Cheap flights from Dulles Intl (IAD) to Islip (ISP) from $259

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight to Islip departing on 4/23. 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.
IAD — ISP
Mar 5 — Mar 121

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Islip, New York?

To save up to 86% on this flight, we recommend booking at least 50 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Washington, D.C. Dulles Intl Airport to Islip, New York from $188 1-2 weeks out and tickets from $308 for flights departing within the next 72 hours.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Islip, New York?

February is one of the best times of the year to fly to Islip, New York from Washington, D.C. Dulles Intl Airport. Prices for February average $196 per person but you can even find prices for as low as $108. The most expensive prices can be found in the month of June. Opting for a February flight can save you 13% on your journey compared to booking in June

When is the cheapest time to fly from Washington, D.C. Dulles Intl Airport to Islip, New York (IAD - ISP)?

When flying from Washington, D.C. Dulles Intl Airport to Islip, New York, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap Dulles Intl to Islip flights in February & March 2024

Find cheap flight options from Dulles Intl to Islip specifically for the months of February and March 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,314,962 searches. Prices were last updated on February 29, 2024.
Sat 3/26:15 pmIAD - ISP
3 stops18h 02mMultiple Airlines
Mon 3/41:14 pmISP - IAD
3 stops22h 06mMultiple Airlines
Deal found 2/29$976

Dulles Intl to Islip 2024 flight deals

Discover exclusive flight deals for travel between Dulles Intl and Islip in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated February 29, 2024.
Sat 3/26:15 pmIAD - ISP
3 stops18h 02mMultiple Airlines
Mon 3/41:14 pmISP - IAD
3 stops22h 06mMultiple Airlines
Deal found 2/29$976

Dulles Intl to Islip flights leaving soon

Find last-minute flight options from Dulles Intl to Islip for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated February 29, 2024.
Sat 3/26:15 pmIAD - ISP
3 stops18h 02mMultiple Airlines
Mon 3/41:14 pmISP - IAD
3 stops22h 06mMultiple Airlines
Deal found 2/29$976

One-way flights to Islip from Dulles Intl

Search for one-way flight options from Dulles Intl to Islip. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated February 29, 2024.
Tue 4/231:00 pmIAD - ISP
3 stops43h 43mMultiple Airlines
Deal found 2/28$259

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Islip from Washington, D.C. Dulles Intl?

Located just 7.2 mi from the city center, Islip Long Island is the airport most travelers will use when flying to Islip from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Long Island (ISP) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 0 different airlines.

Are there last-minute flights available from Washington, D.C. Dulles Intl Airport to Islip, New York for under $1,000?

There are currently 1+ open flights from Washington, D.C. Dulles Intl Airport to Islip, New York within the next 7 days for less than $1,000.

What does IAD to ISP mean?

Great question - IAD to ISP just means Washington, D.C. Dulles Intl Airport to Islip Long Island Airport. Now you’ll know what these unique codes when you look for flights!

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How does Cheapflights help users find flights from Dulles Intl to Islip?

Deals for Dulles Intl to Islip flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Islip?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Dulles Intl to Islip.

Can Cheapflights find flights from Dulles Intl to Islip with no change fees?

Yes, we can. To see specific flights from Dulles Intl to Islip with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Dulles Intl to Islip become cheaper?

Yes! Start tracking prices for Dulles Intl to Islip flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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