ISP - WAS

$61 Find Cheap Flights from Islip to Washington, D.C.

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 Washington, D.C. departing on 2/27. 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.
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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
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Cheap Flight Deals from Long Island to Washington, D.C. (ISP-WAS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Long Island to Washington, D.C. 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.

Recent round-trip flight deals from Islip to Washington, D.C.

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Islip to Washington, D.C..
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
9:04 pm - 7:21 amISP-BWI
10h 17m1 stop
8:21 am - 8:04 pmBWI-ISP
11h 43m1 stop
$111Frontier
Find Deal
Mon, Feb 24 - Wed, Mar 5
8:47 am - 7:21 amISP-BWI
22h 34m1 stop
8:21 am - 8:41 amBWI-ISP
24h 20m1 stop
$120Frontier
Find Deal
Sat, Mar 1 - Tue, Mar 4
9:33 pm - 7:21 amISP-BWI
9h 48m1 stop
8:21 am - 8:04 pmBWI-ISP
11h 43m1 stop
$210Frontier
Find Deal
Tue, Mar 4 - Fri, Mar 7
9:04 pm - 7:21 amISP-BWI
10h 17m1 stop
8:21 am - 8:04 pmBWI-ISP
11h 43m1 stop
$211Frontier
Find Deal
Mon, Feb 24 - Thu, Mar 6
6:20 pm - 11:57 pmISP-BWI
29h 37m3 stops
5:41 pm - 1:40 pmBWI-ISP
19h 59m2 stops
Sat, Mar 1 - Tue, Mar 4
5:00 am - 11:10 amISP-DCA
6h 10m1 stop
1:15 pm - 9:50 pmDCA-ISP
8h 35m1 stop
$307Southwest
Find Deal
Fri, May 9 - Sun, May 11
3:50 pm - 5:20 pmISP-BWI
1h 30mnonstop
9:05 pm - 10:15 pmBWI-ISP
1h 10mnonstop
$319Southwest
Find Deal
Tue, Feb 25 - Tue, Mar 4
6:20 pm - 11:57 pmISP-BWI
29h 37m3 stops
8:39 pm - 1:40 pmBWI-ISP
17h 01m3 stops
Sat, Mar 1 - Tue, Mar 4
10:25 am - 4:51 pmISP-DCA
6h 26m1 stop
11:30 am - 7:40 pmDCA-ISP
8h 10m1 stop
$533JetBlue
Find Deal
Thu, Feb 20 - Wed, Feb 26
11:40 am - 6:59 pmISP-DCA
7h 19m1 stop
4:15 pm - 9:08 pmDCA-ISP
4h 53m1 stop
$627JetBlue
Find Deal
Tue, Apr 22 - Sun, May 4

Flights from Islip to Washington, D.C. - Travel Insights & Trends

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

What is the cheapest Islip to Washington, D.C. flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Islip to Washington, D.C..
Our data shows that the cheapest route for a return flight from Islip to Washington, D.C. cost $287 and was between Islip (ISP) and Baltimore (BWI). On average, the best prices are found if you fly this route. The average price for a return flight for this route is $287.

What’s the cheapest day of the week to fly from Islip to Washington, D.C.?

The average price of all round-trip flights from Islip to Washington, D.C. clicked on KAYAK for each day over the last 12 months.
For Islip to Washington, D.C., Tuesday is the cheapest day to fly on average and Monday is the most expensive. Flying from Washington, D.C. back to Islip, the best deals are generally found on Monday, with Thursday being the most expensive.

Good to know

Cheapest flight

$61
Flight from Islip to Baltimore

When to book flights from Islip to Washington, D.C.

Are your dates flexible? Find out the best times to travel from Islip to Washington, D.C. 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 flights from Islip to Washington, D.C.

  • What is the cheapest flight from Islip to Washington, D.C.?

    In the last 3 days, the lowest price for a flight from Islip to Washington, D.C. was $61 for a one-way ticket and $111 for a round-trip.

  • Do I need a passport to fly between Islip and Washington, D.C.?

    No, a passport isn't needed to fly from Islip to Washington, D.C.. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Islip to Washington, D.C.?

    When flying out of Islip you will be using Islip Long Island. You will be landing at one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

  • Which airlines offer Wi-Fi service onboard planes from Islip to Washington, D.C.?

    JetBlue, and Delta offer inflight Wi-Fi service on the Islip to Washington, D.C. flight route.

  • Which aircraft models fly most regularly from Islip to Washington, D.C.?

    The Airbus A320neo is the aircraft model that flies most regularly on the Islip to Washington, D.C. flight route.

  • On which days can I fly direct from Islip to Washington, D.C.?

    There are nonstop flights from Islip to Washington, D.C. on a daily basis.

  • How does KAYAK find such low prices on flights from Islip to Washington, D.C.?

    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 Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to Washington, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. 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 Washington, D.C.?

    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 Washington, D.C. with an airline and back to Islip with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to Washington, D.C.?

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

See more FAQs

KAYAK’s top tips for finding a cheap flight from Islip to Washington, D.C.

  • Looking for a cheap flight? 25% of our users found flights on this route for $213 or less one-way and $356 or less round-trip.

Top airline flying from Islip to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from Islip to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Islip to Washington, D.C.? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.1
SouthwestOverall score based on 4662 reviews
8.2Boarding
7.2Food
8.7Crew
8.1Comfort
7.7Entertainment
Airline reviews

Flight was awfully bumpy and landing was a bit jolting. I was in the restroom when snacks and drinks were served and was not asked if i wanted any. I had to ask for water finally.

10.0 ExcellentRachel, Jan 2025TPA - MDW
Read more Southwest reviews

Flight was awfully bumpy and landing was a bit jolting. I was in the restroom when snacks and drinks were served and was not asked if i wanted any. I had to ask for water finally.

Wi Fi was horrible kept cutting out the whole time and too expensive

I really like open seating. I hate that I've heard this is going away. This is one of the unique things that makes Southwest my goto choice.

Boarding was a little late, but made up for it. It was quick to taxi to the runway, since it's a smallish airport.

Excellent! Only question is how we check in at exactly 24 hours in advance and end up at the end of the B boarding group

Multiple delays and gate changes. Arrived at final destination 6 hours late. All rental cars had been taken.

Employees were kind and funny, as always! Flight was late but no announcements were made for people with tight connections to help them transition quickly. No service due to turbulence.

It was 2 hours 45 minutes late, for no apparently clear reason.

I recently flew Southwest from San Jose to Honolulu. I was very impressed with the flight crew, especially the flight attendant in charge of the front of the plane. She came through the aisle at least five times for drinks and water, and two times for snacks. I have not seen such service since I flew first class. Also, for the first time, they gave us the correct baggage claim number, and the luggage came out quickly. I can't wait for Southwest to have assigned seating! I absolutely hate the Cattle Call boarding procedure and the mad dash to get seats and overhead bins. However, the boarding was efficient.

Crew was great flight was great baggage claim was a failure. It took over 1 hour for bags to arrive. Poor communication poor effort when I spoke to the supervisor about the delay

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Clinton

Everything you need to know for your flight from Islip to Washington, D.C.

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