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

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Islip Long Island to Washington Dulles Intl

(Round-trip)
Depart: Fri Jun 5 2015 Return: Sun Jun 7 2015 Trip spans 3 days
American Airlines
American Airlines
ISP
10:47a
IAD
5:23p
6h 36m
2 stops
IAD
1:25a
ISP
7:27a
6h 02m
2 stops
Depart: Sat Jun 6 2015 Return: Sun Jun 7 2015 Trip spans 2 days
American Airlines
American Airlines
ISP
5:30a
IAD
11:46a
6h 16m
2 stops
IAD
1:25a
ISP
7:27a
6h 02m
2 stops
Depart: Tue Jun 2 2015 Return: Tue Jun 9 2015 Trip spans 8 days
American Airlines
American Airlines
ISP
3:30a
IAD
11:47a
8h 17m
2 stops
IAD
1:25a
ISP
7:27a
6h 02m
2 stops
Depart: Wed Jun 3 2015 Return: Wed Jun 10 2015 Trip spans 8 days
American Airlines
American Airlines
ISP
7:48a
IAD
3:12p
7h 24m
2 stops
IAD
1:25a
ISP
7:27a
6h 02m
2 stops
Depart: Mon Jun 1 2015 Return: Wed Jun 3 2015 Trip spans 3 days
US Airways
US Airways
ISP
10:47a
IAD
5:09p
6h 22m
2 stops
IAD
1:20a
ISP
7:23a
6h 03m
2 stops
Depart: Thu Jun 4 2015 Return: Tue Jun 9 2015 Trip spans 6 days
American Airlines
American Airlines
ISP
3:35a
IAD
11:46a
8h 11m
2 stops
IAD
1:25a
ISP
7:27a
6h 02m
2 stops
Depart: Thu Jun 11 2015 Return: Sun Jun 14 2015 Trip spans 4 days
American Airlines
American Airlines
ISP
7:52a
IAD
3:08p
7h 16m
2 stops
IAD
1:25a
ISP
7:27a
6h 02m
2 stops
Depart: Fri Aug 14 2015 Return: Mon Aug 17 2015 Trip spans 4 days
$1797
Select
Linear Air Taxi
Linear Air Taxi
ISP
7:00a
IAD
8:55a
1h 55m
nonstop
IAD
6:00a
ISP
7:55a
1h 55m
nonstop
Airports
Origin

Islip
$531
Destination

Washington
$531