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ISP - DCA

$246 Find Cheap Flights from Islip to Reagan Washington National Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to Reagan-National departing on 12/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags

Search hundreds of travel sites at once for deals on flights to Reagan Washington National Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Washington, D.C., as well as popular online travel agencies
In the last 7 days travelers have searched 46,646,933 times on KAYAK, and here is why:

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Cheap Flight Deals from Islip to Reagan Washington National Airport (ISP-DCA)

 
These are the cheapest deals for flights from Islip to Reagan-National currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Islip to Reagan-National

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Islip to Reagan-National.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
12:10 pm - 11:00 pmISP-DCA
10h 50m1 stop
10:40 am - 7:30 pmDCA-ISP
8h 50m1 stop
$481Southwest
Find Deal
Wed, Dec 4 - Sat, Dec 7
10:45 am - 8:15 pmISP-DCA
9h 30m1 stop
6:00 am - 12:51 pmDCA-ISP
6h 51m1 stop
$487JetBlue
Find Deal
Wed, Dec 4 - Sat, Dec 7
7:35 am - 5:25 pmISP-DCA
9h 50m1 stop
6:55 am - 3:45 pmDCA-ISP
8h 50m1 stop
$616Southwest
Find Deal
Sat, Dec 7 - Tue, Dec 10

Flights from Islip to Reagan-National - Travel Insights & Trends

Get data-powered insights and trends into flights from Islip to Reagan-National to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Islip to Washington, D.C. Reagan-National Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Islip to Washington, D.C. Reagan-National Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Islip to Washington, D.C. Reagan-National Airport is August, where tickets cost $208 on average. On the other hand, the most expensive months are November and October, where the average cost of tickets is $318 and $277 respectively.

How far in advance should I book a flight from Islip to Washington, D.C. Reagan-National Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Islip to Washington, D.C. Reagan-National Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Islip to Washington, D.C. Reagan-National Airport, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 107 days before departure.

Good to know

Cheapest flight

$246
Flight from Islip to Reagan Washington National Airport

When to book flights from Islip to Reagan-National

Are your dates flexible? Find out the best times to travel from Islip to Reagan-National based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Islip to Reagan Washington National Airport flights

  • What is the cheapest flight from Islip to Washington, D.C. Reagan-National Airport?

    In the last 3 days, the lowest price for a flight from Islip to Washington, D.C. Reagan-National Airport was $246 for a one-way ticket and $481 for a round-trip.

  • Do I need a passport to fly between Islip and Reagan Washington National Airport?

    No

  • Which aircraft models fly most regularly from Islip to Reagan Washington National Airport?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Islip to Reagan Washington National Airport?

    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 Islip to Reagan Washington National Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to Reagan Washington National Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reagan Washington National Airport from Islip 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 Islip to Reagan Washington National Airport?

    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 Reagan Washington National Airport with an airline and back to Islip with another airline. Booking your flights between Islip and DCA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to Reagan Washington National Airport?

    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 Reagan Washington National Airport from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Book cheap flights from Islip to Washington, D.C.

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Islip to Washington, D.C. found on KAYAK in the last 72 hours.
12/12Thu
1 stopJetBlue
6h 15mISP-DCA
$246
12/9Mon
1 stopJetBlue
6h 15mISP-DCA
$336
11/29Fri
1 stopJetBlue
5h 58mISP-DCA
$481
12/25Wed
1 stopJetBlue
10h 35mISP-DCA
$497
12/8Sun
1 stopJetBlue
9h 31mISP-DCA
$522
12/1Sun
1 stopJetBlue
5h 58mISP-DCA
$641

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Last minute flights from Islip to Reagan-National

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Islip to Washington, D.C. that are departing in the next 10 days.
11/24Sun
multi-stopSouthwest
7h 20mISP-DCA
11/26Tue
multi-stopSouthwest
9h 10mDCA-ISP
$656

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Everything you need to know for your flight from Islip to Reagan-National

Information on your arrival and departure airports

Reagan-National (DCA)
Islip (ISP)

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