Cheap flights from St. Louis to Boston (STL - BOS) from $55

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 4/13. 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.
STL — BOS
Mar 24 — Mar 311

The best prices from Lambert-St Louis to Boston Logan Intl are usually found in January or February, booked 83 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from St. Louis to Boston

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Boston (BOS). 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 March 19, 2024.

Popular in

June

Cheapest in

January

Round-trip from

$218

One-way from

$124
High demand for flights, 12% potential price rise
Best time to find cheap flights, 12% potential price drop
From Lambert-St Louis to Boston Logan Intl
One-way flight from Lambert-St Louis to Boston Logan Intl

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

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

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

To save on the cost of your flight from St. Louis to Boston, book at least 37 days before your planned departure. Booking around this time can save you about 94% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $539 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $648.

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

Our data shows that January tends to be the cheapest month to fly to Boston from St. Louis. Users have commonly found prices around $415 for the month, but tickets can be as low as $125. Due to multiple factors, prepare for potentially higher prices in June.

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

A simple way to save on the total cost of your ticket is to fly from St. Louis to Boston in the afternoon. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight at noon.

Cheap Delta flights from St. Louis to Boston

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Boston. 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 3,145,932 searches. Data last updated March 19, 2024.
Find some of the cheapest Delta flights traveling from St. Louis to Boston. Make sure to double check the flight details before booking.
Tue 4/306:00 amSTL - BOS
1 stop5h 22mDelta
Wed 5/16:45 amBOS - STL
1 stop5h 13mDelta
Deal found 3/17$196
Fri 5/1012:59 pmSTL - BOS
1 stop6h 26mDelta
Fri 5/318:00 amBOS - STL
1 stop5h 16mDelta
Deal found 3/18$214
Tue 6/115:05 pmSTL - BOS
1 stop7h 09mDelta
Tue 6/186:00 amBOS - STL
1 stop7h 58mDelta
Deal found 3/18$310
Tue 6/46:00 amSTL - BOS
1 stop5h 25mDelta
Wed 6/122:00 pmBOS - STL
1 stop8h 06mDelta
Deal found 3/18$320
Tue 4/232:18 pmSTL - BOS
1 stop4h 39mDelta
Tue 4/305:35 amBOS - STL
1 stop4h 45mDelta
Deal found 3/18$330
Wed 6/267:15 pmSTL - BOS
1 stop4h 59mDelta
Tue 7/23:00 pmBOS - STL
1 stop7h 06mDelta
Deal found 3/18$350
Thu 3/286:27 amSTL - BOS
1 stop4h 27mDelta
Fri 3/298:00 amBOS - STL
1 stop8h 00mDelta
Deal found 3/19$490
  • One of the most popular airlines traveling from St. Louis to Boston is Delta. Flights from Delta traveling this route typically cost $528.10 RT. This price is typically 37% cheaper than other airlines that offer St. Louis to Boston flights. When booking this route, the cheapest RT price found was $226. Lambert-St Louis Airport is the most common St. Louis airport to take off from when flying to Boston. Boston Logan Intl Airport is the most popular arrival airport in Boston. When flying from St. Louis to Boston, Delta flights are 8% more popular than any other airline flying that same route.

Cheap American Airlines flights from St. Louis to Boston

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Boston. 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 3,145,932 searches. Data last updated March 19, 2024.
Have a look at some of the cheapest available American Airlines flights departing from St. Louis and landing in Boston. Ensure the flight price, dates, time, and airline match your criteria before you book.
Tue 6/256:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Tue 7/94:14 pmBOS - STL
Nonstop3h 07mAmerican Airlines
Deal found 3/18$291
Wed 4/245:15 amSTL - BOS
1 stop5h 05mAmerican Airlines
Tue 4/301:45 pmBOS - STL
1 stop8h 31mAmerican Airlines
Deal found 3/18$296
Wed 5/156:16 amSTL - BOS
1 stop8h 05mAmerican Airlines
Sun 5/197:00 amBOS - STL
Nonstop3h 10mAmerican Airlines
Deal found 3/18$318
Sat 4/134:42 pmSTL - BOS
1 stop4h 51mAmerican Airlines
Tue 4/167:00 amBOS - STL
Nonstop3h 24mAmerican Airlines
Deal found 3/18$319
Wed 7/106:51 pmSTL - BOS
Nonstop2h 38mAmerican Airlines
Thu 7/182:13 pmBOS - STL
1 stop8h 16mAmerican Airlines
Deal found 3/18$323
Wed 5/155:04 amSTL - BOS
1 stop4h 41mAmerican Airlines
Wed 5/157:05 pmBOS - STL
1 stop5h 17mAmerican Airlines
Deal found 3/18$327
Wed 4/108:46 amSTL - BOS
1 stop9h 05mAmerican Airlines
Fri 4/197:00 amBOS - STL
Nonstop3h 24mAmerican Airlines
Deal found 3/18$328
Wed 7/107:05 amSTL - BOS
1 stop7h 14mAmerican Airlines
Thu 7/182:13 pmBOS - STL
1 stop8h 16mAmerican Airlines
Deal found 3/18$331
Wed 6/265:29 amSTL - BOS
1 stop4h 45mAmerican Airlines
Wed 7/37:00 amBOS - STL
Nonstop3h 07mAmerican Airlines
Deal found 3/18$339
  • If you’re traveling from St. Louis to Boston, one of the more common airlines traveling that route is American Airlines. Flights from American Airlines traveling this route typically cost $418.10 RT. This price is typically 70% more expensive than other airlines that offer St. Louis to Boston flights. When booking this route, the cheapest RT price found was $226. The most popular departure airport in St. Louis when flying to Boston is Lambert-St Louis Airport. The most popular airport to fly into when visiting Boston is Boston Logan Intl Airport. When flying from St. Louis to Boston, American Airlines flights are 3% more popular than any other airline flying that same route.

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

Find cheap flight options from St. Louis to Boston specifically for the months of March and April 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,145,932 searches. Prices were last updated on March 19, 2024.
Scroll through some of the best deals on flights from St. Louis to Boston in 2024. Check back in a little while for more flight options.
Sat 4/279:27 pmSTL - BOS
1 stop9h 41mFrontier
Mon 4/299:08 amBOS - STL
1 stop12h 03mFrontier
Deal found 3/18$98
Sat 4/279:27 pmSTL - BOS
1 stop9h 41mFrontier
Sat 5/119:08 amBOS - STL
1 stop12h 24mFrontier
Deal found 3/19$134
Mon 4/159:11 pmSTL - BOS
1 stop9h 57mFrontier
Mon 4/229:08 amBOS - STL
1 stop12h 03mFrontier
Deal found 3/18$137
Wed 4/249:53 pmSTL - BOS
1 stop9h 15mFrontier
Mon 4/299:08 amBOS - STL
1 stop12h 03mFrontier
Deal found 3/18$138
Wed 4/249:53 pmSTL - BOS
1 stop9h 15mFrontier
Sat 4/279:08 amBOS - STL
1 stop12h 24mFrontier
Deal found 3/18$148
Sat 4/279:27 pmSTL - BOS
1 stop9h 41mFrontier
Thu 5/29:08 amBOS - STL
1 stop23h 05mFrontier
Deal found 3/18$149
Tue 4/28:24 pmSTL - BOS
1 stop11h 21mFrontier
Wed 4/1010:21 amBOS - STL
2 stops11h 32mFrontier
Deal found 3/18$164
Mon 4/229:11 pmSTL - BOS
1 stop9h 57mFrontier
Mon 4/299:08 amBOS - STL
1 stop12h 03mFrontier
Deal found 3/18$168
Tue 4/28:24 pmSTL - BOS
1 stop11h 21mMultiple Airlines
Mon 4/88:33 pmBOS - STL
1 stop12h 48mMultiple Airlines
Deal found 3/18$172

St. Louis to Boston 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Boston in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Scroll through some of the best deals on flights from St. Louis to Boston in 2024. Check back in a little while for more flight options.
Sat 4/279:27 pmSTL - BOS
1 stop9h 41mFrontier
Mon 4/299:08 amBOS - STL
1 stop12h 03mFrontier
Deal found 3/18$98
Sat 4/279:27 pmSTL - BOS
1 stop9h 41mFrontier
Sat 5/119:08 amBOS - STL
1 stop12h 24mFrontier
Deal found 3/19$134
Mon 4/159:11 pmSTL - BOS
1 stop9h 57mFrontier
Mon 4/229:08 amBOS - STL
1 stop12h 03mFrontier
Deal found 3/18$137
Wed 4/249:53 pmSTL - BOS
1 stop9h 15mFrontier
Mon 4/299:08 amBOS - STL
1 stop12h 03mFrontier
Deal found 3/18$138
Wed 4/249:53 pmSTL - BOS
1 stop9h 15mFrontier
Sat 4/279:08 amBOS - STL
1 stop12h 24mFrontier
Deal found 3/18$148
Sat 4/279:27 pmSTL - BOS
1 stop9h 41mFrontier
Thu 5/29:08 amBOS - STL
1 stop23h 05mFrontier
Deal found 3/18$149
Tue 4/28:24 pmSTL - BOS
1 stop11h 21mFrontier
Wed 4/1010:21 amBOS - STL
2 stops11h 32mFrontier
Deal found 3/18$164
Mon 4/229:11 pmSTL - BOS
1 stop9h 57mFrontier
Mon 4/299:08 amBOS - STL
1 stop12h 03mFrontier
Deal found 3/18$168
Tue 4/28:24 pmSTL - BOS
1 stop11h 21mMultiple Airlines
Mon 4/88:33 pmBOS - STL
1 stop12h 48mMultiple Airlines
Deal found 3/18$172

Non-stop flights to Boston from St. Louis

Discover non-stop flight options from St. Louis to Boston. 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 3,145,932 searches. Data last updated March 19, 2024.
To help reduce your travel time, choose from one of these non-stop flights from St. Louis to Boston. Search for alternative flights from St. Louis to Boston by utilizing the search form above.
Tue 6/256:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Tue 7/94:14 pmBOS - STL
Nonstop3h 07mAmerican Airlines
Deal found 3/18$291
Tue 4/161:47 pmSTL - BOS
Nonstop2h 42mAmerican Airlines
Wed 4/2411:05 amBOS - STL
Nonstop3h 12mAmerican Airlines
Deal found 3/19$311
Wed 7/316:51 pmSTL - BOS
Nonstop2h 38mAmerican Airlines
Thu 8/87:00 amBOS - STL
Nonstop3h 08mAmerican Airlines
Deal found 3/18$331
Fri 5/31:47 pmSTL - BOS
Nonstop2h 42mAmerican Airlines
Wed 5/811:02 amBOS - STL
Nonstop3h 07mAmerican Airlines
Deal found 3/18$341
Tue 4/2310:30 amSTL - BOS
Nonstop2h 42mAmerican Airlines
Mon 4/297:00 amBOS - STL
Nonstop3h 24mAmerican Airlines
Deal found 3/18$351
Sun 9/17:00 pmSTL - BOS
Nonstop2h 40mAmerican Airlines
Fri 9/137:00 amBOS - STL
Nonstop3h 08mAmerican Airlines
Deal found 3/18$371
Tue 7/96:51 pmSTL - BOS
Nonstop2h 38mAmerican Airlines
Tue 7/167:00 amBOS - STL
Nonstop3h 12mAmerican Airlines
Deal found 3/17$373
Wed 6/266:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Sun 6/307:00 amBOS - STL
Nonstop3h 07mAmerican Airlines
Deal found 3/18$381
Fri 5/171:40 pmSTL - BOS
Nonstop2h 49mAmerican Airlines
Wed 5/2211:02 amBOS - STL
Nonstop3h 07mAmerican Airlines
Deal found 3/17$383

St. Louis to Boston flights leaving soon

Find last-minute flight options from St. Louis to Boston 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 3,145,932 searches. Data last updated March 19, 2024.
Users seeking a last-minute flight from St. Louis to Boston should consider booking one of these fares. It's wise to confirm all flight details are correct before booking.
Wed 3/279:08 pmSTL - BOS
1 stop10h 37mMultiple Airlines
Wed 4/39:45 amBOS - STL
1 stop11h 28mMultiple Airlines
Deal found 3/18$176
Tue 3/268:24 pmSTL - BOS
1 stop11h 21mMultiple Airlines
Wed 4/39:45 amBOS - STL
1 stop11h 28mMultiple Airlines
Deal found 3/18$179
Tue 3/262:25 pmSTL - BOS
1 stop7h 49mSpirit Airlines
Tue 4/23:56 pmBOS - STL
1 stop29h 17mSpirit Airlines
Deal found 3/18$188
Fri 3/291:17 pmSTL - BOS
1 stop18h 28mFrontier
Wed 4/39:45 amBOS - STL
1 stop23h 36mFrontier
Deal found 3/18$190
Tue 3/268:24 pmSTL - BOS
1 stop11h 21mFrontier
Thu 4/411:23 amBOS - STL
2 stops21h 58mFrontier
Deal found 3/18$195
Wed 3/279:08 pmSTL - BOS
1 stop10h 37mMultiple Airlines
Thu 4/45:40 pmBOS - STL
1 stop15h 41mMultiple Airlines
Deal found 3/18$208
Tue 3/268:24 pmSTL - BOS
1 stop11h 21mFrontier
Sat 4/69:45 amBOS - STL
1 stop23h 36mFrontier
Deal found 3/18$218
Thu 3/288:24 pmSTL - BOS
1 stop11h 21mFrontier
Sat 4/69:45 amBOS - STL
1 stop23h 36mFrontier
Deal found 3/18$221
Fri 3/2910:57 amSTL - BOS
1 stop11h 17mSpirit Airlines
Tue 4/23:56 pmBOS - STL
1 stop29h 17mSpirit Airlines
Deal found 3/18$223

One-way flights to Boston from St. Louis

Search for one-way flight options from St. Louis to Boston. 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 3,145,932 searches. Data last updated March 19, 2024.
If you're seeking multiple options on one-way flights from St. Louis to Boston, be sure to check out these deals, which are updated often. For those needing a return trip from St. Louis, there is a search form available above.
Sat 4/139:27 pmSTL - BOS
1 stop9h 41mFrontier
Deal found 3/17$55
Sun 4/287:16 pmSTL - BOS
1 stop11h 52mFrontier
Deal found 3/18$65
Tue 4/28:24 pmSTL - BOS
1 stop11h 21mFrontier
Deal found 3/18$81
Wed 5/159:53 pmSTL - BOS
1 stop14h 10mMultiple Airlines
Deal found 3/17$86
Wed 5/159:53 pmSTL - BOS
1 stop14h 10mMultiple Airlines
Deal found 3/18$89
Wed 3/279:08 pmSTL - BOS
1 stop10h 37mMultiple Airlines
Deal found 3/17$92
Tue 4/1610:34 amSTL - BOS
1 stop21h 32mSpirit Airlines
Deal found 3/18$95
Fri 3/298:24 pmSTL - BOS
1 stop11h 21mFrontier
Deal found 3/18$96
Wed 5/159:53 pmSTL - BOS
2 stops22h 44mMultiple Airlines
Deal found 3/18$99

Find flights from St. Louis to Boston within your budget

Customize your flight search to find flights from St. Louis to Boston 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 3,145,932 searches. Data last updated March 19, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$98 - $291

Route

Depart

Return

Price

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Sat 4/27

1 stop9h 41m

Boston Logan Intl

Mon 4/29

1 stop12h 03m

$98

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Sat 4/27

1 stop9h 41m

Boston Logan Intl

Sat 5/11

1 stop12h 24m

$134

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Mon 4/15

1 stop9h 57m

Boston Logan Intl

Mon 4/22

1 stop12h 03m

$137

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Wed 4/24

1 stop9h 15m

Boston Logan Intl

Mon 4/29

1 stop12h 03m

$138

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Tue 4/2

1 stop11h 21m

Boston Logan Intl

Mon 4/8

1 stop12h 48m

$172

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Tue 4/30

1 stop5h 22m

Boston Logan Intl

Wed 5/1

1 stop5h 13m

$196

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Sat 3/30

1 stop10h 35m

Boston Logan Intl

Tue 4/2

1 stop29h 17m

$219

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Sun 8/11

1 stop15h 38m

Boston Logan Intl

Thu 10/24

1 stop24h 05m

$275

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Tue 6/25

Nonstop2h 43m

Boston Logan Intl

Tue 7/9

Nonstop3h 07m

$291

Flights are sorted by cheapest first

Deals found on 3/18

When is the best time to book a flight from St. Louis to Boston?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Boston. Price data was last updated on January 28, 2024.
The best time to book flights from St. Louis to Boston is 83 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

When is the cheapest time to fly from St. Louis to Boston?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Boston. Price data was last updated on March 17, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Boston flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Boston by month

Plan your trip from St. Louis to Boston by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Boston is currently $84 while a round-trip flight costs $184. Price data was last updated on March 10, 2024.

Currently, January is the cheapest month in which you can book a flight from St. Louis to Boston (average of $218). Flying from St. Louis to Boston in June is currently the most expensive (average of $328). 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

$218

February

$219

March

$263

April

$293

May

$287

June

$328

July

$328

August

$284

September

$258

October

$262

November

$258

December

$233

Temperature and rainfall in Boston by month

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

BOS

Temperature

30.2 - 73.4 °F

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated March 19, 2024.
Peruse reviews from past customers who have flown with Delta, American Airlines and Frontier from St. Louis to Boston 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.
8.1
Very good
11,551 reviews

Food

7.5

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

8.1

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

8.1
Very good
11,551 reviews
8.1
Very good
11,551 reviews

Food

7.5

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

8.1

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

7.4
Good
11,602 reviews
8.1
Very good
11,551 reviews

Food

7.5

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

8.1

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

7.3
Good
15,312 reviews
8.1
Very good
11,551 reviews

Food

7.5

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

8.1

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

7.3
Good
704 reviews
8.1
Very good
11,551 reviews

Food

7.5

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

8.1

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

6.5
Okay
8,875 reviews
8.1
Very good
11,551 reviews

Food

7.5

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

8.1

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airports do I use to fly from St. Louis to Boston?

    Booking a flight from Lambert-St Louis (STL) to Boston Logan Intl (BOS) is your only option if you wish to fly from St. Louis to Boston. On a typical day, there are 6 flights from Lambert-St Louis to Logan Intl, all of which are around 2h 30m for a nonstop flight. You can also purchase a plane ticket from 6 airlines when you book a flight from Lambert-St Louis to Boston.

  • Can I find flights from St. Louis to Boston for under $100 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Boston for under $100. The cheapest flight booked recently is on Frontier for just $98, but on average you can expect to pay $163.

  • Are there nonstop flights from St. Louis to Boston for under $300 on Cheapflights?

    Cheapflights has at least 20 direct flights from St. Louis to Boston under $300. A good price for a nonstop flight from St. Louis to Boston is less than $391.

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

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

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

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

    According to our current data, Frontier ($98), and Delta ($196) offers the cheapest pricing from St. Louis to Boston. Users have found that Frontier is 76% cheaper than the other options available to this destination.

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

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

    No one likes to see their flight delayed. When booking a flight from St. Louis to Boston consider choosing Iberia (84%), Qatar Airways (77%) or American Airlines (75%) as they are the most reliable in getting you off to your destination on time.

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

    While on average a flight from St. Louis to Boston is generally $643, our data shows the cheapest flight currently is $155. When looking at the most popular route, (Lambert-St Louis - Boston Logan Intl), you can expect to pay $149 for that flight.

  • What does STL to BOS mean?

    Lambert-St Louis Airport is STL and Boston Logan Intl Airport is BOS. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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

Top 6 airlines flying from St. Louis to Boston

Discover the top 6 airlines that operate flights from St. Louis to Boston. 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 3,145,932 searches. Data last updated March 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$108Average$215FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$140Average$292FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
United AirlinesCheapest$185Average$495FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$196Average$415FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
JetBlueCheapest$226Average$528FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
American AirlinesCheapest$226Average$418FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Search flights from St. Louis to Boston by cabin class

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

Hourly flight availability from St. Louis to Boston

Find hourly flight availability from St. Louis to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 19, 2024.
1%of flight departuresEarly morningMidnight to 6 am
51%of flight departuresMorning6 am to noon
34%of flight departuresAfternoonNoon to 6 pm
14%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to Boston

Explore weekly flight availability from St. Louis to Boston. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 19, 2024.
Sunday7daily flights
Monday6daily flights
Tuesday7daily flights
Wednesday6daily flights
Thursday7daily flights
Friday7daily flights
Saturday3daily flights

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

Cheapflights helps you search for flights from St. Louis to Boston via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from St. Louis to Boston, users can toggle the no change fees filter when performing a flight search.

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

Yes! Start tracking prices for St. Louis to Boston flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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