Find Deals on Flights from Islip Long Island to Washington (ISP - WAS)

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.
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

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

Book cheap flights from Islip Long Island to Washington

(Round-trip)
Depart: Tue Mar 1 2016 Return: Sun Mar 6 2016 Trip spans 6 days
American Airlines
American Airlines
ISP
1:40p
DCA
6:43p
5h 03m
1 stop
DCA
3:34a
ISP
6:28a
2h 54m
1 stop
Depart: Mon Feb 22 2016 Return: Wed Mar 2 2016 Trip spans 10 days
American Airlines
American Airlines
ISP
1:40p
DCA
6:43p
5h 03m
1 stop
DCA
2:40a
ISP
6:28a
3h 48m
1 stop
Depart: Tue Feb 23 2016 Return: Wed Mar 2 2016 Trip spans 9 days
American Airlines
American Airlines
ISP
1:40p
DCA
6:43p
5h 03m
1 stop
DCA
2:40a
ISP
6:28a
3h 48m
1 stop
Depart: Sat Mar 5 2016 Return: Sun Mar 6 2016 Trip spans 2 days
American Airlines
American Airlines
ISP
6:53a
DCA
9:37a
2h 44m
1 stop
DCA
3:34a
ISP
6:28a
2h 54m
1 stop
Depart: Thu Feb 18 2016 Return: Wed Mar 2 2016 Trip spans 14 days
American Airlines
American Airlines
ISP
2:30a
DCA
7:51a
5h 21m
1 stop
DCA
2:40a
ISP
6:28a
3h 48m
1 stop
Depart: Fri Feb 19 2016 Return: Wed Mar 2 2016 Trip spans 13 days
American Airlines
American Airlines
ISP
2:30a
DCA
7:51a
5h 21m
1 stop
DCA
2:40a
ISP
6:28a
3h 48m
1 stop
Depart: Sun Feb 21 2016 Return: Wed Mar 2 2016 Trip spans 11 days
American Airlines
American Airlines
ISP
2:30a
DCA
5:49a
3h 19m
1 stop
DCA
1:22a
ISP
6:28a
5h 06m
1 stop
Depart: Mon Feb 29 2016 Return: Wed Mar 2 2016 Trip spans 3 days
American Airlines
American Airlines
ISP
1:40p
DCA
6:43p
5h 03m
1 stop
DCA
1:22a
ISP
6:28a
5h 06m
1 stop
Depart: Wed Mar 2 2016 Return: Sun Mar 6 2016 Trip spans 5 days
American Airlines
American Airlines
ISP
1:40p
DCA
6:43p
5h 03m
1 stop
DCA
1:00a
ISP
6:28a
5h 28m
1 stop
Depart: Fri Mar 4 2016 Return: Sun Mar 6 2016 Trip spans 3 days
American Airlines
American Airlines
ISP
1:39p
DCA
6:43p
5h 04m
1 stop
DCA
3:34a
ISP
6:28a
2h 54m
1 stop
Depart: Wed Feb 17 2016 Return: Wed Mar 2 2016 Trip spans 15 days
American Airlines
American Airlines
ISP
1:40p
DCA
6:43p
5h 03m
1 stop
DCA
2:40a
ISP
6:28a
3h 48m
1 stop
Depart: Sat Feb 20 2016 Return: Wed Mar 2 2016 Trip spans 12 days
American Airlines
American Airlines
ISP
4:25a
DCA
7:27a
3h 02m
1 stop
DCA
2:40a
ISP
6:28a
3h 48m
1 stop
Depart: Wed Feb 24 2016 Return: Wed Mar 2 2016 Trip spans 8 days
American Airlines
American Airlines
ISP
6:53a
DCA
11:38a
4h 45m
1 stop
DCA
12:52a
ISP
6:28a
5h 36m
1 stop
Depart: Thu Feb 25 2016 Return: Wed Mar 2 2016 Trip spans 7 days
American Airlines
American Airlines
ISP
2:30a
DCA
7:51a
5h 21m
1 stop
DCA
2:40a
ISP
6:28a
3h 48m
1 stop
Depart: Sat Feb 27 2016 Return: Wed Mar 2 2016 Trip spans 5 days
American Airlines
American Airlines
ISP
4:25a
DCA
9:37a
5h 12m
1 stop
DCA
2:40a
ISP
6:28a
3h 48m
1 stop
Depart: Thu Mar 3 2016 Return: Sun Mar 6 2016 Trip spans 4 days
American Airlines
American Airlines
ISP
6:53a
DCA
11:38a
4h 45m
1 stop
DCA
1:00a
ISP
6:28a
5h 28m
1 stop
Depart: Wed Mar 9 2016 Return: Sun Mar 13 2016 Trip spans 5 days
American Airlines
American Airlines
ISP
1:39p
DCA
6:43p
5h 04m
1 stop
DCA
1:00a
ISP
7:28a
5h 28m
1 stop
Depart: Sat Feb 13 2016 Return: Sun Feb 14 2016 Trip spans 2 days
American Airlines
American Airlines
ISP
4:25a
IAD
10:42a
6h 17m
2 stops
IAD
12:15a
ISP
6:28a
6h 13m
2 stops
Depart: Sat Mar 19 2016 Return: Tue Mar 22 2016 Trip spans 4 days
$1169
Select
Linear Air Taxi
Linear Air Taxi
ISP
4:00p
IAD
5:26p
1h 26m
nonstop
IAD
11:00a
ISP
12:26p
1h 26m
nonstop
Depart: Fri Mar 18 2016 Return: Sun Mar 20 2016 Trip spans 3 days
$8886
Select
Linear Air Taxi
Linear Air Taxi
ISP
7:00a
DCA
8:11a
1h 11m
nonstop
DCA
3:00p
ISP
4:11p
1h 11m
nonstop
Select an airline:  Southwest
Direct flights ISP to WAS on Southwest
Flight # Depart ISP Arrive BWI Sun Mon Tue Wed Thu Fri Sat Valid Between
4591 5:35 am 6:55 am Mar 14 - Mar 18
4591 5:35 am 6:55 am Mar 10 - Mar 11
5244 5:35 am 6:55 am Mar 13 - Apr 10
3144 5:50 am 7:10 am Jan 30 - Mar 5
1503 6:05 am 7:35 am Feb 14 - Mar 8
629 6:05 am 7:35 am Mar 9 - Mar 9
4441 6:15 am 7:30 am Mar 12 - Mar 12
869 7:35 am 8:50 am Mar 14 - Mar 21
869 7:35 am 8:50 am Mar 10 - Mar 11
1462 9:15 am 10:30 am Jan 30 - Mar 5
1639 12:15 pm 1:30 pm Jan 30 - Mar 5
1815 12:20 pm 1:30 pm Mar 13 - Apr 11
1815 12:20 pm 1:30 pm Mar 10 - Mar 11
3546 12:20 pm 1:40 pm Mar 9 - Mar 9
834 12:20 pm 1:40 pm Jan 31 - Mar 8
1987 12:35 pm 1:45 pm Mar 12 - Mar 12
4308 2:20 pm 3:30 pm Mar 10 - Mar 11
4308 2:20 pm 3:30 pm Mar 13 - Mar 25
5792 3:30 pm 4:40 pm Mar 9 - Mar 9
820 3:30 pm 4:40 pm Feb 8 - Mar 8
2915 4:50 pm 6:05 pm Feb 20 - Mar 5
1084 4:55 pm 6:10 pm Mar 12 - Mar 12
1580 5:40 pm 6:55 pm Mar 9 - Mar 9
449 5:40 pm 6:55 pm Feb 8 - Mar 8
2002 6:30 pm 7:40 pm Mar 10 - Mar 11
2002 6:30 pm 7:40 pm Mar 13 - Mar 27
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We make every attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller
At KAYAK we don’t set prices, so it’s not possible for us to guarantee what other companies are selling.

We aggregate tons of data for you
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 don'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.

More questions or if you have a bad price to report to us
Please send us an email and someone from our team will get back to you promptly.

Airports
Origin

Islip
$175
Destination

Washington
only $464
only $175