Find Cheap 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: Mon Aug 21 2017 Return: Tue Aug 22 2017 Trip spans 2 days
American Airlines
American Airlines
BOS
12:00a
STL
5:50a
5h 50m
1 stop
STL
12:00a
BOS
4:56a
4h 56m
1 stop
Depart: Thu Jul 13 2017 Return: Tue Jul 18 2017 Trip spans 6 days
Delta
Delta
BOS
12:00a
STL
7:49a
7h 49m
1 stop
STL
12:00a
BOS
8:18a
8h 18m
1 stop
Depart: Mon Jul 17 2017 Return: Tue Jul 18 2017 Trip spans 2 days
Major Airline
Major Airline
BOS
12:00a
STL
3:05a
3h 05m
1 stop
STL
12:00a
BOS
1:05a
1h 05m
1 stop
Depart: Sat Jul 15 2017 Return: Tue Jul 18 2017 Trip spans 4 days
Multiple Airlines
Multiple Airlines
BOS
12:00a
STL
5:06a
5h 06m
1 stop
STL
12:00a
BOS
5:00a
5h 00m
1 stop
Depart: Sat Jul 29 2017 Return: Tue Aug 1 2017 Trip spans 4 days
United
United
BOS
12:00a
STL
9:32a
9h 32m
1 stop
STL
12:00a
BOS
6:13a
6h 13m
1 stop
Depart: Wed Oct 25 2017 Return: Mon Oct 30 2017 Trip spans 6 days
American Airlines
American Airlines
BOS
12:00a
STL
5:33a
5h 33m
1 stop
STL
12:00a
BOS
5:08a
5h 08m
1 stop
Depart: Fri Jul 14 2017 Return: Tue Jul 18 2017 Trip spans 5 days
Delta
Delta
BOS
12:00a
STL
6:17a
6h 17m
1 stop
STL
12:00a
BOS
8:01a
8h 01m
1 stop
Depart: Fri Jul 14 2017 Return: Sat Sep 2 2017 Trip spans 51 days
Major Airline
Major Airline
BOS
12:00a
STL
12:02p
12h 02m
3 stops
STL
12:00a
BOS
3:03p
15h 03m
3 stops
Depart: Thu Jul 6 2017 Return: Mon Jul 10 2017 Trip spans 5 days
American Airlines
American Airlines
BOS
12:00a
STL
6:23a
6h 23m
1 stop
STL
12:00a
BOS
5:01a
5h 01m
1 stop
Depart: Wed Jul 12 2017 Return: Wed Jul 19 2017 Trip spans 8 days
Delta
Delta
BOS
12:00a
STL
7:32a
7h 32m
1 stop
STL
12:00a
BOS
6:53a
6h 53m
1 stop
Depart: Sat Sep 16 2017 Return: Sun Sep 17 2017 Trip spans 2 days
United
United
BOS
12:00a
STL
5:03a
5h 03m
1 stop
STL
12:00a
BOS
7:20a
7h 20m
1 stop
Depart: Tue Jul 11 2017 Return: Wed Jul 19 2017 Trip spans 9 days
Multiple Airlines
Multiple Airlines
BOS
12:00a
STL
4:51a
4h 51m
1 stop
STL
12:00a
BOS
6:53a
6h 53m
1 stop
Depart: Mon Jul 10 2017 Return: Wed Jul 12 2017 Trip spans 3 days
Major Airline
Major Airline
BOS
12:00a
STL
12:02p
12h 02m
3 stops
STL
12:00a
BOS
11:06a
11h 06m
3 stops
Depart: Tue Oct 3 2017 Return: Thu Oct 5 2017 Trip spans 3 days
American Airlines
American Airlines
BOS
12:00a
STL
4:43a
4h 43m
1 stop
STL
12:00a
BOS
6:33a
6h 33m
1 stop
Depart: Thu Jul 13 2017 Return: Wed Jul 19 2017 Trip spans 7 days
Delta
Delta
BOS
12:00a
STL
6:34a
6h 34m
1 stop
STL
12:00a
BOS
6:53a
6h 53m
1 stop
Depart: Sat Oct 7 2017 Return: Sun Oct 8 2017 Trip spans 2 days
United
United
BOS
12:00a
STL
5:02a
5h 02m
1 stop
STL
12:00a
BOS
4:51a
4h 51m
1 stop
Depart: Thu Oct 5 2017 Return: Sat Oct 7 2017 Trip spans 3 days
American Airlines
American Airlines
BOS
12:00a
STL
4:41a
4h 41m
1 stop
STL
12:00a
BOS
6:31a
6h 31m
1 stop
Depart: Tue Jul 11 2017 Return: Tue Jul 18 2017 Trip spans 8 days
Multiple Airlines
Multiple Airlines
BOS
12:00a
STL
4:51a
4h 51m
1 stop
STL
12:00a
BOS
6:15a
6h 15m
1 stop
Depart: Fri Jul 14 2017 Return: Wed Jul 19 2017 Trip spans 6 days
Delta
Delta
BOS
12:00a
STL
6:17a
6h 17m
1 stop
STL
12:00a
BOS
8:04a
8h 04m
1 stop
Depart: Thu Nov 16 2017 Return: Tue Nov 28 2017 Trip spans 13 days
American Airlines
American Airlines
BOS
12:00a
STL
4:43a
4h 43m
1 stop
STL
12:00a
BOS
4:40a
4h 40m
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
3325 5:45 am 7:40 am Jul 1 - Aug 12
433 7:35 am 9:40 am Jul 17 - Aug 14
433 7:35 am 9:40 am Jun 28 - Jul 14
2738 8:10 am 10:15 am Jul 2 - Aug 13
2209 10:35 am 12:40 pm Jul 11 - Aug 14
2209 10:35 am 12:40 pm Jun 28 - Jul 10
5428 11:15 am 1:20 pm Jul 1 - Aug 12
4984 11:25 am 1:25 pm Jul 2 - Aug 13
3685 2:05 pm 4:05 pm Jun 28 - Jul 7
3685 2:05 pm 4:05 pm Jul 10 - Aug 14
5250 6:40 pm 8:55 pm Jul 2 - Aug 13
3230 6:45 pm 9:00 pm Jun 28 - Jul 7
3230 6:45 pm 9:00 pm Jul 10 - Aug 14
* 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
$327
Destination

St. Louis
$327