Find Deals on Flights from Washington Dulles Intl to Islip Long Island (IAD - ISP)

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 Washington Dulles Intl to Islip Long Island

(Round-trip)
Depart: Mon May 1 2017 Return: Sat May 6 2017 Trip spans 6 days
American Airlines
American Airlines
IAD
9:49a
ISP
6:01p
8h 12m
3 stops
ISP
4:30a
IAD
1:18p
8h 48m
2 stops
Depart: Thu Jun 15 2017 Return: Mon Jun 19 2017 Trip spans 5 days
American Airlines
American Airlines
IAD
6:51a
ISP
1:23p
6h 32m
2 stops
ISP
1:55p
IAD
7:43p
5h 48m
2 stops
Depart: Fri May 12 2017 Return: Sun May 14 2017 Trip spans 3 days
American Airlines
American Airlines
IAD
9:50a
ISP
6:02p
8h 12m
2 stops
ISP
4:30a
IAD
11:36a
7h 06m
2 stops
Depart: Thu Apr 13 2017 Return: Mon Apr 17 2017 Trip spans 5 days
American Airlines
American Airlines
IAD
1:05a
ISP
8:35a
7h 30m
2 stops
ISP
1:55p
IAD
4:48a
14h 53m
2 stops
Depart: Fri Jun 2 2017 Return: Sun Jun 4 2017 Trip spans 3 days
American Airlines
American Airlines
IAD
6:51a
ISP
1:23p
6h 32m
2 stops
ISP
2:09a
IAD
9:11a
7h 02m
2 stops
Depart: Fri Sep 1 2017 Return: Sun Sep 10 2017 Trip spans 10 days
American Airlines
American Airlines
IAD
7:00a
ISP
1:52p
6h 52m
2 stops
ISP
2:10a
IAD
9:01a
6h 51m
2 stops
Depart: Fri May 5 2017 Return: Mon May 8 2017 Trip spans 4 days
American Airlines
American Airlines
IAD
6:51a
ISP
1:20p
6h 29m
2 stops
ISP
1:55p
IAD
7:45p
5h 50m
2 stops
Depart: Wed Jul 12 2017 Return: Sun Jul 16 2017 Trip spans 5 days
American Airlines
American Airlines
IAD
7:00a
ISP
1:52p
6h 52m
2 stops
ISP
2:10a
IAD
9:01a
6h 51m
2 stops
Depart: Thu Jun 22 2017 Return: Sun Jun 25 2017 Trip spans 4 days
American Airlines
American Airlines
IAD
6:51a
ISP
1:23p
6h 32m
2 stops
ISP
1:55p
IAD
7:43p
5h 48m
2 stops
Depart: Sat Apr 1 2017 Return: Sat Apr 8 2017 Trip spans 8 days
American Airlines
American Airlines
IAD
9:44a
ISP
5:58p
8h 14m
2 stops
ISP
9:10a
IAD
5:42p
8h 32m
3 stops
Depart: Wed Apr 5 2017 Return: Thu Apr 6 2017 Trip spans 2 days
American Airlines
American Airlines
IAD
9:49a
ISP
6:01p
8h 12m
3 stops
ISP
9:10a
IAD
5:42p
8h 32m
3 stops
Depart: Fri May 26 2017 Return: Mon May 29 2017 Trip spans 4 days
American Airlines
American Airlines
IAD
6:51a
ISP
1:20p
6h 29m
2 stops
ISP
2:10a
IAD
9:02a
6h 52m
2 stops
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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

Washington
$490
Destination

Islip
$490