What is the cheapest month to book a flight from Islip, New York to New Windsor?

Currently, October is the cheapest month in which you can book a flight from Islip, New York to New Windsor (average of $109). Flying from Islip, New York to New Windsor in August is currently the most expensive (average of $226). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ISP to SWF?

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

Most accurate provider : When it comes to deals on Islip, New York-New Windsor flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Islip, New York-New Windsor flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Islip, New York-New Windsor flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Islip, New York-New Windsor flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-New Windsor flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Islip to Stewart that include hotel bookings?

Yes. In addition to deals on Islip to Stewart flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Islip to Stewart?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Stewart.

Can I find deals for business class flights from Islip to Stewart?

Yes. Cheapflights offers flight deals from Islip to Stewart by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$478+ Save on Flights from Islip, NY to New Windsor

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Cheap flight deals from Islip to Stewart

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars

Provider with most accurate pricing for Islip Long Island-New Windsor Stewart flight deals.

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Provider most trusted by Cheapflights users for Islip Long Island-New Windsor Stewart flights.

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Find flight deals from Islip to Stewart

One-way flights from Islip to Stewart
Search for one-way flight options from Islip to Stewart. Find affordable one-way fares based on user searches. Data last updated March 25, 2025.

Wed 4/92:35 pmISP - SWF

3 stops28h 39mMultiple Airlines

Deal found 3/24

$478

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to New Windsor that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipNew Windsor

ISP - SWF

ISPSWF

Islip Long Island

Wed 4/9

2:35 pm-7:14 pm

3 stops28h 39m

$478

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Compare providers for flights from Islip to Stewart

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Stewart in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Islip, New York-New Windsor flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Islip, New York-New Windsor flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Islip, New York-New Windsor flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Islip, New York-New Windsor flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-New Windsor flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Islip to Stewart

Have a flexible travel schedule? Discover the best time to fly to Stewart from Islip with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Can I find deals for flights from Islip to Stewart that include hotel bookings?
Yes. In addition to deals on Islip to Stewart flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to Stewart?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Stewart.
Can I find deals for business class flights from Islip to Stewart?
Yes. Cheapflights offers flight deals from Islip to Stewart by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Islip, New York to New Windsor?
Currently, October is the cheapest month in which you can book a flight from Islip, New York to New Windsor (average of $109). Flying from Islip, New York to New Windsor in August is currently the most expensive (average of $226). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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$478+ Cheap flights from Islip, NY to New Windsor (ISP - SWF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/9. Fares are subject to change and may not be available on all flights or dates of travel.