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 ROA to ISP?

When flying from Roanoke 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 Roanoke-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 Roanoke-Islip, New York flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Roanoke-Islip, New York flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Roanoke-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 Roanoke-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 Roanoke to Islip that include hotel bookings?

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

How can I find direct flights from Roanoke to Islip?

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

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

Yes. Cheapflights offers flight deals from Roanoke 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.

$516+ Cheap Flights from Roanoke to Islip, NY

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Cheap flight deals from Roanoke to Islip

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Cheapest flights from Roanoke to Islip
Explore the most affordable flight options available from Roanoke to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.

Fri 7/104:40 pm

ROA

ISP

1 stop16h 28m

Multiple Airlines

Sat 7/182:33 pm

ISP

ROA

2 stops23h 33m

Multiple Airlines

Deal found 3/12

$516

Find flight deals from Roanoke to Islip

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$516 (Kiwi.com)
Popular in	November
Cheapest in	August
Average price	$385

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

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From Roanoke to Islip Long Island

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Highest demand for flights based on searches. 16% potential increase in price ($68 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).

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Average for round-trip flights in March 2026

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Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

RoanokeIslip

ROA - ISP

ROAISP

Roanoke

Fri 7/10

4:40 pm-9:08 am

1 stop16h 28m

Islip Long Island

Sat 7/18

2:33 pm-2:06 pm

2 stops23h 33m

$516

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Sorted by cheapest first

Most accurate provider: When it comes to deals on Roanoke-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 Roanoke-Islip, New York flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Roanoke-Islip, New York flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Roanoke-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 Roanoke-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 Roanoke to Islip

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

ROA-ISP

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 Roanoke to Islip

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

Currently, March is the cheapest month in which you can book a flight from Roanoke to Islip, New York (average of $41). Flying from Roanoke to Islip, New York in January is currently the most expensive (average of $189). 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 Roanoke to Islip that include hotel bookings?
Yes. In addition to deals on Roanoke to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Roanoke to Islip?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Roanoke to Islip.
Can I find deals for business class flights from Roanoke to Islip?
Yes. Cheapflights offers flight deals from Roanoke 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 Roanoke to Islip, New York?
Currently, March is the cheapest month in which you can book a flight from Roanoke to Islip, New York (average of $41). Flying from Roanoke to Islip, New York in January is currently the most expensive (average of $189). 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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$516+ Cheap flights from Roanoke to Islip, NY (ROA - 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.

Find cheap flights from Roanoke to Islip with Cheapflights

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Cheap flight deals from Roanoke to Islip

Cheapest flights from Roanoke to IslipExplore the most affordable flight options available from Roanoke to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.

Explore the most affordable flight options available from Roanoke to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.

Best flights from Roanoke to IslipDiscover carefully curated flight deals from Roanoke to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 12, 2026.

Discover carefully curated flight deals from Roanoke to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 12, 2026.

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Best time to book a flight from Roanoke to Islip

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Cheapflights Insights

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

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

Related info for your journey

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

How can I find direct flights from Roanoke to Islip?

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

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

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Cheapest flights from Roanoke to Islip
Explore the most affordable flight options available from Roanoke to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.

Best flights from Roanoke to Islip
Discover carefully curated flight deals from Roanoke to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 12, 2026.