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 Charleston, West Virginia to Islip, New York?

December is one of the best times of the year to fly to Islip, New York from Charleston, West Virginia. Prices for December average $269 per person but you can even find prices for as low as $147. The most expensive prices can be found in the month of September. Opting for a December flight can save you 31% on your journey compared to booking in September

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

When flying from Charleston, West Virginia 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 Charleston to Islip that include hotel bookings?

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

How can I find direct flights from Charleston to Islip?

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

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

Yes. Cheapflights offers flight deals from Charleston 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.

$905+ Flights from Charleston, WV to Islip, NY

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Cheap flight deals from Charleston to Islip

Round-trip from	$905 (United)
Popular in	September
Cheapest in	December
Average price	$233

From Charleston Yeager to Islip Long Island

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($36 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Find flight deals from Charleston to Islip

Cheapest flights from Charleston to Islip
Explore the most affordable flight options available from Charleston to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Fri 10/35:38 pmCRW - ISP

2 stops17h 20mMultiple Airlines

Mon 10/611:53 amISP - CRW

2 stops25h 32mMultiple Airlines

Deal found 8/14

$905

Fri 10/35:38 pmCRW - ISP

2 stops19h 46mMultiple Airlines

Sun 10/54:33 pmISP - CRW

2 stops28h 53mMultiple Airlines

Deal found 8/14

$1,023

Best flights from Charleston to Islip
Discover carefully curated flight deals from Charleston to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2025.

Fri 10/35:38 pmCRW - ISP

2 stops17h 20mMultiple Airlines

Mon 10/611:53 amISP - CRW

2 stops25h 32mMultiple Airlines

Deal found 8/14

$905

Fri 10/35:38 pmCRW - ISP

2 stops19h 46mMultiple Airlines

Sun 10/54:33 pmISP - CRW

2 stops28h 53mMultiple Airlines

Deal found 8/14

$1,023

Fly from

Fly to

Route

Depart

Return

Price

CharlestonIslip

CRW - ISP

CRWISP

Charleston Yeager

Fri 10/3

5:38 pm-10:58 am

2 stops17h 20m

Islip Long Island

Mon 10/6

11:53 am-1:25 pm

2 stops25h 32m

$905

CharlestonIslip

CRW - ISP

CRWISP

Charleston Yeager

Fri 10/3

5:38 pm-1:24 pm

2 stops19h 46m

Islip Long Island

Sun 10/5

4:33 pm-9:26 pm

2 stops28h 53m

$1,023

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Best time to book a flight from Charleston to Islip

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

What is the cheapest month to book a flight from Charleston, West Virginia to Islip, New York?

Currently, January is the cheapest month in which you can book a flight from Charleston, West Virginia to Islip, New York (average of $108). Flying from Charleston, West Virginia 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 Charleston to Islip that include hotel bookings?
Yes. In addition to deals on Charleston to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Charleston to Islip?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Charleston to Islip.
Can I find deals for business class flights from Charleston to Islip?
Yes. Cheapflights offers flight deals from Charleston 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 Charleston, West Virginia to Islip, New York?
Currently, January is the cheapest month in which you can book a flight from Charleston, West Virginia to Islip, New York (average of $108). Flying from Charleston, West Virginia 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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$905+ Cheap flights from Charleston, WV to Islip, NY (CRW - 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 10/3. 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 Charleston to Islip

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Find flight deals from Charleston to Islip

Cheapest flights from Charleston to IslipExplore the most affordable flight options available from Charleston to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Explore the most affordable flight options available from Charleston to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

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

Best time to book a flight from Charleston to Islip

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

Cheapflights Insights

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

What is the cheapest month to book a flight from Charleston, West Virginia to Islip, New York?

Related info for your journey

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

How can I find direct flights from Charleston to Islip?

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

What is the cheapest month to book a flight from Charleston, West Virginia to Islip, New York?

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Cheapest flights from Charleston to Islip
Explore the most affordable flight options available from Charleston to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.