30mSpirit Airlines
Thu 6/68:12 pmSTL - BOS
1 stop15h 51mSpirit Airlines
Deal found 5/27$262
Tue 6/41:53 pmBOS - STL
3 stops23h 12mMultiple Airlines
Thu 6/68:12 pmSTL - BOS
1 stop14h 05mMultiple Airlines
Deal found 5/27$263
Fri 6/76:39 pmBOS - STL
1 stop16h 55mSpirit Airlines
Sun 6/96:55 pmSTL - BOS
1 stop15h 22mSpirit Airlines
Deal found 5/27$264

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 2,740,132 searches. Data last updated May 28, 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.
Fri 6/146:30 amBOS - STL
2 stops30h 15mMultiple Airlines
Deal found 5/27$115
Mon 6/108:00 pmBOS - STL
3 stops15h 57mSpirit Airlines
Deal found 5/27$117
Mon 6/33:30 pmBOS - STL
2 stops23h 07mSpirit Airlines
Deal found 5/27$122
Tue 6/116:10 amBOS - STL
3 stops30h 35mMultiple Airlines
Deal found 5/27$124
Mon 6/311:28 amBOS - STL
3 stops27h 09mSpirit Airlines
Deal found 5/27$125
Wed 6/266:30 amBOS - STL
3 stops35h 58mSpirit Airlines
Deal found 5/27$131
Fri 6/218:00 pmBOS - STL
2 stops22h 28mSpirit Airlines
Deal found 5/27$132
Tue 6/43:35 pmBOS - STL
2 stops22h 30mSpirit Airlines
Deal found 5/27$134
Tue 6/256:30 amBOS - STL
2 stops30h 15mMultiple Airlines
Deal found 5/27$135

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 2,740,132 searches. Data last updated May 28, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$158 - $290

Route

Depart

Return

Price

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 7/3

1 stop24h 21m

Lambert-St Louis

Wed 7/10

1 stop11h 36m

$158

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 7/10

1 stop9h 10m

Lambert-St Louis

Tue 7/16

1 stop11h 53m

$160

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 7/31

1 stop24h 17m

Lambert-St Louis

Sat 8/3

1 stop8h 18m

$164

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Thu 7/11

1 stop12h 19m

Lambert-St Louis

Tue 7/16

1 stop12h 27m

$188

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Thu 9/12

1 stop12h 20m

Lambert-St Louis

Sun 9/15

1 stop29h 19m

$191

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Sat 6/15

1 stop12h 18m

Lambert-St Louis

Tue 6/18

1 stop11h 32m

$192

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Sun 6/16

1 stop4h 55m

Lambert-St Louis

Tue 6/18

1 stop6h 18m

$196

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 6/18

2 stops7h 56m

Lambert-St Louis

Tue 6/25

1 stop7h 08m

$253

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 6/26

Nonstop3h 07m

Lambert-St Louis

Wed 7/3

1 stop8h 04m

$290

Flights are sorted by cheapest first

Deals found on 5/27

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 24, 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 26, 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.
Search Deals

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.

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 28, 2024.
Peruse reviews from past customers who have flown with Frontier, United Airlines 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
8.2
Very good
5,984 reviews
Check prices

Overall

8.2

Crew

8.7

Comfort

8.1

Boarding

8.3

Entertainment

7.8

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Southwest
8.2
Very good
5,984 reviews
Southwest
8.2
Very good
5,984 reviews
Check prices

Overall

8.2

Crew

8.7

Comfort

8.1

Boarding

8.3

Entertainment

7.8

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Delta
8.0
Very good
10,476 reviews
Southwest
8.2
Very good
5,984 reviews
Check prices

Overall

8.2

Crew

8.7

Comfort

8.1

Boarding

8.3

Entertainment

7.8

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

United Airlines
7.4
Good
10,799 reviews
Southwest
8.2
Very good
5,984 reviews
Check prices

Overall

8.2

Crew

8.7

Comfort

8.1

Boarding

8.3

Entertainment

7.8

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

American Airlines
7.3
Good
14,316 reviews
Southwest
8.2
Very good
5,984 reviews
Check prices

Overall

8.2

Crew

8.7

Comfort

8.1

Boarding

8.3

Entertainment

7.8

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Spirit Airlines
6.4
Okay
8,617 reviews
Southwest
8.2
Very good
5,984 reviews
Check prices

Overall

8.2

Crew

8.7

Comfort

8.1

Boarding

8.3

Entertainment

7.8

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

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. 3h 07m 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 $200 on Cheapflights?

    Yes, there are multiple flights from Boston to St. Louis for under $200. The cheapest flight booked recently is on Frontier for just $158, but on average you can expect to pay $191.

  • 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 $378.

  • Are there last-minute flights available from Boston to St. Louis for under $200?

    There are currently 20+ open flights from Boston to St. Louis within the next 7 days for less than $200.

  • What days are nonstop flights available from Boston to St. Louis?

    Days when nonstop flights are available for this flight are: Saturday.

  • How many flights depart from Boston to St. Louis on average per day?

    Travelers can expect 2 flights from Boston to St. Louis on average per day.
    Morning (6am - Noon) - 50% of flight departures
    Evening (6pm - Midnight) - 50% of flight departures

  • How long is the flight from Boston to St. Louis?

    Airlines like Frontier, Spirit Airlines, and Delta fly from Boston to St. Louis in about 4h 55m. The time it takes to get you to your destination can typically vary by up to 19h 26m. The distance between Boston and St. Louis is about 1049 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $158. Other airlines that can offer you cheap pricing are Spirit Airlines, from $188, and Delta, from $196. Frontier is priced at 64% 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 Spirit Airlines, with whom users have recently found tickets for as low as $117. However, be on the lookout for offers from American 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 (96%), American Airlines (94%).

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

    Looking at all options, your cheapest flight can be booked for $132. While the most popular route (Boston Logan Intl - Lambert-St Louis) can be booked for $173 on average our data indicates $342 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 5/28.

  • 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.

  • When is the best time 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 $319). Flying from Boston to St. Louis in July is currently the most expensive (average of $366). 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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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 2,740,132 searches. Data last updated May 28, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$102Average$223FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$146Average$254FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
DeltaCheapest$197Average$406FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$278Average$446FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$313Average$509FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
JetBlueCheapest$320Average$519FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Alaska AirlinesCheapest$366Average$535FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
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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 28, 2024.
1%of flight departuresEarly morningMidnight to 6 am
88%of flight departuresMorning6 am to noon
10%of flight departuresAfternoonNoon to 6 pm
1%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 28, 2024.
Sunday7daily flights
Monday6daily flights
Tuesday6daily flights
Wednesday6daily flights
Thursday6daily flights
Friday6daily flights
Saturday3daily flights

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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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