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: Sat Oct 14 2017 Return: Mon Oct 16 2017 Trip spans 3 days
Frontier
Frontier
ISP
12:00a
SJU
5:29p
17h 29m
1 stop
SJU
12:00a
ISP
5:10p
17h 10m
1 stop
Depart: Fri Oct 6 2017 Return: Sat Oct 7 2017 Trip spans 2 days
Multiple Airlines
Multiple Airlines
ISP
12:00a
SJU
6:43a
6h 43m
1 stop
SJU
12:00a
ISP
9:00a
9h 00m
1 stop
Depart: Wed Nov 8 2017 Return: Mon Nov 13 2017 Trip spans 6 days
Frontier
Frontier
ISP
12:00a
SJU
5:11p
17h 11m
1 stop
SJU
12:00a
ISP
9:05a
9h 05m
1 stop
Depart: Tue Feb 13 2018 Return: Tue Feb 20 2018 Trip spans 8 days
Frontier
Frontier
ISP
12:00a
SJU
4:59p
16h 59m
1 stop
SJU
12:00a
ISP
8:33a
8h 33m
1 stop
Depart: Mon Sep 25 2017 Return: Tue Oct 10 2017 Trip spans 16 days
American Airlines
American Airlines
ISP
12:00a
SJU
5:47a
5h 47m
1 stop
SJU
12:00a
ISP
6:10a
6h 10m
1 stop
Depart: Wed Oct 11 2017 Return: Fri Oct 13 2017 Trip spans 3 days
Frontier
Frontier
ISP
12:00a
SJU
5:29p
17h 29m
1 stop
SJU
12:00a
ISP
5:10p
17h 10m
1 stop
Depart: Tue Nov 7 2017 Return: Mon Nov 13 2017 Trip spans 7 days
Frontier
Frontier
ISP
12:00a
SJU
5:11p
17h 11m
1 stop
SJU
12:00a
ISP
9:05a
9h 05m
1 stop
Depart: Tue Jan 30 2018 Return: Tue Feb 6 2018 Trip spans 8 days
Frontier
Frontier
ISP
12:00a
SJU
4:59p
16h 59m
1 stop
SJU
12:00a
ISP
8:53a
8h 53m
1 stop
Depart: Mon Nov 20 2017 Return: Fri Nov 24 2017 Trip spans 5 days
Multiple Airlines
Multiple Airlines
ISP
12:00a
SJU
8:25a
8h 25m
1 stop
SJU
12:00a
ISP
9:05a
9h 05m
1 stop
Depart: Wed Dec 6 2017 Return: Tue Dec 12 2017 Trip spans 7 days
Frontier
Frontier
ISP
12:00a
SJU
5:11p
17h 11m
1 stop
SJU
12:00a
ISP
8:53a
8h 53m
1 stop
Depart: Wed Oct 25 2017 Return: Sat Oct 28 2017 Trip spans 4 days
Frontier
Frontier
ISP
12:00a
SJU
5:29p
17h 29m
1 stop
SJU
12:00a
ISP
9:00a
9h 00m
1 stop
Depart: Sat Dec 9 2017 Return: Mon Dec 11 2017 Trip spans 3 days
Frontier
Frontier
ISP
12:00a
SJU
5:11p
17h 11m
1 stop
SJU
12:00a
ISP
5:26p
17h 26m
1 stop
Depart: Mon Sep 25 2017 Return: Wed Sep 27 2017 Trip spans 3 days
Multiple Airlines
Multiple Airlines
ISP
12:00a
SJU
5:47a
5h 47m
1 stop
SJU
12:00a
ISP
7:30a
7h 30m
1 stop
Depart: Thu Feb 1 2018 Return: Tue Feb 6 2018 Trip spans 6 days
Frontier
Frontier
ISP
12:00a
SJU
4:59p
16h 59m
1 stop
SJU
12:00a
ISP
8:53a
8h 53m
1 stop
Depart: Wed Dec 6 2017 Return: Sat Dec 9 2017 Trip spans 4 days
Frontier
Frontier
ISP
12:00a
SJU
5:11p
17h 11m
1 stop
SJU
12:00a
ISP
5:26p
17h 26m
1 stop
Depart: Tue Jan 16 2018 Return: Mon Jan 29 2018 Trip spans 14 days
Frontier
Frontier
ISP
12:00a
SJU
4:59p
16h 59m
1 stop
SJU
12:00a
ISP
5:26p
17h 26m
1 stop
Depart: Sun Feb 4 2018 Return: Tue Feb 27 2018 Trip spans 24 days
Frontier
Frontier
ISP
12:00a
SJU
4:59p
16h 59m
1 stop
SJU
12:00a
ISP
8:33a
8h 33m
1 stop
Depart: Thu Mar 1 2018 Return: Tue Mar 13 2018 Trip spans 12 days
Frontier
Frontier
ISP
12:00a
SJU
5:07p
17h 07m
1 stop
SJU
12:00a
ISP
8:33a
8h 33m
1 stop
Depart: Fri Oct 20 2017 Return: Sat Oct 21 2017 Trip spans 2 days
Frontier
Frontier
ISP
12:00a
SJU
5:29p
17h 29m
1 stop
SJU
12:00a
ISP
9:00a
9h 00m
1 stop
Depart: Thu Nov 2 2017 Return: Sun Nov 5 2017 Trip spans 4 days
Frontier
Frontier
ISP
12:00a
SJU
5:11p
17h 11m
1 stop
SJU
12:00a
ISP
8:10a
9h 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.

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Airports
Origin

Islip
$277
Destination

San Juan
$277