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Cheap flights from St. Louis to Boston from R2 610

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
6:00 - 9:30STL  Lambert-St Louis-BOS Boston Logan Intl
2h 30mdirect
Southwest Logo
19:45 - 0:10BOS  Boston Logan Intl-STL Lambert-St Louis
5h 25m1 stop Baltimore/Washington
R5 368Southwest
Thu, Nov 5 - Mon, Nov 9
Southwest Logo
16:40 - 23:55STL  Lambert-St Louis-BOS Boston Logan Intl
6h 15m2 stops Charlotte Douglas Baltimore/Washington
Southwest Logo
5:10 - 7:15BOS  Boston Logan Intl-STL Lambert-St Louis
3h 05mdirect
R5 450Southwest
Thu, Nov 5 - Mon, Nov 9
Delta Logo
10:00 - 17:30STL  Lambert-St Louis-BOS Boston Logan Intl
6h 30m1 stop New York LaGuardia
Delta Logo
17:40 - 23:56BOS  Boston Logan Intl-STL Lambert-St Louis
7h 16m1 stop Atlanta Hartsfield-Jackson
R5 532Delta
Wed, Nov 4 - Mon, Nov 9
Southwest Logo
16:40 - 23:55STL  Lambert-St Louis-BOS Boston Logan Intl
6h 15m2 stops Charlotte Douglas Baltimore/Washington
Southwest Logo
19:45 - 0:10BOS  Boston Logan Intl-STL Lambert-St Louis
5h 25m1 stop Baltimore/Washington
R5 615Southwest
Thu, Nov 5 - Mon, Nov 9
Southwest Logo
16:40 - 23:55STL  Lambert-St Louis-BOS Boston Logan Intl
6h 15m2 stops Charlotte Douglas Baltimore/Washington
Southwest Logo
13:20 - 19:25BOS  Boston Logan Intl-STL Lambert-St Louis
7h 05m2 stops Baltimore/Washington Pittsburgh
R5 697Southwest
Thu, Nov 12 - Mon, Nov 16
Southwest Logo
6:30 - 16:50STL  Lambert-St Louis-BOS Boston Logan Intl
9h 20m1 stop Denver Intl
Southwest Logo
17:10 - 19:20BOS  Boston Logan Intl-STL Lambert-St Louis
3h 10mdirect
R5 861Southwest
Fri, Dec 4 - Mon, Dec 7
United Airlines Logo
7:30 - 14:35STL  Lambert-St Louis-BOS Boston Logan Intl
6h 05m1 stop Newark
United Airlines Logo
15:01 - 19:23BOS  Boston Logan Intl-STL Lambert-St Louis
5h 22m1 stop Chicago O'Hare Intl
R5 943United Airlines
Wed, Oct 21 - Fri, Oct 30
Delta Logo
7:00 - 13:44STL  Lambert-St Louis-BOS Boston Logan Intl
5h 44m1 stop Atlanta Hartsfield-Jackson
Delta Logo
8:00 - 13:20BOS  Boston Logan Intl-STL Lambert-St Louis
6h 20m1 stop Atlanta Hartsfield-Jackson
R5 976Delta
Mon, Oct 26 - Tue, Oct 27
Delta Logo
15:15 - 20:56STL  Lambert-St Louis-BOS Boston Logan Intl
4h 41m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:27 - 9:19BOS  Boston Logan Intl-STL Lambert-St Louis
4h 52m1 stop Detroit Metropolitan Wayne County
R6 025Delta
Thu, Nov 26 - Fri, Dec 4
Southwest Logo
5:30 - 12:30STL  Lambert-St Louis-BOS Boston Logan Intl
6h 00m1 stop Dallas Love Field
Southwest Logo
15:30 - 21:55BOS  Boston Logan Intl-STL Lambert-St Louis
7h 25m2 stops Baltimore/Washington Nashville Intl
R6 107Southwest
Fri, Dec 4 - Mon, Dec 7

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United Airlines flights from St. Louis to Boston

Our best United Airlines deals on St. Louis to Boston flight tickets
United Airlines
Oct 21
STL7:30Lambert-St Louis
6h 05m
1 stop
BOS14:35Boston Logan Intl
Oct 30
BOS15:01Boston Logan Intl
5h 22m
1 stop
STL19:23Lambert-St Louis
R5 943
United Airlines
Oct 20
STL7:30Lambert-St Louis
6h 05m
1 stop
BOS14:35Boston Logan Intl
Oct 21
BOS10:51Boston Logan Intl
6h 09m
1 stop
STL16:00Lambert-St Louis
R7 256
United Airlines
Nov 4
STL6:00Lambert-St Louis
6h 31m
1 stop
BOS13:31Boston Logan Intl
Nov 4
BOS18:36Boston Logan Intl
5h 48m
1 stop
STL23:24Lambert-St Louis
R7 338

Delta flights from St. Louis to Boston

Our best Delta deals on St. Louis to Boston flight tickets
Delta
Nov 4
STL10:00Lambert-St Louis
6h 30m
1 stop
BOS17:30Boston Logan Intl
Nov 9
BOS17:40Boston Logan Intl
7h 16m
1 stop
STL23:56Lambert-St Louis
R5 532
Delta
Oct 26
STL7:00Lambert-St Louis
5h 44m
1 stop
BOS13:44Boston Logan Intl
Oct 27
BOS8:00Boston Logan Intl
6h 20m
1 stop
STL13:20Lambert-St Louis
R5 976
Delta
Nov 26
STL15:15Lambert-St Louis
4h 41m
1 stop
BOS20:56Boston Logan Intl
Dec 4
BOS5:27Boston Logan Intl
4h 52m
1 stop
STL9:19Lambert-St Louis
R6 025

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

Thu 5/11

6:00-9:30

Nonstop2h 30m

Boston Logan Intl

Mon 9/11

19:45-0:10

1 stop5h 25m

R5 368

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Thu 5/11

16:40-23:55

2 stops6h 15m

Boston Logan Intl

Mon 9/11

5:10-7:15

Nonstop3h 05m

R5 450

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Wed 4/11

10:00-17:30

1 stop6h 30m

Boston Logan Intl

Mon 9/11

17:40-23:56

1 stop7h 16m

R5 532

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Thu 5/11

16:40-23:55

2 stops6h 15m

Boston Logan Intl

Mon 9/11

19:45-0:10

1 stop5h 25m

R5 615

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Thu 12/11

16:40-23:55

2 stops6h 15m

Boston Logan Intl

Mon 16/11

13:20-19:25

2 stops7h 05m

R5 697

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Fri 4/12

6:30-16:50

1 stop9h 20m

Boston Logan Intl

Mon 7/12

17:10-19:20

Nonstop3h 10m

R5 861

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Wed 21/10

7:30-14:35

1 stop6h 05m

Boston Logan Intl

Fri 30/10

15:01-19:23

1 stop5h 22m

R5 943

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Mon 26/10

7:00-13:44

1 stop5h 44m

Boston Logan Intl

Tue 27/10

8:00-13:20

1 stop6h 20m

R5 976

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Thu 26/11

15:15-20:56

1 stop4h 41m

Boston Logan Intl

Fri 4/12

5:27-9:19

1 stop4h 52m

R6 025

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Fri 4/12

5:30-12:30

1 stop6h 00m

Boston Logan Intl

Mon 7/12

15:30-21:55

2 stops7h 25m

R6 107

Flights are sorted by cheapest return flights 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 747 to R9 390.
The lowest price recently found on this route was R5 368.

What is the cheapest month to fly to Boston?

In general, September 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 256. If you aren’t able to travel during the month of September, then book flights to Boston from St. Louis during December instead. Flights to Boston in December, while not as cheap as those in September, still average around R7 289.

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 141 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 R6 731 on momondo.

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

As of September 2026, prices for St. Louis to Boston flights are approximately 49% 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 610

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 610. The best return flight deal from St. Louis to Boston found on momondo in the last 72 hours is R5 368.
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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