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$57+ Cheap flights from Raleigh to Islip, NY (RDU - ISP)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ISP
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheapflights Tip: The best prices from Raleigh-Durham to Islip Long Island are usually found in February or March, booked 66 days in advance, depart on a Thursday or Wednesday and return on a Friday

Cheap flight deals from Raleigh to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Raleigh (RDU) to Islip (ISP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2025.

Round-trip from

$128
(CheapOair)

One-way from

$57
(CheapOair)

Popular in

July

Cheapest in

February

Average price

$305

Good round-trip deal

$118 or less

Good one-way deal

$139 or less
From Raleigh-Durham to Islip Long Island
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One-way flight from Raleigh-Durham to Islip Long Island
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Highest demand for flights based on searches. 23% potential increase in price ($61 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Raleigh-Durham to Islip Long Island.
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Price to beat on a one-way flight from Raleigh-Durham to Islip Long Island.
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Find flight deals from Raleigh to Islip

Cheapest flights from Raleigh to Islip
Explore the most affordable flight options available from Raleigh to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This CheapOair deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/712:13 pmRDU - ISP
Nonstop1h 32mBreeze Airways
Mon 11/102:25 pmISP - RDU
Nonstop1h 39mBreeze Airways
Deal found 7/28$113
This CheapOair deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/212:37 pmRDU - ISP
1 stop7h 05mFrontier
Wed 8/64:45 pmISP - RDU
1 stop24h 42mFrontier
Deal found 7/28$179
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/226:10 amRDU - ISP
2 stops6h 15mSouthwest
Mon 10/275:30 amISP - RDU
1 stop4h 00mSouthwest
Deal found 7/28$213
This FlightHub deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/226:59 pmRDU - ISP
1 stop24h 54mMultiple Airlines
Mon 10/272:25 pmISP - RDU
Nonstop1h 39mMultiple Airlines
Deal found 7/28$216

Cheapflights Fare Finder

 
Customize your flight search to find flights from Raleigh to Islip that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
Use the filters below to find and compare flights from Raleigh to Islip that are best for you.

Fly from

Raleigh

Fly to

Islip

Route

Depart

Return

Price

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Fri 10/24

12:13 pm-1:45 pm

Nonstop1h 32m

Islip Long Island

Mon 10/27

2:25 pm-4:04 pm

Nonstop1h 39m

$128

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Sat 8/2

12:37 pm-7:42 pm

1 stop7h 05m

Islip Long Island

Wed 8/6

4:45 pm-5:27 pm

1 stop24h 42m

$179

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Wed 10/22

6:10 am-12:25 pm

2 stops6h 15m

Islip Long Island

Mon 10/27

5:30 am-9:30 am

1 stop4h 00m

$213

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Wed 10/22

6:59 pm-7:53 pm

1 stop24h 54m

Islip Long Island

Mon 10/27

2:25 pm-4:04 pm

Nonstop1h 39m

$216

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Mon 9/29

12:13 pm-1:45 pm

Nonstop1h 32m

$57

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Sat 10/25

2:14 pm-7:53 pm

1 stop5h 39m

$83

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Mon 9/15

3:00 pm-10:55 pm

2 stops7h 55m

$179

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Sun 8/17

9:27 am-10:04 am

3 stops24h 37m

$338

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Raleigh to Islip

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

How far ahead should I book a flight from Raleigh to Islip, New York?

Use this chart to determine the optimal time to book a round-trip flight from Raleigh to Islip. Price data was last updated on July 25, 2025.

Booking 54 days in advance of your planned departure date is, on average, the best time to get cheap flights from Raleigh to Islip, New York. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

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

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

Find hourly flight availability from Raleigh to Islip. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

It’s optimal to fly from Raleigh to Islip, New York in the morning. By choosing this option you can save up to 40% on the cost of your flight, compared to a flight at noon.

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Islip. Reviews last updated July 29, 2025.
See what other customers who have flown with Southwest, Breeze Airways, and Frontier from Raleigh to Islip have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Breeze Airways
8.0
Very good
190 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Frontier
5.9
Fair
3,238 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from Raleigh to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Raleigh to Islip, New York flight route?

    Flights from Raleigh-Durham to Islip Long Island have been viewed 4 times in the past calendar month.

  • What are the cheapest airlines flying from Raleigh to Islip, New York round-trip?

    According to our current data, Breeze Airways ($128), Frontier ($179), and Southwest ($213) offers the cheapest pricing from Raleigh to Islip, New York. Breeze Airways is currently priced 35% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Raleigh to Islip, New York one-way?

    The cheapest airline one-way is Breeze Airways, with whom users have recently found tickets for as low as $57. However, be on the lookout for offers from Frontier and Southwest, as they are both options that can get you from Raleigh to Islip, New York for a low price.

  • What are the cheapest flights from Raleigh to Islip, New York?

    Looking for the cheapest flight from Raleigh to Islip, New York? While on average our users pay $178, our data indicates the cheapest price to be $76. The most popular route (Raleigh-Durham - Islip Long Island), is priced around $113.

  • Can I find deals for flights from Raleigh to Islip that include hotel bookings?

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

  • How can I find direct flights from Raleigh to Islip?

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

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

    Yes. Cheapflights offers flight deals from Raleigh 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 Raleigh to Islip, New York?

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

See more FAQs

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead
Southampton

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Alternative routes for Raleigh to Islip

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Top 3 airlines flying from Raleigh to Islip

Discover the top 3 airlines that operate flights from Raleigh to Islip. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$49Average$163FlexibilityNo cancel feeOn-time62%
Breeze AirwaysCheapest$95Average$167FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$248Average$356FlexibilityNo cancel feeOn-time63%

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