Find Deals on Flights from Islip Long Island to Lambert-St Louis (ISP - STL)

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
Students
under 26
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Islip Long Island to Lambert-St Louis

(Round-trip)
Depart: Thu Jan 12 2017 Return: Mon Jan 23 2017 Trip spans 12 days
American Airlines
American Airlines
ISP
1:10a
STL
6:21a
5h 11m
1 stop
STL
11:00a
ISP
3:58p
4h 58m
1 stop
Depart: Mon Mar 27 2017 Return: Wed Mar 29 2017 Trip spans 3 days
Southwest
Southwest
ISP
11:50a
STL
5:55p
6h 05m
1 stop
STL
4:20a
ISP
10:15a
5h 55m
1 stop
Depart: Sat Jan 14 2017 Return: Tue Jan 17 2017 Trip spans 4 days
American Airlines
American Airlines
ISP
1:10a
STL
6:21a
5h 11m
1 stop
STL
1:50a
ISP
6:25a
4h 35m
1 stop
Depart: Thu Jan 26 2017 Return: Sat Jan 28 2017 Trip spans 3 days
American Airlines
American Airlines
ISP
1:10a
STL
6:21a
5h 11m
1 stop
STL
1:50a
ISP
6:25a
4h 35m
1 stop
Depart: Sat Jan 28 2017 Return: Tue Jan 31 2017 Trip spans 4 days
American Airlines
American Airlines
ISP
1:10a
STL
6:21a
5h 11m
1 stop
STL
1:50a
ISP
6:25a
4h 35m
1 stop
Depart: Thu Mar 2 2017 Return: Mon Mar 6 2017 Trip spans 5 days
American Airlines
American Airlines
ISP
1:10a
STL
8:26a
7h 16m
1 stop
STL
9:07a
ISP
3:55p
6h 48m
1 stop
Depart: Tue Mar 21 2017 Return: Tue Mar 28 2017 Trip spans 8 days
American Airlines
American Airlines
ISP
2:10a
STL
9:13a
7h 03m
1 stop
STL
12:00p
ISP
4:55p
4h 55m
1 stop
Depart: Wed Dec 21 2016 Return: Mon Dec 26 2016 Trip spans 6 days
Southwest
Southwest
ISP
12:25a
STL
5:40a
5h 15m
1 stop
STL
12:55a
ISP
4:35a
3h 40m
1 stop
Depart: Fri Jan 6 2017 Return: Tue Jan 10 2017 Trip spans 5 days
American Airlines
American Airlines
ISP
6:50a
STL
11:39a
4h 49m
1 stop
STL
1:50a
ISP
6:25a
4h 35m
1 stop
Depart: Sat Jan 7 2017 Return: Tue Jan 10 2017 Trip spans 4 days
American Airlines
American Airlines
ISP
6:50a
STL
11:41a
4h 51m
1 stop
STL
1:50a
ISP
6:25a
4h 35m
1 stop
Depart: Fri Jan 20 2017 Return: Thu Jan 26 2017 Trip spans 7 days
American Airlines
American Airlines
ISP
1:10a
STL
8:26a
7h 16m
1 stop
STL
1:50a
ISP
6:25a
4h 35m
1 stop
Depart: Thu Feb 9 2017 Return: Sun Feb 12 2017 Trip spans 4 days
American Airlines
American Airlines
ISP
1:10a
STL
6:21a
5h 11m
1 stop
STL
11:00a
ISP
3:58p
4h 58m
1 stop
Depart: Wed Mar 1 2017 Return: Sun Mar 5 2017 Trip spans 5 days
Southwest
Southwest
ISP
3:45a
STL
9:05a
5h 20m
1 stop
STL
11:45a
ISP
5:15p
5h 30m
1 stop
Depart: Fri Jan 13 2017 Return: Mon Jan 16 2017 Trip spans 4 days
American Airlines
American Airlines
ISP
1:10a
STL
6:21a
5h 11m
1 stop
STL
6:30a
ISP
11:15a
4h 45m
1 stop
Depart: Fri Feb 10 2017 Return: Sun Feb 12 2017 Trip spans 3 days
American Airlines
American Airlines
ISP
1:10a
STL
6:21a
5h 11m
1 stop
STL
11:00a
ISP
3:58p
4h 58m
1 stop
Depart: Wed Jan 11 2017 Return: Sat Jan 14 2017 Trip spans 4 days
American Airlines
American Airlines
ISP
1:10a
STL
6:21a
5h 11m
1 stop
STL
1:50a
ISP
6:25a
4h 35m
1 stop
Depart: Sun Feb 19 2017 Return: Wed Feb 22 2017 Trip spans 4 days
American Airlines
American Airlines
ISP
1:10a
STL
8:26a
7h 16m
1 stop
STL
1:50a
ISP
6:30a
4h 40m
1 stop
Depart: Fri Dec 16 2016 Return: Mon Dec 19 2016 Trip spans 4 days
American Airlines
American Airlines
ISP
6:50a
STL
11:39a
4h 49m
1 stop
STL
11:20a
ISP
3:59p
4h 39m
1 stop
Depart: Sat Dec 17 2016 Return: Sun Dec 18 2016 Trip spans 2 days
American Airlines
American Airlines
ISP
6:50a
STL
11:41a
4h 51m
1 stop
STL
4:50a
ISP
8:53a
4h 03m
1 stop
Depart: Fri Apr 14 2017 Return: Sat Apr 22 2017 Trip spans 9 days
American Airlines
American Airlines
ISP
2:10a
STL
7:05a
4h 55m
1 stop
STL
12:00p
ISP
4:55p
4h 55m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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.

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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,
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Airports
Origin

Islip
$282
Destination

St. Louis
$282