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Cheap flights from St. Louis to Boston from R2 654

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from St. Louis to Boston

Cheap return flights

Enter your travel dates to find the best prices.
Southwest Logo
10:15 - 13:45STL  Lambert-St Louis-BOS Boston Logan Intl
2h 30mdirect
Southwest Logo
12:55 - 14:55BOS  Boston Logan Intl-STL Lambert-St Louis
3h 00mdirect
R5 291Southwest
Wed, Nov 25 - Fri, Nov 27
Southwest Logo
19:55 - 23:30STL  Lambert-St Louis-BOS Boston Logan Intl
2h 35mdirect
Southwest Logo
17:10 - 0:10BOS  Boston Logan Intl-STL Lambert-St Louis
8h 00m1 stop Baltimore/Washington
R5 458Southwest
Wed, Nov 25 - Fri, Nov 27
Southwest Logo
18:10 - 21:45STL  Lambert-St Louis-BOS Boston Logan Intl
2h 35mdirect
Southwest Logo
17:05 - 19:15BOS  Boston Logan Intl-STL Lambert-St Louis
3h 10mdirect
R5 525Southwest
Thu, Dec 3 - Mon, Dec 7
Southwest Logo
18:10 - 21:45STL  Lambert-St Louis-BOS Boston Logan Intl
2h 35mdirect
Southwest Logo
8:15 - 19:10BOS  Boston Logan Intl-STL Lambert-St Louis
11h 55m2 stops Austin Bergstrom Omaha Eppley Airfield
R5 541Southwest
Mon, Dec 14 - Mon, Dec 21
Delta Logo
10:05 - 16:17STL  Lambert-St Louis-BOS Boston Logan Intl
5h 12m1 stop Atlanta Hartsfield-Jackson
Delta Logo
16:57 - 20:29BOS  Boston Logan Intl-STL Lambert-St Louis
4h 32m1 stop Detroit Metropolitan Wayne County
R5 625Delta
Mon, Nov 23 - Fri, Nov 27
Delta Logo
10:14 - 15:54STL  Lambert-St Louis-BOS Boston Logan Intl
4h 40m1 stop Detroit Metropolitan Wayne County
Delta Logo
19:04 - 0:05BOS  Boston Logan Intl-STL Lambert-St Louis
6h 01m1 stop Atlanta Hartsfield-Jackson
R5 642Delta
Thu, Dec 3 - Mon, Dec 7
Southwest Logo
16:30 - 22:15STL  Lambert-St Louis-BOS Boston Logan Intl
4h 45m1 stop Nashville Intl
Southwest Logo
13:20 - 19:25BOS  Boston Logan Intl-STL Lambert-St Louis
7h 05m2 stops Baltimore/Washington Pittsburgh
R5 708Southwest
Thu, Dec 3 - Mon, Dec 7
Southwest Logo
19:55 - 23:30STL  Lambert-St Louis-BOS Boston Logan Intl
2h 35mdirect
Southwest Logo
5:30 - 11:00BOS  Boston Logan Intl-STL Lambert-St Louis
6h 30m2 stops Baltimore/Washington Chicago Midway
R5 775Southwest
Wed, Nov 25 - Wed, Dec 2
Southwest Logo
14:20 - 21:55STL  Lambert-St Louis-BOS Boston Logan Intl
6h 35m2 stops Atlanta Hartsfield-Jackson Baltimore/Washington
Southwest Logo
8:15 - 19:10BOS  Boston Logan Intl-STL Lambert-St Louis
11h 55m2 stops Austin Bergstrom Omaha Eppley Airfield
R5 792Southwest
Mon, Dec 14 - Mon, Dec 21
Southwest Logo
5:40 - 10:55STL  Lambert-St Louis-BOS Boston Logan Intl
4h 15m1 stop Chicago Midway
Southwest Logo
20:00 - 10:05BOS  Boston Logan Intl-STL Lambert-St Louis
15h 05m2 stops Baltimore/Washington Orlando
R5 809Southwest
Mon, Feb 15 - Mon, Feb 22

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Delta flights from St. Louis to Boston

Our best Delta deals on St. Louis to Boston flight tickets
Delta
Nov 23
STL18:26Lambert-St Louis
4h 28m
1 stop
BOS23:54Boston Logan Intl
Dec 3
BOS7:00Boston Logan Intl
5h 51m
1 stop
STL11:51Lambert-St Louis
R5 625
Delta
Dec 3
STL10:14Lambert-St Louis
4h 40m
1 stop
BOS15:54Boston Logan Intl
Dec 7
BOS19:04Boston Logan Intl
6h 01m
1 stop
STL0:05Lambert-St Louis
R5 642
Delta
Nov 26
STL6:00Lambert-St Louis
6h 42m
1 stop
BOS13:42Boston Logan Intl
Dec 1
BOS5:27Boston Logan Intl
4h 52m
1 stop
STL9:19Lambert-St Louis
R5 859

Southwest flights from St. Louis to Boston

Our best Southwest deals on St. Louis to Boston flight tickets
Southwest
Nov 25
STL10:15Lambert-St Louis
2h 30m
BOS13:45Boston Logan Intl
Nov 27
BOS12:55Boston Logan Intl
3h 00m
STL14:55Lambert-St Louis
R5 291
Southwest
Nov 25
STL19:55Lambert-St Louis
2h 35m
BOS23:30Boston Logan Intl
Nov 27
BOS17:10Boston Logan Intl
8h 00m
1 stop
STL0:10Lambert-St Louis
R5 458
Southwest
Dec 3
STL18:10Lambert-St Louis
2h 35m
BOS21:45Boston Logan Intl
Dec 7
BOS17:05Boston Logan Intl
3h 10m
STL19:15Lambert-St Louis
R5 525

momondo Fare Finder

 
Use the filters below to find and compare flights from St. Louis to Boston that are best for you.

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Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Wed 25/11

10:15-13:45

Nonstop2h 30m

Boston Logan Intl

Fri 27/11

12:55-14:55

Nonstop3h 00m

R5 291

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Wed 25/11

19:55-23:30

Nonstop2h 35m

Boston Logan Intl

Fri 27/11

17:10-0:10

1 stop8h 00m

R5 458

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Thu 3/12

18:10-21:45

Nonstop2h 35m

Boston Logan Intl

Mon 7/12

17:05-19:15

Nonstop3h 10m

R5 525

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Mon 14/12

18:10-21:45

Nonstop2h 35m

Boston Logan Intl

Mon 21/12

8:15-19:10

2 stops11h 55m

R5 541

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Mon 23/11

10:05-16:17

1 stop5h 12m

Boston Logan Intl

Fri 27/11

16:57-20:29

1 stop4h 32m

R5 625

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Thu 3/12

10:14-15:54

1 stop4h 40m

Boston Logan Intl

Mon 7/12

19:04-0:05

1 stop6h 01m

R5 642

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Thu 3/12

16:30-22:15

1 stop4h 45m

Boston Logan Intl

Mon 7/12

13:20-19:25

2 stops7h 05m

R5 708

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Wed 25/11

19:55-23:30

Nonstop2h 35m

Boston Logan Intl

Wed 2/12

5:30-11:00

2 stops6h 30m

R5 775

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Mon 14/12

14:20-21:55

2 stops6h 35m

Boston Logan Intl

Mon 21/12

8:15-19:10

2 stops11h 55m

R5 792

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Mon 15/2

5:40-10:55

1 stop4h 15m

Boston Logan Intl

Mon 22/2

20:00-10:05

2 stops15h 05m

R5 809

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Boston from

How to get the cheapest flight ticket from St. Louis to Boston

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between St. Louis and Boston?

Prices are currently low for flights on this route.

Typical prices usually range from R6 526 to R10 632.
The lowest price recently found on this route was R5 291.

What is the cheapest month to fly to Boston?

In general, December is the cheapest month to fly from St. Louis to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around R7 411. If you aren’t able to travel during the month of December, then book flights to Boston from St. Louis during September instead. Flights to Boston in September, while not as cheap as those in December, still average around R7 461.

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

You are more likely to see cheaper flights to Boston from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around R8 287 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from St. Louis for as low as R7 010 on momondo.

How have St. Louis to Boston flight prices changed over time?

As of November 2026, prices for St. Louis to Boston flights are approximately 25% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Boston

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Boston according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap St. Louis to Boston (STL to BOS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Boston

Best price found

R2 654

Direct flights

Every day

Airports in Boston

1 airport
The best one-way flight to Boston from St. Louis in the past 72 hours is R2 654. The best return flight deal from St. Louis to Boston found on momondo in the last 72 hours is R5 291.
Direct flights go from St. Louis to Boston every day.
There is 1 airport in Boston. From St. Louis there are direct flights to Boston Logan Intl (BOS).
Search flight deals

Frequently asked questions about flying from St. Louis to Boston

  • How far is Lambert-St Louis to Boston Logan Intl by plane?

    There are 1665,7 km between Lambert-St Louis and Boston Logan Intl.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Boston Logan Intl Airport?

    Prices for flights from Lambert-St Louis Airport to Boston Logan Intl Airport were last updated today.

  • How old do you have to be to fly from Lambert-St Louis Airport to Boston Logan Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The required travel and health documents for your Boston Logan Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Boston Logan Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from St. Louis to Boston?

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Danvers
Brookline
Hampton Beach

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Boston?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Boston for you.

Can I find flights from St. Louis to Boston with flexible booking policies on momondo?

Yes. All flights to Boston from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from St. Louis to Boston?

momondo helps you find the best flight between St. Louis and Boston by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from St. Louis to Boston right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Boston from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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