Find Deals on Flights from Boston Logan International to Lambert-St Louis (BOS - STL)

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Boston Logan International to Lambert-St Louis

(Round-trip)
Depart: Tue Apr 25 2017 Return: Tue May 2 2017 Trip spans 8 days
Delta
Delta
BOS
8:15a
STL
2:05p
5h 50m
1 stop
STL
1:55p
BOS
7:59p
6h 04m
1 stop
Depart: Tue May 9 2017 Return: Wed May 17 2017 Trip spans 9 days
Major Airline
Major Airline
BOS
1:00a
STL
4:05a
3h 05m
1 stop
STL
1:00a
BOS
2:05a
1h 05m
1 stop
Depart: Wed Sep 20 2017 Return: Sat Sep 23 2017 Trip spans 4 days
United
United
BOS
3:30a
STL
8:59p
17h 29m
1 stop
STL
12:45p
BOS
7:09p
6h 24m
1 stop
Depart: Sat May 6 2017 Return: Tue May 9 2017 Trip spans 4 days
American Airlines
American Airlines
BOS
2:10a
STL
7:23a
5h 13m
1 stop
STL
1:59a
BOS
7:09a
5h 10m
1 stop
Depart: Fri May 5 2017 Return: Mon May 8 2017 Trip spans 4 days
Major Airline
Major Airline
BOS
1:00a
STL
4:05a
3h 05m
1 stop
STL
1:00a
BOS
2:05a
1h 05m
1 stop
Depart: Thu May 18 2017 Return: Tue May 23 2017 Trip spans 6 days
Delta
Delta
BOS
3:10a
STL
9:40a
6h 30m
1 stop
STL
1:55p
BOS
7:59p
6h 04m
1 stop
Depart: Tue Sep 26 2017 Return: Sat Sep 30 2017 Trip spans 5 days
United
United
BOS
3:30a
STL
10:37a
7h 07m
1 stop
STL
7:20a
BOS
7:09p
11h 49m
1 stop
Depart: Wed May 10 2017 Return: Tue May 16 2017 Trip spans 7 days
American Airlines
American Airlines
BOS
10:40a
STL
3:58p
5h 18m
1 stop
STL
3:30a
BOS
11:42a
8h 12m
1 stop
Depart: Sun May 7 2017 Return: Tue May 9 2017 Trip spans 3 days
Major Airline
Major Airline
BOS
11:00p
STL
11:20a
12h 20m
1 stop
STL
11:20a
BOS
10:25p
11h 05m
1 stop
Depart: Wed Sep 27 2017 Return: Sat Sep 30 2017 Trip spans 4 days
United
United
BOS
3:30a
STL
10:37a
7h 07m
1 stop
STL
12:45p
BOS
7:09p
6h 24m
1 stop
Depart: Sat May 13 2017 Return: Wed May 17 2017 Trip spans 5 days
American Airlines
American Airlines
BOS
1:00a
STL
7:23a
6h 23m
1 stop
STL
1:59a
BOS
8:47a
6h 48m
1 stop
Depart: Thu May 4 2017 Return: Sun May 7 2017 Trip spans 4 days
Delta
Delta
BOS
4:25a
STL
11:55a
7h 30m
1 stop
STL
1:45a
BOS
7:44a
5h 59m
1 stop
Depart: Tue Apr 18 2017 Return: Tue Apr 25 2017 Trip spans 8 days
Major Airline
Major Airline
BOS
11:00p
STL
11:14a
12h 14m
1 stop
STL
11:20a
BOS
10:25p
11h 05m
1 stop
Depart: Tue May 16 2017 Return: Wed May 17 2017 Trip spans 2 days
American Airlines
American Airlines
BOS
8:59a
STL
3:58p
6h 59m
1 stop
STL
7:05a
BOS
11:42a
4h 37m
1 stop
Depart: Sat Apr 22 2017 Return: Tue Apr 25 2017 Trip spans 4 days
United
United
BOS
5:16a
STL
1:02p
7h 46m
1 stop
STL
2:21a
BOS
8:31a
6h 10m
1 stop
Depart: Wed May 31 2017 Return: Thu Jun 1 2017 Trip spans 2 days
Delta
Delta
BOS
7:42a
STL
1:52p
6h 10m
1 stop
STL
4:35a
BOS
11:49a
7h 14m
1 stop
Depart: Mon Apr 24 2017 Return: Sat Apr 29 2017 Trip spans 6 days
Major Airline
Major Airline
BOS
11:00p
STL
11:14a
12h 14m
1 stop
STL
11:20a
BOS
10:25p
11h 05m
1 stop
Depart: Tue May 23 2017 Return: Sun May 28 2017 Trip spans 6 days
American Airlines
American Airlines
BOS
1:00a
STL
7:23a
6h 23m
1 stop
STL
10:43a
BOS
6:21p
7h 38m
1 stop
Depart: Sat Jun 3 2017 Return: Tue Jun 6 2017 Trip spans 4 days
United
United
BOS
4:45a
STL
10:34a
5h 49m
1 stop
STL
2:12a
BOS
8:39a
6h 27m
1 stop
Depart: Tue May 2 2017 Return: Fri May 5 2017 Trip spans 4 days
Major Airline
Major Airline
BOS
1:00a
STL
4:05a
3h 05m
1 stop
STL
1:00a
BOS
2:05a
1h 05m
1 stop
Select an airline:  Southwest
Direct flights BOS to STL on Southwest
Flight # Depart BOS Arrive STL Sun Mon Tue Wed Thu Fri Sat Valid Between
1988 6:00 am 8:10 am Mar 25 - Apr 22
2579 6:55 am 9:00 am Apr 29 - May 6
1982 7:10 am 9:25 am Mar 27 - Apr 24
2419 7:30 am 9:35 am Apr 25 - Apr 25
417 7:30 am 9:35 am Apr 26 - May 26
2282 8:20 am 10:30 am Apr 30 - May 21
6335 8:45 am 10:55 am Mar 26 - Apr 23
3034 10:45 am 12:45 pm Apr 26 - Jun 2
289 11:00 am 1:00 pm Apr 25 - Apr 25
5122 11:05 am 1:10 pm Apr 29 - May 6
3178 11:35 am 1:40 pm Apr 16 - Apr 23
3178 11:35 am 1:40 pm Mar 26 - Apr 9
3878 1:00 pm 3:10 pm Mar 22 - Apr 24
5211 6:30 pm 8:40 pm Apr 30 - May 21
3463 6:35 pm 8:45 pm Apr 25 - Jun 2
4319 6:40 pm 8:55 pm Mar 26 - Apr 23
3833 6:45 pm 9:00 pm Mar 22 - Apr 24
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an email and someone from our team will get back to you promptly.

Airports
Origin

Boston
$320
Destination

St. Louis
$320