Find Cheap Flights from Islip Long Island to San Juan

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 San Juan

(Round-trip)
Depart: Sat Sep 2 2017 Return: Tue Sep 12 2017 Trip spans 11 days
Frontier
Frontier
ISP
6:45a
SJU
8:40p
13h 55m
1 stop
SJU
10:25p
ISP
5:55a
7h 30m
1 stop
Depart: Tue Feb 13 2018 Return: Wed Feb 21 2018 Trip spans 9 days
American Airlines
American Airlines
ISP
8:10a
SJU
4:25p
8h 15m
1 stop
SJU
9:10a
ISP
5:55p
8h 45m
1 stop
Depart: Tue Sep 5 2017 Return: Mon Sep 11 2017 Trip spans 7 days
Frontier
Frontier
ISP
6:45a
SJU
8:40p
13h 55m
1 stop
SJU
10:25p
ISP
5:55a
7h 30m
1 stop
Depart: Wed Sep 6 2017 Return: Mon Sep 11 2017 Trip spans 6 days
Frontier
Frontier
ISP
6:45a
SJU
8:40p
13h 55m
1 stop
SJU
10:25p
ISP
5:55a
7h 30m
1 stop
Depart: Sat Sep 9 2017 Return: Mon Sep 11 2017 Trip spans 3 days
Frontier
Frontier
ISP
6:45a
SJU
8:39p
13h 54m
1 stop
SJU
10:25p
ISP
5:55a
7h 30m
1 stop
Depart: Tue Sep 26 2017 Return: Mon Oct 2 2017 Trip spans 7 days
Frontier
Frontier
ISP
6:45a
SJU
8:39p
13h 54m
1 stop
SJU
10:25p
ISP
5:55a
7h 30m
1 stop
Depart: Wed Sep 27 2017 Return: Mon Oct 2 2017 Trip spans 6 days
Frontier
Frontier
ISP
6:45a
SJU
8:39p
13h 54m
1 stop
SJU
10:25p
ISP
5:55a
7h 30m
1 stop
Depart: Wed Feb 21 2018 Return: Wed Feb 28 2018 Trip spans 8 days
American Airlines
American Airlines
ISP
1:10a
SJU
7:00a
5h 50m
1 stop
SJU
11:20a
ISP
5:55p
6h 35m
1 stop
Depart: Sat Sep 30 2017 Return: Mon Oct 2 2017 Trip spans 3 days
Frontier
Frontier
ISP
6:45a
SJU
8:39p
13h 54m
1 stop
SJU
10:25p
ISP
5:55a
7h 30m
1 stop
Depart: Tue Oct 3 2017 Return: Mon Oct 9 2017 Trip spans 7 days
Frontier
Frontier
ISP
6:45a
SJU
8:39p
13h 54m
1 stop
SJU
10:15p
ISP
3:25p
17h 10m
1 stop
Depart: Thu Sep 21 2017 Return: Thu Oct 5 2017 Trip spans 15 days
American Airlines
American Airlines
ISP
9:10a
SJU
5:49p
8h 39m
1 stop
SJU
9:15a
ISP
5:56p
8h 41m
1 stop
Depart: Tue Sep 12 2017 Return: Mon Sep 18 2017 Trip spans 7 days
Frontier
Frontier
ISP
6:45a
SJU
8:39p
13h 54m
1 stop
SJU
10:25p
ISP
5:55a
7h 30m
1 stop
Depart: Sat Nov 4 2017 Return: Tue Nov 14 2017 Trip spans 11 days
American Airlines
American Airlines
ISP
9:10a
SJU
5:43p
8h 33m
1 stop
SJU
4:20a
ISP
12:44p
8h 24m
1 stop
Depart: Wed Sep 13 2017 Return: Mon Sep 18 2017 Trip spans 6 days
Frontier
Frontier
ISP
6:45a
SJU
8:39p
13h 54m
1 stop
SJU
10:25p
ISP
5:55a
7h 30m
1 stop
Depart: Sat Sep 23 2017 Return: Tue Sep 26 2017 Trip spans 4 days
Frontier
Frontier
ISP
6:45a
SJU
8:39p
13h 54m
1 stop
SJU
10:25p
ISP
5:55a
7h 30m
1 stop
Depart: Fri Jan 12 2018 Return: Wed Jan 17 2018 Trip spans 6 days
American Airlines
American Airlines
ISP
1:10a
SJU
7:00a
5h 50m
1 stop
SJU
11:20a
ISP
5:55p
6h 35m
1 stop
Depart: Wed Oct 4 2017 Return: Mon Oct 9 2017 Trip spans 6 days
Frontier
Frontier
ISP
6:45a
SJU
7:29p
12h 44m
1 stop
SJU
10:15p
ISP
3:25p
17h 10m
1 stop
Depart: Thu Sep 7 2017 Return: Mon Sep 11 2017 Trip spans 5 days
Frontier
Frontier
ISP
6:45a
SJU
8:39p
13h 54m
1 stop
SJU
10:25p
ISP
5:55a
7h 30m
1 stop
Depart: Thu Oct 5 2017 Return: Sun Oct 8 2017 Trip spans 4 days
American Airlines
American Airlines
ISP
9:10a
SJU
5:43p
8h 33m
1 stop
SJU
9:15a
ISP
5:56p
8h 41m
1 stop
Depart: Fri Sep 8 2017 Return: Mon Sep 11 2017 Trip spans 4 days
Frontier
Frontier
ISP
6:45a
SJU
8:39p
13h 54m
1 stop
SJU
10:25p
ISP
5:55a
7h 30m
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
$277
Destination

San Juan
$277