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$951+ Cheap flights from New Windsor to Islip, NY (SWF - ISP)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
SWF — ISP
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheap flight deals from Stewart to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Stewart (SWF) to Islip (ISP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated junio 12, 2025.

Round-trip from

$951
(Mytrip)
From New Windsor Stewart to Islip Long Island
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Cheapest flights from Stewart to Islip
Explore the most affordable flight options available from Stewart to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/106:42 pmSWF - ISP
2 stops20h 39mMultiple Airlines
lun. 7/1411:53 amISP - SWF
2 stops24h 03mMultiple Airlines
Deal found 6/10$951

Cheapflights Fare Finder

Customize your flight search to find flights from Stewart to Islip that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
Use the filters below to find and compare flights from New Windsor to Islip that are best for you.

Fly from

Stewart

Fly to

Islip

Route

Depart

Return

Price

New WindsorIslip

SWF - ISP

SWFISP

New Windsor Stewart

jue. 7/10

6:42 pm-3:21 pm

2 stops20h 39m

Islip Long Island

lun. 7/14

11:53 am-11:56 am

2 stops24h 03m

$951

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Stewart to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Stewart 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.

Cheapflights Insights

Everything you need to know about your flight from New Windsor to Islip

Rainfall in Islip by month

Plan your trip to Islip by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Islip, New York ranges from 3.3 - 4.4 inches per month. March is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Islip, New York when rainfall is around 3.3 in.

Temperature in Islip by month

Plan your trip to Islip by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Islip, New York, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Related info for your journey

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

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

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

  • How can I find direct flights from Stewart to Islip?

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

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

    Yes. Cheapflights offers flight deals from Stewart to Islip 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 New Windsor to Islip, New York?

    Currently, January is the cheapest month in which you can book a flight from New Windsor to Islip, New York (average of $108). Flying from New Windsor to Islip, New York in November is currently the most expensive (average of $213). 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.

See more FAQs

Traveling to a place near New Windsor?

Book flights to New Windsor if you plan to visit one of these locations
Southampton
Riverhead

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