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.

$100 CHEAP FLIGHTS from District of Columbia to Islip

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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

Tue, Oct 6 - Sat, Oct 10

11:12 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

5h 46m1 stop Orlando

6:25 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

15h 52m1 stop Orlando

$210Frontier

Sat, Oct 3 - Sun, Oct 4

9:33 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

7h 25m1 stop Orlando

5:43 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

16h 34m1 stop Orlando

$240Frontier

Wed, Sep 23 - Thu, Sep 24

11:12 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

5h 46m1 stop Orlando

6:48 pm - 1:03 pmISP Islip Long Island-IAD Washington, D.C. Dulles Intl

18h 15m1 stop Tampa

$250Frontier

Wed, Sep 23 - Sun, Sep 27

11:12 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

5h 46m1 stop Orlando

6:48 pm - 1:03 pmISP Islip Long Island-IAD Washington, D.C. Dulles Intl

18h 15m1 stop Tampa

$250Frontier

Sat, Oct 3 - Mon, Oct 5

9:33 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

7h 25m1 stop Orlando

5:43 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

16h 34m1 stop Orlando

$259Frontier

Thu, Sep 24 - Sat, Sep 26

11:12 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

5h 46m1 stop Orlando

5:43 pm - 10:27 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

16h 44m1 stop Orlando

$260Frontier

Fri, Oct 2 - Mon, Oct 5

11:12 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

5h 46m1 stop Orlando

5:43 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

16h 34m1 stop Orlando

$269Frontier

Thu, Sep 24 - Sun, Sep 27

11:12 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

5h 46m1 stop Orlando

6:48 pm - 1:03 pmISP Islip Long Island-IAD Washington, D.C. Dulles Intl

18h 15m1 stop Tampa

$270Frontier

Thu, Oct 1 - Sun, Oct 4

11:12 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

5h 46m1 stop Orlando

5:43 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

16h 34m1 stop Orlando

$310Frontier

Fri, Dec 11 - Mon, Dec 14

4:55 pm - 10:45 pmDCA Washington, D.C. Reagan-National-ISP Islip Long Island

5h 50m1 stop Orlando

5:05 pm - 10:55 pmISP Islip Long Island-DCA Washington, D.C. Reagan-National

5h 50m1 stop Orlando

$357Southwest

Recent last minute flight deals from District of Columbia to Islip

Thu, Sep 17 - Sun, Sep 20

11:12 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

5h 46m1 stop Orlando

6:48 pm - 12:53 pmISP Islip Long Island-IAD Washington, D.C. Dulles Intl

18h 05m1 stop Tampa

$293Frontier

Sat, Sep 12 - Sat, Sep 26

11:12 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

5h 46m1 stop Orlando

5:43 pm - 10:27 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

16h 44m1 stop Orlando

$294Frontier

Wed, Sep 16 - Fri, Sep 18

11:12 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

5h 46m1 stop Orlando

6:48 pm - 6:33 pmISP Islip Long Island-IAD Washington, D.C. Dulles Intl

23h 45m1 stop Tampa

$314Frontier

Mon, Sep 14 - Tue, Sep 15

11:12 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

5h 46m1 stop Orlando

5:43 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

16h 34m1 stop Orlando

$320Frontier

Sat, Sep 12 - Sun, Sep 13

11:12 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

5h 46m1 stop Orlando

5:43 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

16h 34m1 stop Orlando

$325Frontier

Sat, Sep 12 - Mon, Sep 14

7:28 pm - 6:03 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

22h 35m1 stop Tampa

5:43 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

16h 34m1 stop Orlando

$330Frontier

Mon, Sep 14 - Tue, Sep 15

11:12 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

5h 46m1 stop Orlando

5:43 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

16h 34m1 stop Orlando

$336Frontier

Sun, Sep 13 - Mon, Sep 14

11:12 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

5h 46m1 stop Orlando

5:43 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

16h 34m1 stop Orlando

$355Frontier

Mon, Sep 14 - Tue, Sep 15

11:12 am - 4:58 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

5h 46m1 stop Orlando

5:43 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

16h 34m1 stop Orlando

$377Frontier

Wed, Sep 16 - Sun, Sep 20

6:00 am - 2:55 pmDCA Washington, D.C. Reagan-National-ISP Islip Long Island

8h 55m1 stop Orlando

10:30 am - 6:50 pmISP Islip Long Island-DCA Washington, D.C. Reagan-National

8h 20m1 stop Tampa

$661Southwest

Useful Info

Low season	January
High season	July
Cheapest flight	$100

Best time to beat the crowds with an average 22% drop in price.

Most popular time to fly with an average 13% 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.