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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: Tue Aug 4 2015 Return: Wed Aug 12 2015 Trip spans 9 days
US Airways
US Airways
ISP
2:50p
IAD
4:47a
13h 57m
2 stops
IAD
9:45a
ISP
5:25p
7h 40m
2 stops
Depart: Fri Aug 7 2015 Return: Sun Aug 9 2015 Trip spans 3 days
US Airways
US Airways
ISP
10:47a
IAD
6:44p
7h 57m
2 stops
IAD
1:20a
ISP
7:27a
6h 07m
2 stops
Depart: Mon Jul 20 2015 Return: Thu Jul 23 2015 Trip spans 4 days
American Airlines
American Airlines
ISP
2:50p
IAD
4:47a
13h 57m
2 stops
IAD
1:20a
ISP
10:22a
9h 02m
2 stops
Depart: Fri Jul 10 2015 Return: Sun Jul 12 2015 Trip spans 3 days
American Airlines
American Airlines
ISP
3:35a
IAD
1:16p
9h 41m
2 stops
IAD
1:20a
ISP
7:27a
6h 07m
2 stops
Depart: Tue Jul 7 2015 Return: Fri Jul 10 2015 Trip spans 4 days
American Airlines
American Airlines
ISP
3:35a
IAD
11:46a
8h 11m
2 stops
IAD
7:05a
ISP
2:25p
7h 20m
2 stops
Depart: Fri Jul 17 2015 Return: Wed Jul 22 2015 Trip spans 6 days
American Airlines
American Airlines
ISP
7:52a
IAD
3:08p
7h 16m
2 stops
IAD
7:05a
ISP
2:25p
7h 20m
2 stops
Depart: Wed Jul 15 2015 Return: Wed Jul 22 2015 Trip spans 8 days
$3794
Select
Linear Air Taxi
Linear Air Taxi
ISP
7:00a
IAD
8:55a
1h 55m
nonstop
IAD
2:00a
ISP
3:55a
1h 55m
nonstop
Depart: Thu Jul 16 2015 Return: Wed Jul 22 2015 Trip spans 7 days
$3794
Select
Linear Air Taxi
Linear Air Taxi
ISP
5:00p
IAD
6:55p
1h 55m
nonstop
IAD
3:00p
ISP
4:55p
1h 55m
nonstop
Depart: Sun Aug 30 2015 Return: Thu Sep 3 2015 Trip spans 5 days
$3794
Select
Linear Air Taxi
Linear Air Taxi
ISP
9:00a
IAD
10:55a
1h 55m
nonstop
IAD
4:00a
ISP
5:55a
1h 55m
nonstop
Depart: Tue Sep 1 2015 Return: Mon Sep 7 2015 Trip spans 7 days
$3794
Select
Linear Air Taxi
Linear Air Taxi
ISP
5:00a
IAD
6:55a
1h 55m
nonstop
IAD
8:00a
ISP
9:55a
1h 55m
nonstop
Depart: Sat Sep 19 2015 Return: Sun Sep 20 2015 Trip spans 2 days
$3794
Select
Linear Air Taxi
Linear Air Taxi
ISP
4:00a
IAD
5:55a
1h 55m
nonstop
IAD
3:00p
ISP
4:55p
1h 55m
nonstop
Depart: Fri Jul 24 2015 Return: Sun Jul 26 2015 Trip spans 3 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
2:00a
IAD
3:51a
1h 51m
nonstop
IAD
4:00a
ISP
5:51a
1h 51m
nonstop
Airports
Origin

Islip
$512
Destination

Washington
$512