Find Cheap Flights from Washington Dulles Intl to Islip Long Island (IAD - ISP)

Search hundreds of travel sites at once for deals on flights to Islip Long Island

Sat 12/16
Sat 12/23
Any month
Compare vs. KAYAK |

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $149 or less.

FAQs for Booking Washington Dulles Intl to Islip Long Island Flights

How long does a flight from Washington Dulles Intl to Islip Long Island take?
An average nonstop flight takes 6h 29m, covering a distance of 264 miles.
Which airlines provide the cheapest flights from Washington Dulles Intl to Islip Long Island?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($209)
Do I need a passport to fly between Washington Dulles Intl and Islip Long Island?
No.

Book cheap flights from Washington Dulles Intl to Islip Long Island (round-trip)

Airports
Origin
Washington
$209
only
$209
Destination
Islip
$209
only
$209
Fri, Jan 5
IAD
ISP
22h 01m
Mon, Jan 8
ISP
IAD
16h 24m
Trip: 4 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MKE
TPA
Good 6.6

2nd row had plenty of leg room, nice new jet, Nice flight attendants, smooth flight, on time, made it to my destination safe. Successful flight! TSA Pre-chek was nice.

Idiot in front of me reclined his seat. Plane didn't get catered overnight. Water only.

MSY
PVD
Excellent 8.0

The price!

ATL
DEN
Mediocre 3.6

The price was good, and it was a non stop flight.

The crew was rude and the seats didn't recline.

TYS
MCO
Okay 5.0

Great people

The plane wasn’t very clean

MSY
MCO
Excellent 10.0

Great crew great flight

Nothing, everything was awesome. Crazy to believe this was a 19 dollar flight

Fri, May 25
IAD
ISP
6h 29m
Wed, Jun 6
ISP
IAD
6h 55m
Trip: 13 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ATL
DEN
Mediocre 3.6

The price was good, and it was a non stop flight.

The crew was rude and the seats didn't recline.

IAD
LAS
Good 6.3

They gave me and someone else the same seat luckily it wasn’t a packed flight and was able to move to a row that was empty

TYS
MCO
Okay 5.0

Great people

The plane wasn’t very clean

LAS
IAD
Good 6.3

The staff on the flight was awesome, very helpful and kind to my friend who is terrified to fly. We were even ahead of schedule.

To pay for a carry on item is just crazy to me... not to mention you have to pay for beverages and snacks. All you are given is water.

MSY
PVD
Excellent 8.0

The price!

Fri, Dec 22
IAD
ISP
6h 44m
Sun, Dec 24
ISP
IAD
16h 14m
Trip: 3 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SJU
ATL
Excellent 10.0

Fast luggage checking

No cash accepted for overweight baggage

LAS
IAD
Good 6.3

The staff on the flight was awesome, very helpful and kind to my friend who is terrified to fly. We were even ahead of schedule.

To pay for a carry on item is just crazy to me... not to mention you have to pay for beverages and snacks. All you are given is water.

MKE
TPA
Good 6.6

2nd row had plenty of leg room, nice new jet, Nice flight attendants, smooth flight, on time, made it to my destination safe. Successful flight! TSA Pre-chek was nice.

Idiot in front of me reclined his seat. Plane didn't get catered overnight. Water only.

MSY
PVD
Excellent 8.0

The price!

PHL
MCO
Mediocre 2.3

Its a scam! They act like they are giving you a break by having you buy cheap flights but in reality it costs more than a bit more expensive flight. I had to pay $45.00 each bag no matter if it was checked or carry-on. In total round trip I paid $180.00 extra just for my husbands carry-on as well as mine. Must add that our flights together cost 286.00. We should of went with American Airlines. On top of that we couldn't select our own seat if so, we had to pay extra, so we had to sit separated from each other. It was ridiculous! Never Again with this company!!!!!

*
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 and someone from our team will get back to you promptly.

^
The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.