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Cheap flights from St. Louis to Boston (STL - BOS) from $47

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 6/4. 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
May 11 — May 181
From?
To?
Sat 5/11
Sat 5/18
1 adult, Economy
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The best prices from Lambert-St Louis to Boston Logan Intl are usually found in February or January, booked 63 days in advance, depart on a Wednesday or Saturday 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 May 6, 2024.

Popular in

April

Cheapest in

February

Round-trip from

$218

One-way from

$121
High demand for flights, 14% potential price rise
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Best time to find cheap flights, 25% potential price drop
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From Lambert-St Louis to Boston Logan Intl
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One-way flight from Lambert-St Louis to Boston Logan Intl
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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 42 days before your planned departure. Booking around this time can save you about 91% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $544 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $658.

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

Our data shows that February 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 $127. Due to multiple factors, prepare for potentially higher prices in April.

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 13% on your trip compared to booking a flight at noon.

Cheap Frontier flights from St. Louis to Boston

Explore cheap flight options specifically provided by Frontier 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 2,689,106 searches. Data last updated May 6, 2024.
Find some of the cheapest Frontier flights traveling from St. Louis to Boston. Make sure to double check the flight details before booking.
Sat 6/19:29 pmSTL - BOS
1 stop10h 58mFrontier
Wed 6/59:16 amBOS - STL
1 stop22h 51mFrontier
Deal found 5/5$109
Sat 6/19:29 pmSTL - BOS
1 stop10h 58mFrontier
Sat 6/810:12 amBOS - STL
1 stop21h 55mFrontier
Deal found 5/4$131
Sat 6/19:29 pmSTL - BOS
1 stop10h 58mFrontier
Wed 6/59:16 amBOS - STL
1 stop22h 51mFrontier
Deal found 5/5$138
Tue 6/117:44 pmSTL - BOS
1 stop11h 32mFrontier
Sat 6/1510:12 amBOS - STL
1 stop21h 55mFrontier
Deal found 5/5$143
Fri 5/177:44 pmSTL - BOS
1 stop12h 05mFrontier
Mon 5/2010:04 amBOS - STL
1 stop11h 22mFrontier
Deal found 5/5$154
Fri 5/177:44 pmSTL - BOS
2 stops13h 55mFrontier
Mon 5/2010:04 amBOS - STL
1 stop11h 22mFrontier
Deal found 5/5$159
Thu 6/67:44 pmSTL - BOS
1 stop11h 32mFrontier
Mon 6/109:16 amBOS - STL
1 stop8h 58mFrontier
Deal found 5/6$230
Fri 6/217:44 pmSTL - BOS
1 stop12h 25mFrontier
Mon 6/249:16 amBOS - STL
1 stop8h 58mFrontier
Deal found 5/6$246
Sat 5/114:37 pmSTL - BOS
1 stop14h 31mFrontier
Mon 5/139:08 amBOS - STL
1 stop12h 03mFrontier
Deal found 5/5$250

  • One of the most popular airlines traveling from St. Louis to Boston is Frontier. Flights from Frontier traveling this route typically cost $522.45 RT. This price is typically 21% 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, Frontier flights are 7% more popular than any other airline flying that same route.

Cheap Spirit Airlines flights from St. Louis to Boston

Explore cheap flight options specifically provided by Spirit 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 2,689,106 searches. Data last updated May 6, 2024.
Have a look at some of the cheapest available Spirit 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 6/410:34 amSTL - BOS
1 stop12h 13mSpirit Airlines
Tue 6/116:10 amBOS - STL
1 stop9h 13mSpirit Airlines
Deal found 5/5$117
Tue 6/410:34 amSTL - BOS
2 stops22h 17mSpirit Airlines
Tue 6/116:10 amBOS - STL
1 stop9h 13mSpirit Airlines
Deal found 5/5$136
Tue 6/410:34 amSTL - BOS
1 stop12h 13mSpirit Airlines
Mon 6/109:19 pmBOS - STL
2 stops14h 38mSpirit Airlines
Deal found 5/5$148
Tue 6/410:34 amSTL - BOS
3 stops33h 14mSpirit Airlines
Tue 6/116:10 amBOS - STL
1 stop9h 13mSpirit Airlines
Deal found 5/5$149
Tue 6/410:34 amSTL - BOS
1 stop12h 13mSpirit Airlines
Mon 6/107:46 pmBOS - STL
1 stop16h 11mSpirit Airlines
Deal found 5/5$158
Tue 6/410:34 amSTL - BOS
2 stops22h 17mSpirit Airlines
Mon 6/109:19 pmBOS - STL
2 stops14h 38mSpirit Airlines
Deal found 5/5$161
Sat 6/15:15 pmSTL - BOS
1 stop6h 42mSpirit Airlines
Mon 6/36:10 amBOS - STL
1 stop28h 29mSpirit Airlines
Deal found 5/5$167
Sat 6/15:15 pmSTL - BOS
1 stop6h 42mSpirit Airlines
Mon 6/37:36 pmBOS - STL
2 stops19h 01mSpirit Airlines
Deal found 5/5$168
Tue 6/410:34 amSTL - BOS
3 stops33h 14mSpirit Airlines
Mon 6/109:19 pmBOS - STL
2 stops14h 38mSpirit Airlines
Deal found 5/5$174

  • If you’re traveling from St. Louis to Boston, one of the more common airlines traveling that route is Spirit Airlines. St. Louis to Boston flights are typically 28% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $413.80 RT. The cheapest Spirit Airlines flight found for this route was $226. When traveling from St. Louis to Boston on Spirit Airlines, the most popular airport to depart from is Lambert-St Louis Airport and the most popular airport to arrive at is Boston Logan Intl Airport. When flying from St. Louis to Boston, Spirit Airlines flights are 3% more popular than any other airline flying that same route.

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

Find cheap flight options from St. Louis to Boston specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,689,106 searches. Prices were last updated on May 6, 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 6/19:29 pmSTL - BOS
1 stop10h 58mFrontier
Wed 6/59:16 amBOS - STL
1 stop22h 51mFrontier
Deal found 5/5$109
Tue 6/410:34 amSTL - BOS
1 stop12h 13mSpirit Airlines
Tue 6/116:10 amBOS - STL
1 stop9h 13mSpirit Airlines
Deal found 5/5$117
Sat 6/19:29 pmSTL - BOS
1 stop10h 58mFrontier
Sat 6/810:12 amBOS - STL
1 stop21h 55mFrontier
Deal found 5/4$131
Tue 6/410:34 amSTL - BOS
2 stops22h 17mSpirit Airlines
Tue 6/116:10 amBOS - STL
1 stop9h 13mSpirit Airlines
Deal found 5/5$136
Sat 6/19:29 pmSTL - BOS
1 stop10h 58mFrontier
Wed 6/59:16 amBOS - STL
1 stop22h 51mFrontier
Deal found 5/6$138
Tue 6/117:44 pmSTL - BOS
1 stop11h 32mFrontier
Sat 6/1510:12 amBOS - STL
1 stop21h 55mFrontier
Deal found 5/5$143
Tue 6/410:34 amSTL - BOS
1 stop12h 13mSpirit Airlines
Mon 6/109:19 pmBOS - STL
2 stops14h 38mSpirit Airlines
Deal found 5/5$148
Tue 6/410:34 amSTL - BOS
3 stops33h 14mSpirit Airlines
Tue 6/116:10 amBOS - STL
1 stop9h 13mSpirit Airlines
Deal found 5/5$149
Fri 5/177:44 pmSTL - BOS
1 stop12h 05mFrontier
Mon 5/2010:04 amBOS - STL
1 stop11h 22mFrontier
Deal found 5/5$154

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 2,689,106 searches. Data last updated May 6, 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 6/19:29 pmSTL - BOS
1 stop10h 58mFrontier
Wed 6/59:16 amBOS - STL
1 stop22h 51mFrontier
Deal found 5/5$109
Tue 6/410:34 amSTL - BOS
1 stop12h 13mSpirit Airlines
Tue 6/116:10 amBOS - STL
1 stop9h 13mSpirit Airlines
Deal found 5/5$117
Sat 6/19:29 pmSTL - BOS
1 stop10h 58mFrontier
Sat 6/810:12 amBOS - STL
1 stop21h 55mFrontier
Deal found 5/4$131
Tue 6/410:34 amSTL - BOS
2 stops22h 17mSpirit Airlines
Tue 6/116:10 amBOS - STL
1 stop9h 13mSpirit Airlines
Deal found 5/5$136
Sat 6/19:29 pmSTL - BOS
1 stop10h 58mFrontier
Wed 6/59:16 amBOS - STL
1 stop22h 51mFrontier
Deal found 5/6$138
Tue 6/117:44 pmSTL - BOS
1 stop11h 32mFrontier
Sat 6/1510:12 amBOS - STL
1 stop21h 55mFrontier
Deal found 5/5$143
Tue 6/410:34 amSTL - BOS
1 stop12h 13mSpirit Airlines
Mon 6/109:19 pmBOS - STL
2 stops14h 38mSpirit Airlines
Deal found 5/5$148
Tue 6/410:34 amSTL - BOS
3 stops33h 14mSpirit Airlines
Tue 6/116:10 amBOS - STL
1 stop9h 13mSpirit Airlines
Deal found 5/5$149
Fri 5/177:44 pmSTL - BOS
1 stop12h 05mFrontier
Mon 5/2010:04 amBOS - STL
1 stop11h 22mFrontier
Deal found 5/5$154

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 2,689,106 searches. Data last updated May 6, 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.
Wed 6/266:51 pmSTL - BOS
Nonstop2h 43mAmerican Airlines
Wed 7/37:00 amBOS - STL
Nonstop3h 07mAmerican Airlines
Deal found 5/5$313
Tue 8/1311:05 amSTL - BOS
Nonstop2h 38mAmerican Airlines
Sat 8/177:00 amBOS - STL
Nonstop3h 14mAmerican Airlines
Deal found 5/5$317
Tue 6/410:30 amSTL - BOS
Nonstop2h 49mAmerican Airlines
Tue 6/114:14 pmBOS - STL
Nonstop3h 00mAmerican Airlines
Deal found 5/5$333
Sat 9/147:00 pmSTL - BOS
Nonstop2h 40mAmerican Airlines
Thu 9/197:00 amBOS - STL
Nonstop3h 08mAmerican Airlines
Deal found 5/4$336
Wed 9/187:00 pmSTL - BOS
Nonstop2h 40mAmerican Airlines
Sun 9/227:00 amBOS - STL
Nonstop3h 08mAmerican Airlines
Deal found 5/5$347
Mon 8/126:56 pmSTL - BOS
Nonstop2h 38mAmerican Airlines
Sat 8/177:00 amBOS - STL
Nonstop3h 14mAmerican Airlines
Deal found 5/5$351
Fri 8/236:56 pmSTL - BOS
Nonstop2h 38mAmerican Airlines
Mon 8/267:00 amBOS - STL
Nonstop3h 14mAmerican Airlines
Deal found 5/4$352
Mon 10/281:38 pmSTL - BOS
Nonstop2h 29mAmerican Airlines
Fri 11/17:00 amBOS - STL
Nonstop3h 15mAmerican Airlines
Deal found 5/5$355
Tue 6/41:40 pmSTL - BOS
Nonstop2h 49mAmerican Airlines
Mon 6/104:14 pmBOS - STL
Nonstop3h 00mAmerican Airlines
Deal found 5/5$357

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 2,689,106 searches. Data last updated May 6, 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.
Mon 5/139:11 pmSTL - BOS
1 stop9h 57mMultiple Airlines
Fri 5/178:59 pmBOS - STL
1 stop14h 29mMultiple Airlines
Deal found 5/5$215
Tue 5/142:35 pmSTL - BOS
3 stops22h 47mSpirit Airlines
Fri 5/178:59 pmBOS - STL
1 stop14h 29mSpirit Airlines
Deal found 5/5$224
Tue 5/142:35 pmSTL - BOS
3 stops22h 47mSpirit Airlines
Fri 5/178:59 pmBOS - STL
2 stops20h 26mSpirit Airlines
Deal found 5/5$244
Sat 5/114:37 pmSTL - BOS
1 stop14h 31mFrontier
Mon 5/139:08 amBOS - STL
1 stop12h 03mFrontier
Deal found 5/5$250
Mon 5/134:05 pmSTL - BOS
3 stops30h 21mSpirit Airlines
Fri 5/178:59 pmBOS - STL
1 stop14h 29mSpirit Airlines
Deal found 5/5$257
Mon 5/134:05 pmSTL - BOS
3 stops30h 21mSpirit Airlines
Fri 5/1710:27 pmBOS - STL
2 stops18h 58mSpirit Airlines
Deal found 5/5$266
Wed 5/155:56 pmSTL - BOS
1 stop14h 30mMultiple Airlines
Sun 5/196:10 amBOS - STL
1 stop12h 19mMultiple Airlines
Deal found 5/5$269
Sun 5/127:16 pmSTL - BOS
1 stop11h 52mFrontier
Thu 5/1610:26 amBOS - STL
1 stop21h 42mFrontier
Deal found 5/5$274
Tue 5/147:30 amSTL - BOS
2 stops7h 25mMultiple Airlines
Fri 5/178:59 pmBOS - STL
1 stop14h 29mMultiple Airlines
Deal found 5/5$291

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 2,689,106 searches. Data last updated May 6, 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.
Tue 6/410:34 amSTL - BOS
1 stop12h 13mSpirit Airlines
Deal found 5/5$47
Wed 5/299:10 pmSTL - BOS
1 stop10h 30mFrontier
Deal found 5/5$56
Wed 5/299:10 pmSTL - BOS
1 stop10h 30mFrontier
Deal found 5/5$57
Tue 6/410:34 amSTL - BOS
2 stops22h 17mSpirit Airlines
Deal found 5/5$59
Tue 6/410:34 amSTL - BOS
3 stops33h 14mSpirit Airlines
Deal found 5/5$73
Tue 6/1111:57 amSTL - BOS
2 stops25h 28mSpirit Airlines
Deal found 5/5$74
Fri 5/317:44 pmSTL - BOS
1 stop13h 58mFrontier
Deal found 5/5$79
Wed 5/155:56 pmSTL - BOS
1 stop14h 30mFrontier
Deal found 5/5$85
Mon 5/139:11 pmSTL - BOS
1 stop9h 57mFrontier
Deal found 5/6$86

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 2,689,106 searches. Data last updated May 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$109 - $267

Route

Depart

Return

Price

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Sat 6/1

1 stop10h 58m

Boston Logan Intl

Wed 6/5

1 stop22h 51m

$109

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Tue 6/4

1 stop12h 13m

Boston Logan Intl

Tue 6/11

1 stop9h 13m

$117

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Sat 6/1

1 stop10h 58m

Boston Logan Intl

Sat 6/8

1 stop21h 55m

$131

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Tue 6/4

2 stops22h 17m

Boston Logan Intl

Tue 6/11

1 stop9h 13m

$136

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Sat 6/1

1 stop10h 58m

Boston Logan Intl

Wed 6/5

1 stop22h 51m

$138

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Tue 6/4

1 stop12h 13m

Boston Logan Intl

Mon 6/10

2 stops14h 38m

$148

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Fri 5/31

1 stop13h 58m

Boston Logan Intl

Sun 6/2

1 stop7h 33m

$197

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Wed 6/5

1 stop7h 18m

Boston Logan Intl

Tue 6/11

1 stop5h 47m

$264

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Wed 6/26

Nonstop2h 43m

Boston Logan Intl

Wed 7/3

1 stop8h 56m

$267

Flights are sorted by cheapest first

Deals found on 5/5

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 May 3, 2024.
The best time to book flights from St. Louis to Boston is 63 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 May 5, 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 afternoons 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 $68 while a round-trip flight costs $167. Price data was last updated on April 28, 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 July 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

$291

May

$276

June

$319

July

$328

August

$285

September

$257

October

$261

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 May 6, 2024.
Peruse reviews from past customers who have flown with Frontier, Spirit Airlines and Delta 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.
Alaska Airlines
8.1
Very good
9,137 reviews
Check prices

Crew

8.6

Food

7.3

Comfort

7.9

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines
8.1
Very good
9,137 reviews
Alaska Airlines
8.1
Very good
9,137 reviews
Check prices

Crew

8.6

Food

7.3

Comfort

7.9

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Delta
8.1
Very good
10,818 reviews
Alaska Airlines
8.1
Very good
9,137 reviews
Check prices

Crew

8.6

Food

7.3

Comfort

7.9

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

United Airlines
7.4
Good
11,090 reviews
Alaska Airlines
8.1
Very good
9,137 reviews
Check prices

Crew

8.6

Food

7.3

Comfort

7.9

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

American Airlines
7.3
Good
14,697 reviews
Alaska Airlines
8.1
Very good
9,137 reviews
Check prices

Crew

8.6

Food

7.3

Comfort

7.9

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Sun Country Air
7.3
Good
642 reviews
Alaska Airlines
8.1
Very good
9,137 reviews
Check prices

Crew

8.6

Food

7.3

Comfort

7.9

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

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 38m 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 $200 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Boston for under $200. The cheapest flight booked recently is on Frontier for just $109, but on average you can expect to pay $156.

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

    Cheapflights has at least 20 direct flights from St. Louis to Boston under $400. A good price for a nonstop flight from St. Louis to Boston is less than $372.

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

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

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

    The Lambert-St Louis to Boston Logan Intl flight path was viewed by 4 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    According to our current data, Frontier ($109), and Spirit Airlines ($117) offers the cheapest pricing from St. Louis to Boston. Users have found that Frontier is 73% cheaper than the other options available to this destination.

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

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $47. Frontier flights start at $56 while deals on Delta start at $132 one-way.

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

    The most popular airlines flying from St. Louis to Boston are American Airlines, JetBlue and Delta. Something to consider prior to booking your flight.

  • 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 (89%), Republic Airways (89%) or Qatar Airways (88%) 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 $982, our data shows the cheapest flight currently is $151. When looking at the most popular route, (Lambert-St Louis - Boston Logan Intl), you can expect to pay $117 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.

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

    The amount of baggage you can bring on your St. Louis to Boston 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 St. Louis to Boston with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Boston 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 St. Louis to Boston that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Boston 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 St. Louis to Boston that allow pets onboard?

    Many airlines flying from St. Louis to Boston 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 St. Louis to Boston?

    Yes, you can often find last-minute deals on St. Louis to Boston 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 St. Louis to Boston flight deals updated?

    The St. Louis to Boston flight deals you see on this page were last updated on 5/6.

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

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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 2,689,106 searches. Data last updated May 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$106Average$215FlexibilityNo cancel feeOn-time62%
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Spirit AirlinesCheapest$130Average$281FlexibilityNo cancel feeOn-time65%
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United AirlinesCheapest$188Average$466FlexibilityNo cancel feeOn-time69%
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DeltaCheapest$196Average$424FlexibilityNo cancel feeOn-timeN/A
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JetBlueCheapest$226Average$522FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
American AirlinesCheapest$226Average$414FlexibilityNo cancel feeOn-time71%
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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.
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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 May 6, 2024.
1%of flight departuresEarly morningMidnight to 6 am
44%of flight departuresMorning6 am to noon
41%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 May 6, 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.

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

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 Boston from St. Louis.

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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