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 month to fly from Ithaca to Islip, New York?

July can be a great time to fly to Islip, New York from Ithaca with a flight ticket averaging about $290. Cheapflights users have found deals in the month of July for as cheap as $115. The most expensive prices can be found in the month of May.

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

When flying from Ithaca 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 Ithaca to Islip that include hotel bookings?

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

How can I find direct flights from Ithaca to Islip?

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

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

Yes. Cheapflights offers flight deals from Ithaca 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.

$1,820+ Flights from Ithaca to Islip, NY

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Cheap flight deals from Ithaca to Islip

Round-trip from	$1,820 (United)
Popular in	May
Cheapest in	July
Average price	$172

From Ithaca Tompkins County to Islip Long Island

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Highest demand for flights based on searches. 7% potential increase in price ($23 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($10 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 Ithaca to Islip

Cheapest flights from Ithaca to Islip
Explore the most affordable flight options available from Ithaca to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2025.

Wed 11/267:40 pmITH - ISP

2 stops24h 21mMultiple Airlines

Sun 11/304:33 pmISP - ITH

2 stops31h 10mMultiple Airlines

Deal found 7/22

$1,820

Best flights from Ithaca to Islip
Discover carefully curated flight deals from Ithaca to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 23, 2025.

Wed 11/267:40 pmITH - ISP

2 stops24h 21mMultiple Airlines

Sun 11/304:33 pmISP - ITH

2 stops31h 10mMultiple Airlines

Deal found 7/22

$1,820

Fly from

Fly to

Route

Depart

Return

Price

IthacaIslip

ITH - ISP

ITHISP

Ithaca Tompkins County

Wed 11/26

7:40 pm-8:01 pm

2 stops24h 21m

Islip Long Island

Sun 11/30

4:33 pm-11:43 pm

2 stops31h 10m

$1,820

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

Best time to book a flight from Ithaca to Islip

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

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

Currently, January is the cheapest month in which you can book a flight from Ithaca to Islip, New York (average of $108). Flying from Ithaca 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 Ithaca to Islip that include hotel bookings?
Yes. In addition to deals on Ithaca to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ithaca to Islip?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ithaca to Islip.
Can I find deals for business class flights from Ithaca to Islip?
Yes. Cheapflights offers flight deals from Ithaca 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 Ithaca to Islip, New York?
Currently, January is the cheapest month in which you can book a flight from Ithaca to Islip, New York (average of $108). Flying from Ithaca 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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$1,820+ Cheap flights from Ithaca to Islip, NY (ITH - 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 11/26. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ithaca to Islip with Cheapflights

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Cheap flight deals from Ithaca to Islip

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Find flight deals from Ithaca to Islip

Cheapest flights from Ithaca to IslipExplore the most affordable flight options available from Ithaca to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2025.

Explore the most affordable flight options available from Ithaca to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Ithaca to Islip

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

Cheapflights Insights

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

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

Related info for your journey

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

How can I find direct flights from Ithaca to Islip?

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

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

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Cheapest flights from Ithaca to Islip
Explore the most affordable flight options available from Ithaca to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2025.