Browse Origins:
Browse Destinations:

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: Tue May 5 2015 Return: Wed May 6 2015 Trip spans 2 days
US Airways
US Airways
ISP
10:52a
IAD
7:29p
8h 37m
2 stops
IAD
1:20a
ISP
7:31a
6h 11m
2 stops
Depart: Mon May 11 2015 Return: Tue May 19 2015 Trip spans 9 days
US Airways
US Airways
ISP
10:47a
IAD
6:34a
19h 47m
2 stops
IAD
7:04a
ISP
5:24p
10h 20m
2 stops
Depart: Thu May 7 2015 Return: Tue May 19 2015 Trip spans 13 days
American Airlines
American Airlines
ISP
3:30a
IAD
1:20p
9h 50m
2 stops
IAD
1:20a
ISP
7:23a
6h 03m
2 stops
Depart: Tue Jun 30 2015 Return: Wed Jul 8 2015 Trip spans 9 days
US Airways
US Airways
ISP
2:42p
IAD
9:04a
18h 22m
2 stops
IAD
1:20a
ISP
9:28a
8h 08m
2 stops
Depart: Sun May 3 2015 Return: Tue May 5 2015 Trip spans 3 days
American Airlines
American Airlines
ISP
10:52a
IAD
7:29p
8h 37m
2 stops
IAD
1:20a
ISP
7:31a
6h 11m
2 stops
Depart: Fri May 8 2015 Return: Sun May 17 2015 Trip spans 10 days
US Airways
US Airways
ISP
10:47a
IAD
7:29p
8h 42m
2 stops
IAD
3:59p
ISP
10:20a
18h 21m
2 stops
Depart: Wed Apr 8 2015 Return: Sun Apr 12 2015 Trip spans 5 days
American Airlines
American Airlines
ISP
10:52a
IAD
5:09p
6h 17m
2 stops
IAD
1:20a
ISP
7:31a
6h 11m
2 stops
Depart: Tue Apr 7 2015 Return: Thu Apr 9 2015 Trip spans 3 days
American Airlines
American Airlines
ISP
3:40a
IAD
1:24p
9h 44m
2 stops
IAD
1:20a
ISP
7:31a
6h 11m
2 stops
Depart: Wed Apr 29 2015 Return: Sun May 3 2015 Trip spans 5 days
$1777
Select
Linear Air Taxi
Linear Air Taxi
ISP
5:00p
IAD
6:51p
1h 51m
nonstop
IAD
5:00p
ISP
6:51p
1h 51m
nonstop
Depart: Thu Apr 30 2015 Return: Sun May 3 2015 Trip spans 4 days
$1777
Select
Linear Air Taxi
Linear Air Taxi
ISP
10:00a
IAD
11:51a
1h 51m
nonstop
IAD
11:00a
ISP
12:51p
1h 51m
nonstop
Depart: Fri May 1 2015 Return: Sun May 3 2015 Trip spans 3 days
$1777
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
Depart: Sat May 2 2015 Return: Sun May 3 2015 Trip spans 2 days
$1777
Select
Linear Air Taxi
Linear Air Taxi
ISP
9:00a
IAD
10:51a
1h 51m
nonstop
IAD
5:00p
ISP
6:51p
1h 51m
nonstop
Depart: Fri Apr 3 2015 Return: Sun Apr 5 2015 Trip spans 3 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
4:00p
IAD
5:51p
1h 51m
nonstop
IAD
2:00a
ISP
3:51a
1h 51m
nonstop
Depart: Thu Apr 16 2015 Return: Sun Apr 19 2015 Trip spans 4 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
2:00a
IAD
3:51a
1h 51m
nonstop
IAD
2:00a
ISP
3:51a
1h 51m
nonstop
Depart: Fri Apr 17 2015 Return: Sun Apr 19 2015 Trip spans 3 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
6:00a
IAD
7:51a
1h 51m
nonstop
IAD
2:00a
ISP
3:51a
1h 51m
nonstop
Depart: Fri Apr 24 2015 Return: Sun Apr 26 2015 Trip spans 3 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
10:00a
IAD
11:51a
1h 51m
nonstop
IAD
10:00a
ISP
11:51a
1h 51m
nonstop
Depart: Thu Jun 25 2015 Return: Mon Jul 13 2015 Trip spans 19 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
4:00a
IAD
5:51a
1h 51m
nonstop
IAD
10:00a
ISP
11:51a
1h 51m
nonstop
Depart: Sun Jun 28 2015 Return: Mon Jun 29 2015 Trip spans 2 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
12:00p
IAD
1:51p
1h 51m
nonstop
IAD
6:00a
ISP
7:51a
1h 51m
nonstop
Depart: Thu Jul 2 2015 Return: Sun Jul 5 2015 Trip spans 4 days
$5329
Select
Linear Air Taxi
Linear Air Taxi
ISP
2:00a
IAD
3:51a
1h 51m
nonstop
IAD
4:00p
ISP
5:51p
1h 51m
nonstop
Airports
Origin

Islip
$372
Destination

Washington
$372