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: Wed Apr 12 2017 Return: Mon Apr 17 2017 Trip spans 6 days
American Airlines
American Airlines
ISP
1:55p
DCA
6:17p
4h 22m
1 stop
DCA
1:55p
ISP
6:01p
4h 06m
1 stop
Depart: Tue May 2 2017 Return: Thu May 4 2017 Trip spans 3 days
American Airlines
American Airlines
ISP
1:55p
DCA
6:17p
4h 22m
1 stop
DCA
2:30a
ISP
8:35a
6h 05m
1 stop
Depart: Wed Apr 5 2017 Return: Tue Apr 11 2017 Trip spans 7 days
American Airlines
American Airlines
ISP
1:55p
DCA
6:17p
4h 22m
1 stop
DCA
11:45a
ISP
6:01p
6h 16m
1 stop
Depart: Fri Mar 31 2017 Return: Mon Apr 3 2017 Trip spans 4 days
American Airlines
American Airlines
ISP
1:55p
DCA
6:18p
4h 23m
1 stop
DCA
2:00p
ISP
5:58p
3h 58m
1 stop
Depart: Tue Apr 4 2017 Return: Tue Apr 11 2017 Trip spans 8 days
American Airlines
American Airlines
ISP
1:55p
DCA
6:17p
4h 22m
1 stop
DCA
11:45a
ISP
6:01p
6h 16m
1 stop
Depart: Thu Apr 6 2017 Return: Tue Apr 11 2017 Trip spans 6 days
American Airlines
American Airlines
ISP
1:55p
DCA
6:17p
4h 22m
1 stop
DCA
11:45a
ISP
6:01p
6h 16m
1 stop
Depart: Thu Apr 13 2017 Return: Mon Apr 17 2017 Trip spans 5 days
American Airlines
American Airlines
ISP
9:10a
DCA
12:47p
3h 37m
1 stop
DCA
1:55p
ISP
6:01p
4h 06m
1 stop
Depart: Sat Apr 15 2017 Return: Mon Apr 17 2017 Trip spans 3 days
American Airlines
American Airlines
ISP
9:10a
DCA
12:46p
3h 36m
1 stop
DCA
1:55p
ISP
6:01p
4h 06m
1 stop
Depart: Sun Apr 16 2017 Return: Mon Apr 17 2017 Trip spans 2 days
American Airlines
American Airlines
ISP
1:55p
DCA
6:17p
4h 22m
1 stop
DCA
1:55p
ISP
6:01p
4h 06m
1 stop
Depart: Fri Apr 7 2017 Return: Tue Apr 11 2017 Trip spans 5 days
American Airlines
American Airlines
ISP
1:55p
DCA
6:17p
4h 22m
1 stop
DCA
11:45a
ISP
6:01p
6h 16m
1 stop
Depart: Sat Apr 8 2017 Return: Tue Apr 11 2017 Trip spans 4 days
American Airlines
American Airlines
ISP
9:10a
DCA
12:46p
3h 36m
1 stop
DCA
1:55p
ISP
6:01p
4h 06m
1 stop
Depart: Mon Apr 10 2017 Return: Tue Apr 11 2017 Trip spans 2 days
American Airlines
American Airlines
ISP
1:55p
DCA
6:17p
4h 22m
1 stop
DCA
11:45a
ISP
6:01p
6h 16m
1 stop
Depart: Sat Apr 1 2017 Return: Mon Apr 3 2017 Trip spans 3 days
American Airlines
American Airlines
ISP
9:10a
DCA
12:44p
3h 34m
1 stop
DCA
2:00p
ISP
5:58p
3h 58m
1 stop
Depart: Sun Apr 9 2017 Return: Tue Apr 11 2017 Trip spans 3 days
American Airlines
American Airlines
ISP
1:55p
DCA
6:17p
4h 22m
1 stop
DCA
11:45a
ISP
6:01p
6h 16m
1 stop
Depart: Sat Apr 22 2017 Return: Mon Apr 24 2017 Trip spans 3 days
American Airlines
American Airlines
ISP
9:10a
DCA
12:46p
3h 36m
1 stop
DCA
1:55p
ISP
6:01p
4h 06m
1 stop
Depart: Fri May 5 2017 Return: Mon May 8 2017 Trip spans 4 days
American Airlines
American Airlines
ISP
1:55p
DCA
6:25p
4h 30m
1 stop
DCA
1:45p
ISP
6:02p
4h 17m
1 stop
Depart: Wed Apr 26 2017 Return: Fri Apr 28 2017 Trip spans 3 days
American Airlines
American Airlines
ISP
9:10a
DCA
12:47p
3h 37m
1 stop
DCA
2:30a
ISP
8:35a
6h 05m
1 stop
Depart: Tue Apr 11 2017 Return: Wed Apr 12 2017 Trip spans 2 days
American Airlines
American Airlines
ISP
9:10a
DCA
12:47p
3h 37m
1 stop
DCA
1:55p
ISP
6:01p
4h 06m
1 stop
Depart: Wed May 10 2017 Return: Fri May 12 2017 Trip spans 3 days
American Airlines
American Airlines
ISP
1:55p
DCA
6:17p
4h 22m
1 stop
DCA
1:45p
ISP
6:02p
4h 17m
1 stop
Depart: Fri Apr 28 2017 Return: Sun Apr 30 2017 Trip spans 3 days
American Airlines
American Airlines
ISP
1:55p
DCA
6:17p
4h 22m
1 stop
DCA
1:55p
ISP
6:01p
4h 06m
1 stop
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
457 5:50 am 7:05 am Mar 29 - Apr 24
5054 6:05 am 7:20 am Apr 29 - Jun 3
362 6:15 am 7:30 am Apr 25 - Apr 25
362 6:15 am 7:30 am Apr 26 - May 8
2552 6:25 am 7:35 am Apr 2 - Apr 23
1091 6:30 am 7:40 am Apr 1 - Apr 22
2497 6:35 am 7:45 am Apr 30 - May 21
1828 7:05 am 8:20 am Mar 29 - Apr 24
3773 8:10 am 9:20 am Apr 29 - Jun 3
2895 8:25 am 9:35 am Apr 9 - Apr 23
4897 11:15 am 12:25 pm Apr 26 - May 26
730 11:15 am 12:25 pm Apr 25 - Apr 25
496 11:50 am 1:00 pm Mar 29 - Apr 24
6443 11:50 am 1:00 pm Apr 2 - Apr 23
2981 12:05 pm 1:15 pm Apr 30 - May 21
2869 12:25 pm 1:35 pm Apr 29 - Apr 29
2869 12:25 pm 1:35 pm May 6 - May 6
964 12:40 pm 1:50 pm Apr 1 - Apr 22
3249 1:05 pm 2:20 pm Apr 25 - May 26
3841 2:25 pm 3:35 pm Apr 30 - May 21
548 3:50 pm 5:00 pm Mar 29 - Apr 21
548 3:50 pm 5:00 pm Apr 24 - Apr 24
504 4:05 pm 5:20 pm Apr 25 - Apr 28
504 4:05 pm 5:20 pm May 1 - May 8
5565 5:00 pm 6:15 pm Apr 1 - Apr 22
2844 5:05 pm 6:20 pm Apr 29 - May 27
669 5:40 pm 6:55 pm Apr 25 - Jun 2
1160 5:55 pm 7:10 pm Mar 29 - Apr 24
3080 6:00 pm 7:15 pm Apr 30 - May 21
3452 6:10 pm 7:20 pm Apr 2 - Apr 23
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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

Here's why:

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

We compile tonnes 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 can'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.

If you have 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
$210
Destination

Washington
$210