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Find Flight Deals 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: Thu Feb 5 2015 Return: Fri Feb 6 2015 Trip spans 2 days
US Airways
US Airways
ISP
6:40a
IAD
12:25p
5h 45m
2 stops
IAD
12:20a
ISP
9:27a
9h 07m
2 stops
Depart: Sun Feb 8 2015 Return: Wed Feb 11 2015 Trip spans 4 days
US Airways
US Airways
ISP
6:40a
IAD
12:25p
5h 45m
2 stops
IAD
12:20a
ISP
6:19a
5h 59m
2 stops
Depart: Mon Mar 30 2015 Return: Tue Apr 7 2015 Trip spans 9 days
American Airlines
American Airlines
ISP
7:56a
IAD
3:17p
7h 21m
2 stops
IAD
1:20a
ISP
7:31a
6h 11m
2 stops
Depart: Fri Apr 10 2015 Return: Tue Apr 14 2015 Trip spans 5 days
American Airlines
American Airlines
ISP
3:40a
IAD
11:55a
8h 15m
2 stops
IAD
1:20a
ISP
7:31a
6h 11m
2 stops
Depart: Thu Feb 19 2015 Return: Fri Feb 20 2015 Trip spans 2 days
American Airlines
American Airlines
ISP
6:40a
IAD
12:25p
5h 45m
2 stops
IAD
12:20a
ISP
6:20a
6h 00m
2 stops
Depart: Fri Feb 6 2015 Return: Sun Feb 8 2015 Trip spans 3 days
US Airways
US Airways
ISP
6:40a
IAD
2:13p
7h 33m
2 stops
IAD
2:00a
ISP
9:27a
7h 27m
2 stops
Depart: Fri Mar 27 2015 Return: Sun Mar 29 2015 Trip spans 3 days
American Airlines
American Airlines
ISP
10:47a
IAD
5:07p
6h 20m
2 stops
IAD
1:20a
ISP
7:31a
6h 11m
2 stops
Depart: Fri Apr 24 2015 Return: Sun Apr 26 2015 Trip spans 3 days
$2665
Select
Linear Air Taxi
Linear Air Taxi
ISP
11:00a
IAD
12:51p
1h 51m
nonstop
IAD
4:00p
ISP
5:51p
1h 51m
nonstop
Depart: Thu Jan 29 2015 Return: Sun Feb 1 2015 Trip spans 4 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
6:00a
IAD
7:51a
1h 51m
nonstop
IAD
3:00p
ISP
4:51p
1h 51m
nonstop
Depart: Fri Jan 30 2015 Return: Sun Feb 1 2015 Trip spans 3 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
3:00p
IAD
4:51p
1h 51m
nonstop
IAD
6:00a
ISP
7:51a
1h 51m
nonstop
Depart: Sat Jan 31 2015 Return: Sun Feb 1 2015 Trip spans 2 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
12:00p
IAD
1:51p
1h 51m
nonstop
IAD
1:00p
ISP
2:51p
1h 51m
nonstop
Depart: Mon Feb 2 2015 Return: Tue Feb 3 2015 Trip spans 2 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
1:00p
IAD
2:51p
1h 51m
nonstop
IAD
2:00a
ISP
3:51a
1h 51m
nonstop
Depart: Tue Feb 10 2015 Return: Thu Feb 12 2015 Trip spans 3 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
3:00p
IAD
4:51p
1h 51m
nonstop
IAD
9:00a
ISP
10:51a
1h 51m
nonstop
Depart: Fri Feb 13 2015 Return: Mon Feb 16 2015 Trip spans 4 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
7:00a
IAD
8:51a
1h 51m
nonstop
IAD
2:00a
ISP
3:51a
1h 51m
nonstop
Depart: Sun Feb 15 2015 Return: Tue Feb 17 2015 Trip spans 3 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
4:00a
IAD
5:51a
1h 51m
nonstop
IAD
3:00p
ISP
4:51p
1h 51m
nonstop
Depart: Mon Apr 6 2015 Return: Fri Apr 10 2015 Trip spans 5 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
5:00a
IAD
6:51a
1h 51m
nonstop
IAD
4:00p
ISP
5:51p
1h 51m
nonstop
Depart: Wed Apr 22 2015 Return: Fri Apr 24 2015 Trip spans 3 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
3:00a
IAD
4:51a
1h 51m
nonstop
IAD
7:00a
ISP
8:51a
1h 51m
nonstop
Change your search
Airports
Origin

Islip
$266
Destination

Washington
$266