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Cheap flights from Boston to St. Louis (BOS - STL) from $131

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 5/14. 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
May 3 — May 101
From?
To?
Fri 5/3
Fri 5/10
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 April 28, 2024.

Popular in

November

Cheapest in

February

Round-trip from

$323

One-way from

$148
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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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 84% on this flight, we recommend booking at least 35 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 $534 1-2 weeks out and tickets from $645 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 November. For low rates, February can be a great choice for travel to St. Louis. Flights to St. Louis from Boston in February are about $450 on average during February, but can be found for as low as $147.

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 22% 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 2,944,896 searches. Data last updated April 28, 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
Mon 5/2711:27 amBOS - STL
2 stops23h 12mSpirit Airlines
Mon 6/34:05 pmSTL - BOS
3 stops27h 04mSpirit Airlines
Deal found 4/28$326
Fri 5/33:40 pmBOS - STL
2 stops20h 00mSpirit Airlines
Tue 5/710:34 amSTL - BOS
3 stops22h 16mSpirit Airlines
Deal found 4/26$329
Thu 5/96:10 amBOS - STL
1 stop12h 19mSpirit Airlines
Mon 5/134:05 pmSTL - BOS
2 stops22h 08mSpirit Airlines
Deal found 4/27$332
Mon 5/2710:40 amBOS - STL
3 stops23h 59mSpirit Airlines
Mon 6/34:05 pmSTL - BOS
3 stops27h 04mSpirit Airlines
Deal found 4/28$339
Wed 5/87:49 pmBOS - STL
3 stops23h 51mSpirit Airlines
Sun 5/126:19 pmSTL - BOS
2 stops26h 18mSpirit Airlines
Deal found 4/27$344
Fri 5/310:12 pmBOS - STL
1 stop13h 28mSpirit Airlines
Tue 5/710:34 amSTL - BOS
1 stop12h 25mSpirit Airlines
Deal found 4/28$349
Wed 5/87:49 pmBOS - STL
3 stops23h 51mSpirit Airlines
Sun 5/127:30 pmSTL - BOS
3 stops25h 07mSpirit Airlines
Deal found 4/27$351
Fri 5/179:44 pmBOS - STL
3 stops19h 41mSpirit Airlines
Sun 5/197:30 pmSTL - BOS
3 stops25h 07mSpirit Airlines
Deal found 4/26$356
Thu 5/29:35 pmBOS - STL
2 stops17h 23mSpirit Airlines
Tue 5/710:34 amSTL - BOS
3 stops22h 16mSpirit Airlines
Deal found 4/26$363

  • 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 60% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $545.30 RT. The cheapest Spirit Airlines flight found for this route was $439. 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 4% 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 2,944,896 searches. Data last updated April 28, 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.
Mon 7/12:14 pmBOS - STL
1 stop8h 14mAmerican Airlines
Mon 7/85:46 pmSTL - BOS
1 stop6h 06mAmerican Airlines
Deal found 4/27$331
Tue 5/211:45 pmBOS - STL
1 stop8h 15mAmerican Airlines
Fri 5/248:07 amSTL - BOS
1 stop6h 05mAmerican Airlines
Deal found 4/27$333
Sat 5/182:07 pmBOS - STL
1 stop8h 40mAmerican Airlines
Sat 5/2510:49 amSTL - BOS
Nonstop2h 49mAmerican Airlines
Deal found 4/26$342
Thu 5/2311:02 amBOS - STL
Nonstop3h 07mAmerican Airlines
Sun 5/265:04 amSTL - BOS
1 stop6h 10mAmerican Airlines
Deal found 4/28$345
Thu 5/237:00 amBOS - STL
Nonstop3h 10mAmerican Airlines
Tue 5/285:04 pmSTL - BOS
1 stop5h 45mAmerican Airlines
Deal found 4/27$346
Sat 6/89:23 amBOS - STL
1 stop5h 53mAmerican Airlines
Tue 7/96:51 pmSTL - BOS
Nonstop2h 38mAmerican Airlines
Deal found 4/27$355
Wed 5/157:00 amBOS - STL
Nonstop3h 10mAmerican Airlines
Tue 5/2110:30 amSTL - BOS
Nonstop2h 49mAmerican Airlines
Deal found 4/27$367
Fri 5/247:00 amBOS - STL
Nonstop3h 10mAmerican Airlines
Wed 5/291:40 pmSTL - BOS
Nonstop2h 49mAmerican Airlines
Deal found 4/27$368
Sun 5/1211:02 amBOS - STL
Nonstop3h 07mAmerican Airlines
Sun 5/123:00 pmSTL - BOS
1 stop7h 55mAmerican Airlines
Deal found 4/27$372

  • 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 $449.90 RT. This price is typically 74% 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 0% more popular than any other airline flying that same route.

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

Find cheap flight options from Boston to St. Louis specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,944,896 searches. Prices were last updated on April 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.
Mon 5/2711:27 amBOS - STL
2 stops23h 12mSpirit Airlines
Mon 6/34:05 pmSTL - BOS
3 stops27h 04mSpirit Airlines
Deal found 4/28$326
Wed 5/19:50 pmBOS - STL
1 stop21h 50mMultiple Airlines
Wed 5/89:53 pmSTL - BOS
1 stop9h 15mMultiple Airlines
Deal found 4/27$327
Fri 5/33:40 pmBOS - STL
2 stops20h 00mSpirit Airlines
Tue 5/710:34 amSTL - BOS
3 stops22h 16mSpirit Airlines
Deal found 4/26$329
Thu 5/96:10 amBOS - STL
1 stop12h 19mSpirit Airlines
Mon 5/134:05 pmSTL - BOS
2 stops22h 08mSpirit Airlines
Deal found 4/27$332
Tue 5/211:45 pmBOS - STL
1 stop8h 15mAmerican Airlines
Fri 5/248:07 amSTL - BOS
1 stop6h 05mAmerican Airlines
Deal found 4/27$333
Fri 5/1710:27 pmBOS - STL
3 stops18h 58mMultiple Airlines
Sun 5/194:45 pmSTL - BOS
3 stops27h 52mMultiple Airlines
Deal found 4/27$334
Mon 5/276:00 amBOS - STL
1 stop5h 05mDelta
Mon 6/37:10 pmSTL - BOS
1 stop4h 55mDelta
Deal found 4/28$336
Mon 5/2710:40 amBOS - STL
3 stops23h 59mSpirit Airlines
Mon 6/34:05 pmSTL - BOS
3 stops27h 04mSpirit Airlines
Deal found 4/28$339
Wed 5/225:35 amBOS - STL
1 stop4h 44mDelta
Mon 5/276:00 amSTL - BOS
1 stop5h 22mDelta
Deal found 4/27$340

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 2,944,896 searches. Data last updated April 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.
Sat 5/189:49 amBOS - STL
1 stop7h 36mMultiple Airlines
Sat 5/255:15 pmSTL - BOS
1 stop6h 42mMultiple Airlines
Deal found 4/26$141
Sat 5/49:08 amBOS - STL
1 stop23h 05mFrontier
Sat 5/114:37 pmSTL - BOS
1 stop14h 31mFrontier
Deal found 4/27$143
Wed 5/299:52 amBOS - STL
1 stop11h 18mFrontier
Sat 6/19:29 pmSTL - BOS
1 stop10h 58mFrontier
Deal found 4/27$148
Sat 5/1811:29 amBOS - STL
2 stops20h 39mMultiple Airlines
Sat 5/255:15 pmSTL - BOS
1 stop6h 42mMultiple Airlines
Deal found 4/26$152
Thu 5/1610:26 amBOS - STL
1 stop21h 42mFrontier
Sat 5/185:25 pmSTL - BOS
1 stop15h 18mFrontier
Deal found 4/27$159
Wed 5/1511:36 amBOS - STL
1 stop20h 32mFrontier
Sun 5/197:44 pmSTL - BOS
1 stop12h 20mFrontier
Deal found 4/26$164
Mon 5/278:19 amBOS - STL
1 stop9h 38mFrontier
Thu 5/307:44 pmSTL - BOS
1 stop12h 20mFrontier
Deal found 4/27$176
Thu 5/99:08 amBOS - STL
1 stop23h 05mFrontier
Sat 5/114:37 pmSTL - BOS
1 stop14h 31mFrontier
Deal found 4/26$178
Fri 5/178:59 pmBOS - STL
1 stop14h 29mSpirit Airlines
Tue 5/2110:34 amSTL - BOS
2 stops11h 52mSpirit Airlines
Deal found 4/26$182

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 2,944,896 searches. Data last updated April 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.
Wed 10/24:30 pmBOS - STL
Nonstop2h 58mAmerican Airlines
Tue 10/87:00 pmSTL - BOS
Nonstop2h 40mAmerican Airlines
Deal found 4/26$303
Thu 10/37:00 amBOS - STL
Nonstop3h 08mAmerican Airlines
Wed 10/97:00 pmSTL - BOS
Nonstop2h 40mAmerican Airlines
Deal found 4/26$323
Wed 5/157:00 amBOS - STL
Nonstop3h 10mAmerican Airlines
Tue 5/2110:30 amSTL - BOS
Nonstop2h 49mAmerican Airlines
Deal found 4/27$367
Fri 5/247:00 amBOS - STL
Nonstop3h 10mAmerican Airlines
Wed 5/291:40 pmSTL - BOS
Nonstop2h 49mAmerican Airlines
Deal found 4/27$368
Thu 7/187:00 amBOS - STL
Nonstop3h 12mAmerican Airlines
Mon 7/226:51 pmSTL - BOS
Nonstop2h 38mAmerican Airlines
Deal found 4/27$371
Wed 5/297:00 amBOS - STL
Nonstop3h 10mAmerican Airlines
Fri 5/3110:30 amSTL - BOS
Nonstop2h 49mAmerican Airlines
Deal found 4/27$379
Thu 5/237:00 amBOS - STL
Nonstop3h 10mAmerican Airlines
Tue 5/281:40 pmSTL - BOS
Nonstop2h 49mAmerican Airlines
Deal found 4/27$381
Fri 5/247:00 amBOS - STL
Nonstop3h 10mAmerican Airlines
Wed 5/2910:30 amSTL - BOS
Nonstop2h 49mAmerican Airlines
Deal found 4/28$388
Wed 5/157:00 amBOS - STL
Nonstop3h 10mAmerican Airlines
Thu 5/1610:30 amSTL - BOS
Nonstop2h 49mAmerican Airlines
Deal found 4/27$391

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 2,944,896 searches. Data last updated April 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.
Fri 5/33:40 pmBOS - STL
2 stops20h 00mSpirit Airlines
Tue 5/710:34 amSTL - BOS
3 stops22h 16mSpirit Airlines
Deal found 4/26$329
Wed 5/88:59 pmBOS - STL
1 stop22h 41mMultiple Airlines
Mon 5/139:11 pmSTL - BOS
1 stop9h 57mMultiple Airlines
Deal found 4/27$343
Wed 5/87:49 pmBOS - STL
3 stops23h 51mSpirit Airlines
Sun 5/126:19 pmSTL - BOS
2 stops26h 18mSpirit Airlines
Deal found 4/27$344
Fri 5/310:12 pmBOS - STL
1 stop13h 28mSpirit Airlines
Tue 5/710:34 amSTL - BOS
1 stop12h 25mSpirit Airlines
Deal found 4/28$349
Wed 5/87:49 pmBOS - STL
3 stops23h 51mSpirit Airlines
Sun 5/127:30 pmSTL - BOS
3 stops25h 07mSpirit Airlines
Deal found 4/27$351
Tue 5/71:00 pmBOS - STL
1 stop5h 16mDelta
Tue 5/146:00 amSTL - BOS
1 stop7h 19mDelta
Deal found 4/27$369
Sat 5/42:36 pmBOS - STL
2 stops27h 58mMultiple Airlines
Mon 5/62:00 pmSTL - BOS
3 stops29h 45mMultiple Airlines
Deal found 4/26$374
Sat 5/46:20 pmBOS - STL
1 stop24h 14mMultiple Airlines
Mon 5/62:00 pmSTL - BOS
3 stops29h 45mMultiple Airlines
Deal found 4/26$376
Fri 5/310:12 pmBOS - STL
1 stop13h 28mMultiple Airlines
Sun 5/57:00 amSTL - BOS
2 stops15h 17mMultiple Airlines
Deal found 4/26$397

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 2,944,896 searches. Data last updated April 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.
Tue 5/146:01 pmBOS - STL
3 stops42h 44mMultiple Airlines
Deal found 4/27$131
Sat 5/2511:16 amBOS - STL
3 stops31h 13mSpirit Airlines
Deal found 4/27$132
Fri 6/77:35 pmBOS - STL
1 stop15h 59mSpirit Airlines
Deal found 4/27$134
Thu 6/66:30 amBOS - STL
2 stops10h 45mMultiple Airlines
Deal found 4/27$136
Fri 6/289:16 amBOS - STL
1 stop26h 57mFrontier
Deal found 4/28$139
Wed 6/55:39 pmBOS - STL
3 stops26h 43mSpirit Airlines
Deal found 4/27$147
Sat 7/66:15 amBOS - STL
1 stop7h 20mSun Country Air
Deal found 4/26$148
Mon 6/103:26 pmBOS - STL
3 stops23h 57mSpirit Airlines
Deal found 4/27$150
Sun 6/212:07 pmBOS - STL
1 stop7h 33mSpirit Airlines
Deal found 4/27$152

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 2,944,896 searches. Data last updated April 28, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$326 - $347

Route

Depart

Return

Price

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Mon 5/27

2 stops23h 12m

Lambert-St Louis

Mon 6/3

3 stops27h 04m

$326

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 5/1

1 stop21h 50m

Lambert-St Louis

Wed 5/8

1 stop9h 15m

$327

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 5/3

2 stops20h 00m

Lambert-St Louis

Tue 5/7

3 stops22h 16m

$329

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Mon 7/1

1 stop8h 14m

Lambert-St Louis

Mon 7/8

1 stop6h 06m

$331

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 5/21

1 stop8h 15m

Lambert-St Louis

Fri 5/24

1 stop6h 05m

$333

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 5/17

3 stops18h 58m

Lambert-St Louis

Sun 5/19

3 stops27h 52m

$334

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Mon 5/27

1 stop5h 05m

Lambert-St Louis

Mon 6/3

1 stop4h 55m

$336

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 5/22

1 stop4h 44m

Lambert-St Louis

Mon 5/27

1 stop5h 22m

$340

Boston Logan IntlLambert-St Louis

BOS - STL

BOSSTL

Boston Logan Intl

Thu 5/23

1 stop6h 48m

Lambert-St Louis

Sun 5/26

1 stop6h 37m

$347

Flights are sorted by cheapest first

Deals found on 4/28

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 January 28, 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 April 21, 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. Monday evenings 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 $141 while a round-trip flight costs $334. Price data was last updated on April 21, 2024.

Currently, September is the cheapest month in which you can book a flight from Boston to St. Louis (average of $323). Flying from Boston to St. Louis in July is currently the most expensive (average of $378). 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

$350

June

$373

July

$378

August

$336

September

$323

October

$323

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 April 28, 2024.
Peruse reviews from past customers who have flown with Spirit Airlines, American Airlines and Delta 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.
Delta
8.1
Very good
10,932 reviews
Check prices

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Delta
8.1
Very good
10,932 reviews
Delta
8.1
Very good
10,932 reviews
Check prices

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

United Airlines
7.4
Good
11,221 reviews
Delta
8.1
Very good
10,932 reviews
Check prices

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

American Airlines
7.3
Good
14,844 reviews
Delta
8.1
Very good
10,932 reviews
Check prices

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Sun Country Air
7.3
Good
656 reviews
Delta
8.1
Very good
10,932 reviews
Check prices

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Spirit Airlines
6.4
Okay
8,739 reviews
Delta
8.1
Very good
10,932 reviews
Check prices

Boarding

8.2

Food

7.4

Entertainment

8.0

Comfort

7.9

Crew

8.6

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

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 $326, but on average you can expect to pay $339.

  • 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 $407.

  • Are there last-minute flights available from Boston to St. Louis for under $400?

    There are currently 20+ open flights from Boston to St. Louis within the next 7 days for less than $400.

  • 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 $326. Other airlines that can offer you cheap pricing are American Airlines, from $331, and Delta, from $336. Spirit Airlines is priced at 27% 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 $132. However, be on the lookout for offers from Frontier and Sun Country Air, 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 (97%), Qatar Airways (93%).

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

    Looking at all options, your cheapest flight can be booked for $145. While the most popular route (Boston Logan Intl - Lambert-St Louis) can be booked for $181 on average our data indicates $335 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 4/27.

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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 2,944,896 searches. Data last updated April 28, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$102Average$243FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$147Average$242FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
DeltaCheapest$197Average$398FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$278Average$450FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$321Average$536FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Alaska AirlinesCheapest$366Average$535FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
JetBlueCheapest$439Average$545FlexibilityNo cancel feeOn-time62%
Search JetBlue 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 April 28, 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 April 28, 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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