How does KAYAK find such low prices on flights from District of Columbia to Islip?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to Islip. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to Islip?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from District of Columbia to Islip?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Islip with an airline and back to District of Columbia with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to Islip?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Islip from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$68 CHEAP FLIGHTS from District of Columbia to Islip

ISP

KAYAK searches hundreds of travel sites at once for deals on flights to Islip

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$197

Frontier

Mon 1/12Fri 1/16

IAD - ISP • 1 stop

Cheapest one-way

$68

Frontier

Fri 1/30

IAD - ISP • 1 stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Islip!

Flight Deals

Cheap Flights from District of Columbia to Islip

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from District of Columbia to Islip that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from District of Columbia to Islip

Mon, Jan 12 - Fri, Jan 16

8:35 am - 7:51 pm

IAD

ISP

11h 16m1 stop

8:54 pm - 8:38 am

ISP

IAD

11h 44m1 stop

$197Frontier

Tue, Jan 13 - Sat, Jan 17

6:00 am - 10:46 pm

IAD

ISP

16h 46m2 stops

8:00 am - 8:04 am

ISP

IAD

24h 04m1 stop

$235Frontier

Fri, Jan 9 - Sun, Jan 11

2:53 pm - 11:10 am

IAD

ISP

20h 17m2 stops

8:40 pm - 7:40 am

ISP

IAD

11h 00m1 stop

$262Multiple Airlines

Thu, Feb 5 - Fri, Feb 6

7:30 am - 1:30 pm

DCA

ISP

6h 00m1 stop

5:00 pm - 10:55 pm

ISP

DCA

5h 55m1 stop

$327Southwest

Fri, Mar 13 - Wed, Mar 25

2:39 pm - 9:48 am

IAD

ISP

19h 09m1 stop

11:50 am - 7:24 am

ISP

IAD

19h 34m2 stops

$329Multiple Airlines

Thu, Feb 5 - Fri, Feb 6

7:30 am - 1:30 pm

DCA

ISP

6h 00m1 stop

2:10 pm - 10:55 pm

ISP

DCA

8h 45m2 stops

$332Southwest

Thu, Jan 8 - Sat, Jan 10

6:37 pm - 1:21 pm

IAD

ISP

18h 44m2 stops

7:56 pm - 7:40 am

ISP

IAD

11h 44m1 stop

$339Multiple Airlines

Mon, Jan 12 - Fri, Jan 16

9:50 am - 7:51 pm

DCA

ISP

10h 01m1 stop

8:54 pm - 2:59 pm

ISP

DCA

18h 05m1 stop

$362Multiple Airlines

Thu, Jun 18 - Mon, Jun 22

5:25 pm - 11:40 pm

DCA

ISP

6h 15m1 stop

5:20 am - 12:00 pm

ISP

DCA

6h 40m1 stop

$457Southwest

Sun, Apr 5 - Mon, Apr 6

9:19 am - 7:11 pm

IAD

ISP

9h 52m1 stop

9:41 am - 9:13 pm

ISP

IAD

11h 32m1 stop

$781Frontier

Useful Info

Low season	January
High season	July
Cheapest flight	$68

Best time to beat the crowds with an average 15% drop in price.

Most popular time to fly with an average 5% increase in price.

Flight from Washington Dulles Airport to Islip

How does KAYAK find such low prices on flights from District of Columbia to Islip?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to Islip.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to Islip?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from District of Columbia to Islip?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Islip with an airline and back to District of Columbia with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to Islip?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Islip from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Riverhead

Amagansett

Everything you need to know for your flight to Islip

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Islip

Islip (ISP)

ISP

$68 Find Cheap Flights from District of Columbia to Islip

KAYAK searches hundreds of travel sites at once for deals on flights to Islip

Everything you should know

Cheap Flights from District of Columbia to Islip

Recent round-trip flight deals from District of Columbia to Islip

Recent one-way flight deals from District of Columbia to Islip

Recent last minute flight deals from District of Columbia to Islip

Good to know

FAQs for booking flights from District of Columbia to Islip

How does KAYAK find such low prices on flights from District of Columbia to Islip?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to Islip.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to Islip?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from District of Columbia to Islip?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Islip with an airline and back to District of Columbia with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to Islip?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Islip from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Islip?

Everything you need to know for your flight to Islip

Information on the airport you'll fly into in Islip

Cabin class types available on flights to District of Columbia

Complete your trip to Islip with a hotel stay or car rental

Find direct flights for Islip

Flights to other popular destinations

Flights from domestic origins to Islip

Choose which airport to fly into in Islip

Find deals for your return flight