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 Roanoke to Islip, New York?

Find a great deal and save up to 66% by booking at least 36 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Roanoke to Islip, New York within the next two weeks, with the cheapest ticket starting at $360.

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

Our data shows that August tends to be the cheapest month to fly to Islip, New York from Roanoke. Users have commonly found prices around $371 for the month, but tickets can be as low as $241. Due to multiple factors, prepare for potentially higher prices in December.

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.

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.

$1,004+ Cheap Flights from Roanoke to Islip, NY

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Cheap flight deals from Roanoke to Islip

Round-trip from	$1,004 (United)
Popular in	December
Cheapest in	August
Average price	$314

From Roanoke to Islip Long Island

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($21 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($6 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 Roanoke to Islip

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 August 17, 2025.

Sun 9/76:20 amROA - ISP

2 stops13h 41mMultiple Airlines

Sun 9/147:30 amISP - ROA

2 stops30h 33mMultiple Airlines

Deal found 8/16

$1,004

Sat 8/165:42 pmROA - ISP

2 stops19h 42mMultiple Airlines

Sat 8/234:33 pmISP - ROA

2 stops6h 51mMultiple Airlines

Deal found 8/15

$1,022

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 August 17, 2025.

Sun 9/76:20 amROA - ISP

2 stops13h 41mMultiple Airlines

Sun 9/147:30 amISP - ROA

2 stops30h 33mMultiple Airlines

Deal found 8/16

$1,004

Last-minute flights from Roanoke to Islip
Discover last-minute flight deals from Roanoke to Islip. Data last updated August 17, 2025 and is based on user searches.

Sat 8/165:42 pmROA - ISP

2 stops19h 42mMultiple Airlines

Sat 8/234:33 pmISP - ROA

2 stops6h 51mMultiple Airlines

Deal found 8/15

$1,022

Sun 9/76:20 amROA - ISP

2 stops13h 41mMultiple Airlines

Sun 9/147:30 amISP - ROA

2 stops30h 33mMultiple Airlines

Deal found 8/16

$1,004

Fly from

Fly to

Route

Depart

Return

Price

RoanokeIslip

ROA - ISP

ROAISP

Roanoke

Sun 9/7

6:20 am-8:01 pm

2 stops13h 41m

Islip Long Island

Sun 9/14

7:30 am-2:03 pm

2 stops30h 33m

$1,004

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

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.

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

Islip, New York car rentals

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$1,004+ 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 9/7. 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

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Find 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 August 17, 2025.

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 August 17, 2025.

Cheapflights Fare Finder

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

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.

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?

Traveling to a place near 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 August 17, 2025.