Find Cheap Flights from Islip Long Island to Puerto Rico

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.
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Book cheap flights from Islip Long Island to Puerto Rico

(Round-trip)
Depart: Mon Sep 18 2017 Return: Mon Oct 2 2017 Trip spans 15 days
American Airlines
American Airlines
ISP
2:10a
SJU
8:05a
5h 55m
1 stop
SJU
9:10a
ISP
5:55p
8h 45m
1 stop
Depart: Wed Oct 11 2017 Return: Sun Oct 15 2017 Trip spans 5 days
Southwest
Southwest
ISP
8:45a
SJU
5:40p
8h 55m
1 stop
SJU
3:15a
ISP
10:55a
7h 40m
1 stop
Depart: Sat Oct 14 2017 Return: Sun Oct 22 2017 Trip spans 9 days
Southwest
Southwest
ISP
6:30a
SJU
12:40p
6h 10m
1 stop
SJU
3:15a
ISP
10:55a
7h 40m
1 stop
Depart: Thu Nov 30 2017 Return: Mon Dec 11 2017 Trip spans 12 days
American Airlines
American Airlines
ISP
1:10a
SJU
7:00a
5h 50m
1 stop
SJU
9:10a
ISP
5:55p
8h 45m
1 stop
Depart: Tue Aug 22 2017 Return: Mon Aug 28 2017 Trip spans 7 days
Southwest
Southwest
ISP
4:00a
SJU
10:35a
6h 35m
1 stop
SJU
10:05a
ISP
7:10p
9h 05m
2 stops
Depart: Fri Sep 22 2017 Return: Mon Sep 25 2017 Trip spans 4 days
Southwest
Southwest
ISP
4:00a
SJU
10:35a
6h 35m
1 stop
SJU
11:25a
ISP
7:50p
8h 25m
1 stop
Depart: Sun Jun 11 2017 Return: Wed Jun 14 2017 Trip spans 4 days
American Airlines
American Airlines
ISP
2:09a
SJU
8:13a
6h 04m
1 stop
SJU
11:30a
ISP
6:05p
6h 35m
1 stop
Depart: Mon Jun 12 2017 Return: Tue Jun 20 2017 Trip spans 9 days
American Airlines
American Airlines
ISP
2:09a
SJU
10:36a
8h 27m
1 stop
SJU
9:15a
ISP
6:05p
8h 50m
1 stop
Depart: Sun Jul 16 2017 Return: Wed Jul 19 2017 Trip spans 4 days
Southwest
Southwest
ISP
9:05a
SJU
6:00p
8h 55m
1 stop
SJU
9:55a
ISP
5:20p
7h 25m
1 stop
Depart: Sun Jun 4 2017 Return: Tue Jun 13 2017 Trip spans 10 days
American Airlines
American Airlines
ISP
2:09a
SJU
8:13a
6h 04m
1 stop
SJU
9:15a
ISP
6:05p
8h 50m
1 stop
Depart: Mon Jun 5 2017 Return: Tue Jun 13 2017 Trip spans 9 days
American Airlines
American Airlines
ISP
2:09a
SJU
8:13a
6h 04m
1 stop
SJU
9:15a
ISP
6:05p
8h 50m
1 stop
Depart: Tue Jul 18 2017 Return: Fri Jul 21 2017 Trip spans 4 days
Southwest
Southwest
ISP
1:30a
SJU
8:00a
6h 30m
1 stop
SJU
9:55a
ISP
8:25p
10h 30m
2 stops
Depart: Tue Jun 6 2017 Return: Tue Jun 13 2017 Trip spans 8 days
American Airlines
American Airlines
ISP
2:09a
SJU
10:36a
8h 27m
1 stop
SJU
9:15a
ISP
6:05p
8h 50m
1 stop
Depart: Thu Jul 13 2017 Return: Sun Jul 16 2017 Trip spans 4 days
Southwest
Southwest
ISP
1:30a
SJU
8:00a
6h 30m
1 stop
SJU
9:50a
ISP
5:20p
7h 30m
1 stop
Depart: Thu Jun 8 2017 Return: Tue Jun 13 2017 Trip spans 6 days
American Airlines
American Airlines
ISP
2:09a
SJU
10:36a
8h 27m
1 stop
SJU
9:15a
ISP
6:05p
8h 50m
1 stop
Depart: Fri Jun 2 2017 Return: Sun Jun 11 2017 Trip spans 10 days
Southwest
Southwest
ISP
8:00a
SJU
4:45p
8h 45m
1 stop
SJU
9:50a
ISP
5:20p
7h 30m
1 stop
Depart: Thu Sep 7 2017 Return: Mon Sep 11 2017 Trip spans 5 days
American Airlines
American Airlines
ISP
9:10a
SJU
5:25p
8h 15m
1 stop
SJU
9:10a
ISP
5:55p
8h 45m
1 stop
Depart: Fri Sep 15 2017 Return: Mon Sep 18 2017 Trip spans 4 days
American Airlines
American Airlines
ISP
2:20p
SJU
8:59a
18h 39m
2 stops
SJU
9:10a
ISP
5:55p
8h 45m
1 stop
Depart: Mon May 29 2017 Return: Mon Jun 5 2017 Trip spans 8 days
American Airlines
American Airlines
ISP
2:10a
SJU
8:09a
5h 59m
1 stop
SJU
11:30a
ISP
6:05p
6h 35m
1 stop
Depart: Tue May 30 2017 Return: Sat Jun 3 2017 Trip spans 5 days
Southwest
Southwest
ISP
1:45a
SJU
7:50a
6h 05m
1 stop
SJU
11:20a
ISP
6:30p
7h 10m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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
$437
Destination

San Juan
$437