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.

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).

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

When flying from Appleton 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.

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

Most trusted provider : When it comes to deals on Appleton-Islip, New York flights, Cheapflights users trust FlightHub the most. FlightHub 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 Appleton-Islip, New York 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 Appleton to Islip that include hotel bookings?

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

How can I find direct flights from Appleton to Islip?

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

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

Yes. Cheapflights offers flight deals from Appleton 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.

$1,188+ Flights from Appleton to Islip, NY

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Cheap flight deals from Appleton to Islip

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 1 star
Popular in	March
Cheapest in	July
Average price	$373

Provider with most accurate pricing for Appleton Intl-Islip Long Island flight deals.

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Provider most trusted by Cheapflights users for Appleton Intl-Islip Long Island flights.

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Highest demand for flights based on searches. 21% potential increase in price ($80 potential increase over avg. RT price).

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Cheapest flight prices on average. 8% potential price decrease ($25 potential savings vs. average RT price).

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Average for round-trip flights in November 2025

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Best flights from Appleton to Islip
Discover carefully curated flight deals from Appleton to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 20, 2025.

Thu 4/26:00 amATW - ISP

1 stop25h 41mMultiple Airlines

Mon 4/69:41 amISP - ATW

2 stops12h 32mMultiple Airlines

Deal found 11/18

$1,188

Fly from

Fly to

Route

Depart

Return

Price

AppletonIslip

ATW - ISP

ATWISP

Appleton Intl

Thu 4/2

6:00 am-8:41 am

1 stop25h 41m

Islip Long Island

Mon 4/6

9:41 am-9:13 pm

2 stops12h 32m

$1,188

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

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

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

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

Currently, April is the cheapest month in which you can book a flight from Appleton to Islip, New York (average of $83). Flying from Appleton to Islip, New York in December is currently the most expensive (average of $229). 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.

Related info for your journey

Can I find deals for flights from Appleton to Islip that include hotel bookings?
Yes. In addition to deals on Appleton to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Appleton to Islip?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Appleton to Islip.
Can I find deals for business class flights from Appleton to Islip?
Yes. Cheapflights offers flight deals from Appleton 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 Appleton to Islip, New York?
Currently, April is the cheapest month in which you can book a flight from Appleton to Islip, New York (average of $83). Flying from Appleton to Islip, New York in December is currently the most expensive (average of $229). 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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$1,188+ Cheap flights from Appleton to Islip, NY (ATW - 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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Appleton to Islip with Cheapflights

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Cheap flight deals from Appleton to Islip

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Find flight deals from Appleton to Islip

Best flights from Appleton to IslipDiscover carefully curated flight deals from Appleton to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 20, 2025.

Discover carefully curated flight deals from Appleton to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 20, 2025.

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Best time to book a flight from Appleton to Islip

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

Cheapflights Insights

Everything you need to know about your flight from Appleton to Islip

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

Related info for your journey

Find useful and relevant information for your journey from Appleton 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 Appleton to Islip that include hotel bookings?

How can I find direct flights from Appleton to Islip?

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

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

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Best flights from Appleton to Islip
Discover carefully curated flight deals from Appleton to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 20, 2025.