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>

$121 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 23% 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.

Flight Deals

Cheap Flights from District of Columbia to Islip

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

Fri, May 29 - Sun, May 31

5:28 pm - 9:08 am

IAD

ISP

15h 40m

1 stop

10:03 am - 4:33 pm

ISP

IAD

6h 30m

1 stop

$267Frontier

Sat, Apr 4 - Sat, Apr 11

3:57 pm - 11:57 pm

IAD

ISP

8h 00m

1 stop

5:45 am - 3:10 pm

ISP

IAD

9h 25m

1 stop

$270Frontier

Sat, Apr 4 - Sat, Apr 11

1:33 pm - 11:13 am

IAD

ISP

21h 40m

1 stop

5:02 pm - 10:16 am

ISP

IAD

17h 14m

2 stops

$292Frontier

Fri, May 29 - Sun, May 31

4:25 pm - 10:30 pm

DCA

ISP

6h 05m

1 stop

1:50 pm - 10:50 pm

ISP

DCA

9h 00m

1 stop

$327Southwest

Thu, May 14 - Sun, May 17

8:09 am - 7:13 pm

IAD

ISP

11h 04m

2 stops

4:07 pm - 7:27 am

ISP

IAD

15h 20m

1 stop

$329Multiple Airlines

Tue, Apr 7 - Wed, Apr 8

6:05 am - 4:35 pm

DCA

ISP

10h 30m

1 stop

6:55 am - 3:45 pm

ISP

DCA

8h 50m

1 stop

$332Southwest

Tue, Apr 7 - Wed, Apr 8

6:05 am - 4:35 pm

DCA

ISP

10h 30m

1 stop

2:30 pm - 10:25 pm

ISP

DCA

7h 55m

2 stops

$338Southwest

Fri, May 8 - Sun, May 10

6:00 am - 12:05 pm

DCA

ISP

6h 05m

1 stop

5:15 am - 12:00 pm

ISP

DCA

6h 45m

1 stop

$347Southwest

Tue, Apr 7 - Wed, Apr 8

6:00 am - 4:58 pm

IAD

ISP

10h 58m

2 stops

5:28 pm - 11:33 am

ISP

IAD

18h 05m

1 stop

$380Multiple Airlines

Thu, Jul 23 - Mon, Jul 27

6:00 am - 11:35 am

DCA

ISP

5h 35m

1 stop

12:25 pm - 7:30 pm

ISP

DCA

7h 05m

1 stop

$399JetBlue

Useful Info

Low season	January
High season	July
Cheapest flight	$121

Best time to beat the crowds with an average 20% 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

$121 Find Cheap Flights from District of Columbia to Islip

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

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