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>

$122 CHEAP FLIGHTS from District of Columbia to Islip

ISP

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

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Cheapest round-trip

$188

Frontier

Sun 12/14Sun 12/21

IAD - ISP • 1 stop

Cheapest one-way

$122

Frontier

Fri 12/12

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

Sun, Dec 14 - Sun, Dec 21

9:20 pm - 9:13 amIAD-ISP

11h 53m1 stop

6:15 am - 3:53 pmISP-IAD

9h 38m1 stop

$188Frontier

Find Deal

Sat, Dec 6 - Wed, Dec 10

9:20 pm - 10:20 amIAD-ISP

13h 00m1 stop

6:00 am - 9:43 amISP-IAD

27h 43m2 stops

$261Frontier

Find Deal

Sat, Dec 6 - Wed, Dec 10

9:20 pm - 10:20 amIAD-ISP

13h 00m1 stop

6:00 am - 9:43 amISP-IAD

27h 43m2 stops

$273Frontier

Find Deal

Fri, Dec 12 - Sun, Dec 14

9:20 pm - 9:13 amIAD-ISP

11h 53m1 stop

11:15 am - 8:24 pmISP-IAD

9h 09m1 stop

$282Frontier

Find Deal

Sat, Dec 6 - Wed, Dec 10

9:20 pm - 10:20 amIAD-ISP

13h 00m1 stop

12:37 pm - 8:26 amISP-IAD

19h 49m1 stop

$317Frontier

Find Deal

Mon, Mar 9 - Sun, Mar 15

9:21 am - 11:59 pmIAD-ISP

14h 38m1 stop

11:55 am - 9:13 pmISP-IAD

33h 18m2 stops

$319Multiple Airlines

Find Deal

Sat, Dec 6 - Wed, Dec 10

9:20 pm - 10:20 amIAD-ISP

13h 00m1 stop

6:00 am - 11:10 pmISP-IAD

41h 10m2 stops

$321Multiple Airlines

Find Deal

Fri, Jan 16 - Sun, Jan 18

7:30 am - 1:30 pmDCA-ISP

6h 00m1 stop

9:15 am - 3:45 pmISP-DCA

6h 30m1 stop

$378Southwest

Find Deal

Mon, Feb 16 - Tue, Feb 17

7:30 am - 4:45 pmDCA-ISP

9h 15m1 stop

6:20 am - 4:00 pmISP-DCA

9h 40m1 stop

$383Southwest

Find Deal

Fri, Dec 19 - Sun, Dec 21

12:05 pm - 6:45 pmDCA-ISP

6h 40m1 stop

10:46 am - 5:20 pmISP-DCA

6h 34m1 stop

$446JetBlue

Find Deal

Useful Info

Low season	January
High season	July
Cheapest flight	$122

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

$122 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