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>

$52 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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41,299,237 searches in the past 7 days on KAYAK

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Cheapest round-trip

$190

Frontier

Mon 11/24Sat 12/6

IAD - ISP • 1 stop

Cheapest one-way

$55

Frontier

Thu 1/15

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, Nov 24 - Sat, Dec 6

2:11 pm - 11:59 pmIAD-ISP

9h 48m1 stop

10:19 am - 8:24 pmISP-IAD

10h 05m1 stop

$190Frontier

Find Deal

Tue, Nov 25 - Sat, Dec 6

8:44 am - 8:14 pmIAD-ISP

11h 30m1 stop

10:19 am - 8:24 pmISP-IAD

10h 05m1 stop

$210Frontier

Find Deal

Thu, Nov 20 - Mon, Nov 24

11:12 am - 10:37 amIAD-ISP

23h 25m1 stop

6:00 am - 1:16 pmISP-IAD

7h 16m1 stop

$213Frontier

Find Deal

Fri, Nov 21 - Sat, Dec 6

5:26 pm - 11:59 pmIAD-ISP

6h 33m1 stop

10:19 am - 8:24 pmISP-IAD

10h 05m1 stop

$320Frontier

Find Deal

Thu, Nov 20 - Mon, Nov 24

5:40 pm - 10:37 amIAD-ISP

16h 57m2 stops

6:00 am - 1:16 pmISP-IAD

7h 16m1 stop

$325Multiple Airlines

Find Deal

Thu, Nov 20 - Mon, Nov 24

10:45 am - 6:01 pmDCA-ISP

7h 16m1 stop

7:59 pm - 9:14 amISP-DCA

13h 15m1 stop

$328JetBlue

Find Deal

Wed, Nov 19 - Fri, Nov 21

8:45 am - 9:45 amDCA-ISP

25h 00m1 stop

6:56 pm - 4:49 pmISP-DCA

21h 53m1 stop

$410JetBlue

Find Deal

Thu, Nov 27 - Sat, Nov 29

6:55 am - 2:30 pmDCA-ISP

7h 35m1 stop

6:00 am - 3:20 pmISP-DCA

9h 20m1 stop

$438Southwest

Find Deal

Fri, Nov 21 - Sat, Nov 29

11:55 am - 10:35 pmDCA-ISP

10h 40m1 stop

11:00 am - 8:00 pmISP-DCA

9h 00m1 stop

$463Southwest

Find Deal

Fri, Nov 21 - Thu, Dec 4

5:26 pm - 11:59 pmIAD-ISP

6h 33m1 stop

12:00 pm - 7:55 pmISP-IAD

7h 55m1 stop

$580Multiple Airlines

Find Deal

Useful Info

Low season	January
High season	July
Cheapest flight	$52

Best time to beat the crowds with an average 12% 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

$55 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