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).

How far in advance should I book a flight from Appleton to Islip, New York?

To save on the cost of your flight from Appleton to Islip, New York, book at least 12 days before your planned departure. Booking around this time can save you about 118% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $49 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $235.

What is the cheapest month to fly from Appleton to Islip, New York?

Flights from Appleton to Islip, New York lean towards being more expensive in March. Prices are generally better when you fly from Appleton to Islip, New York in September, with the cheapest ticket starting at $88.

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.

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.

$1,027+ Flights from Appleton to Islip, NY

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Cheap flight deals from Appleton to Islip

Round-trip from	$1,027 (United)
Popular in	March
Cheapest in	September
Average price	$186

From Appleton Intl to Islip Long Island

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Highest demand for flights based on searches. 25% potential increase in price ($98 potential increase over avg. RT price).

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Cheapest flight prices on average. 10% potential price decrease ($26 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Appleton to Islip

Cheapest flights from Appleton to Islip
Explore the most affordable flight options available from Appleton to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Fri 8/12:43 pmATW - ISP

2 stops23h 38mMultiple Airlines

Sun 8/317:30 amISP - ATW

2 stops15h 13mMultiple Airlines

Deal found 7/1

$1,027

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 July 3, 2025.

Fri 8/12:43 pmATW - ISP

2 stops23h 38mMultiple Airlines

Sun 8/317:30 amISP - ATW

2 stops15h 13mMultiple Airlines

Deal found 7/1

$1,027

Last-minute flights from Appleton to Islip
Discover last-minute flight deals from Appleton to Islip. Data last updated July 3, 2025 and is based on user searches.

Fri 8/12:43 pmATW - ISP

2 stops23h 38mMultiple Airlines

Sun 8/317:30 amISP - ATW

2 stops15h 13mMultiple Airlines

Deal found 7/1

$1,027

Cheapflights Fare Finder

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

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Route

Depart

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Price

AppletonIslip

ATW - ISP

ATWISP

Appleton Intl

Fri 8/1

2:43 pm-3:21 pm

2 stops23h 38m

Islip Long Island

Sun 8/31

7:30 am-9:43 pm

2 stops15h 13m

$1,027

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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, January is the cheapest month in which you can book a flight from Appleton to Islip, New York (average of $108). Flying from Appleton 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.

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, January is the cheapest month in which you can book a flight from Appleton to Islip, New York (average of $108). Flying from Appleton 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.

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Complete your trip

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$1,027+ 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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Appleton to Islip

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Find flight deals from Appleton to Islip

Cheapest flights from Appleton to IslipExplore the most affordable flight options available from Appleton to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Explore the most affordable flight options available from Appleton to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Cheapflights Fare Finder

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

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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Cheapest flights from Appleton to Islip
Explore the most affordable flight options available from Appleton to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.