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>

$55 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

$137

Frontier

Fri 12/5Sun 12/7

IAD - ISP • 1 stop

Cheapest one-way

$55

Frontier

Sat 1/10

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

Fri, Dec 5 - Sun, Dec 7

9:26 am - 11:59 pmIAD-ISP

14h 33m1 stop

12:07 pm - 8:31 amISP-IAD

20h 24m1 stop

$137Frontier

Find Deal

Fri, Dec 5 - Sun, Dec 7

9:26 am - 11:59 pmIAD-ISP

14h 33m1 stop

12:07 pm - 8:31 amISP-IAD

20h 24m1 stop

$138Frontier

Find Deal

Fri, Dec 5 - Mon, Dec 8

9:26 am - 11:59 pmIAD-ISP

14h 33m1 stop

10:19 am - 11:05 pmISP-IAD

12h 46m2 stops

$175Multiple Airlines

Find Deal

Fri, Dec 5 - Sun, Dec 7

9:26 am - 11:59 pmIAD-ISP

14h 33m1 stop

2:19 pm - 8:31 amISP-IAD

18h 12m2 stops

$185Multiple Airlines

Find Deal

Sat, Dec 20 - Sun, Dec 21

9:48 am - 11:59 pmIAD-ISP

14h 11m1 stop

2:04 pm - 9:03 pmISP-IAD

6h 59m1 stop

$282Frontier

Find Deal

Sun, Dec 14 - Sun, Dec 21

9:20 pm - 9:13 amIAD-ISP

11h 53m1 stop

2:19 pm - 9:03 pmISP-IAD

30h 44m2 stops

$287Multiple Airlines

Find Deal

Thu, Dec 4 - Sun, Dec 7

7:18 pm - 11:59 pmIAD-ISP

28h 41m2 stops

12:00 pm - 7:55 pmISP-IAD

7h 55m1 stop

$293Multiple Airlines

Find Deal

Fri, Nov 28 - Sun, Nov 30

10:00 am - 6:01 pmDCA-ISP

8h 01m1 stop

10:50 am - 5:21 pmISP-DCA

6h 31m1 stop

$304JetBlue

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

Sat, Dec 20 - Sun, Dec 21

7:20 am - 2:40 pmDCA-ISP

7h 20m1 stop

2:45 pm - 10:50 pmISP-DCA

8h 05m2 stops

$392Southwest

Find Deal

Useful Info

Low season	January
High season	July
Cheapest flight	$55

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

$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