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$51+ Cheap flights from Raleigh to Islip (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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — ISP
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 58 days in advance, depart on a Wednesday or Thursday 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 September 11, 2025.

Round-trip from

$107
(CheapOair)

One-way from

$51
(CheapOair)

Popular in

July

Cheapest in

February

Average price

$223

Good round-trip deal

$271 or less

Good one-way deal

$56 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 ($64 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 11, 2025.

This CheapOair deal was found by Cheapflights users on 9/8. 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 10/3112:13 pmRDU - ISP
Nonstop1h 32mBreeze Airways
Mon 11/32:25 pmISP - RDU
Nonstop1h 39mBreeze Airways
Deal found 9/8$107
This CheapOair deal was found by Cheapflights users on 9/10. 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 11/1412:13 pmRDU - ISP
Nonstop1h 32mBreeze Airways
Mon 11/172:25 pmISP - RDU
Nonstop1h 39mBreeze Airways
Deal found 9/10$132
This CheapOair deal was found by Cheapflights users on 9/10. 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 9/2612:21 pmRDU - ISP
1 stop22h 34mFrontier
Sun 9/289:49 amISP - RDU
1 stop7h 22mFrontier
Deal found 9/10$144
This CheapOair deal was found by Cheapflights users on 9/8. 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 9/199:25 pmRDU - ISP
1 stop18h 58mFrontier
Sun 9/219:49 amISP - RDU
1 stop7h 22mFrontier
Deal found 9/8$154
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2412:13 pmRDU - ISP
Nonstop1h 32mBreeze Airways
Mon 10/272:25 pmISP - RDU
Nonstop1h 39mBreeze Airways
Deal found 9/9$158
This Mytrip deal was found by Cheapflights users on 9/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/38:23 pmRDU - ISP
1 stop14h 32mFrontier
Mon 10/65:05 pmISP - RDU
1 stop18h 25mFrontier
Deal found 9/11$164
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/186:05 pmRDU - ISP
1 stop14h 54mFrontier
Thu 10/239:49 amISP - RDU
1 stop6h 05mFrontier
Deal found 9/9$167
This CheapOair deal was found by Cheapflights users on 9/10. 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.
Tue 10/146:30 amRDU - ISP
1 stop28h 27mFrontier
Thu 10/169:37 pmISP - RDU
1 stop15h 23mFrontier
Deal found 9/10$168
This CheapOair deal was found by Cheapflights users on 9/10. 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 10/38:23 pmRDU - ISP
1 stop14h 32mFrontier
Sun 10/59:49 amISP - RDU
1 stop7h 22mFrontier
Deal found 9/10$170
This CheapOair deal was found by Cheapflights users on 9/8. 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.
Thu 9/189:02 pmRDU - ISP
1 stop13h 38mFrontier
Sun 9/2111:25 amISP - RDU
1 stop22h 28mFrontier
Deal found 9/8$172
This CheapOair deal was found by Cheapflights users on 9/10. 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.
Wed 10/17:00 pmRDU - ISP
1 stop15h 55mFrontier
Fri 10/35:12 pmISP - RDU
1 stop23h 59mFrontier
Deal found 9/10$173

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 September 11, 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 11/14

12:13 pm-1:45 pm

Nonstop1h 32m

Islip Long Island

Mon 11/17

2:25 pm-4:04 pm

Nonstop1h 39m

$132

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Fri 10/24

10:23 am-10:37 am

1 stop24h 14m

Islip Long Island

Sun 10/26

9:52 am-3:41 pm

1 stop5h 49m

$144

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Fri 9/26

12:21 pm-10:55 am

1 stop22h 34m

Islip Long Island

Sun 9/28

9:49 am-5:11 pm

1 stop7h 22m

$144

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Sat 11/15

9:09 am-8:02 am

1 stop22h 53m

Islip Long Island

Mon 11/17

9:54 am-5:42 pm

1 stop7h 48m

$144

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Sat 10/18

6:05 pm-8:59 am

1 stop14h 54m

Islip Long Island

Tue 10/21

9:37 pm-11:30 am

1 stop13h 53m

$144

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Sat 9/27

6:06 pm-9:04 am

1 stop14h 58m

Islip Long Island

Wed 10/1

11:35 am-9:53 am

1 stop22h 18m

$154

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Fri 10/3

8:23 pm-10:55 am

1 stop14h 32m

Islip Long Island

Sun 10/5

9:49 am-5:11 pm

1 stop7h 22m

$170

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Fri 11/14

4:13 pm-10:55 am

1 stop18h 42m

Islip Long Island

Sun 11/16

9:27 pm-8:43 am

1 stop11h 16m

$173

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Sat 10/25

6:05 pm-9:07 am

1 stop15h 02m

Islip Long Island

Sun 10/26

9:47 pm-9:35 am

1 stop11h 48m

$173

RaleighIslip

RDU - ISP

RDUISP

Raleigh-Durham

Thu 10/9

10:50 pm-9:04 am

1 stop10h 14m

Islip Long Island

Sun 10/12

9:44 am-12:20 pm

1 stop26h 36m

$184

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 23 results
1
2
3

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?

Use this chart to determine the optimal time to book a round-trip flight from Raleigh to Islip. Price data was last updated on August 29, 2025.

To ensure you get the cheapest price possible for a flight from Raleigh to Islip, you should look to book at least 57 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Raleigh to Islip (average of $108). Flying from Raleigh to Islip 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 September 11, 2025.

It’s optimal to fly from Raleigh to Islip in the morning. By choosing this option you can save up to 44% 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 September 11, 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
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Breeze Airways
8.0
Very good
205 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 flight route?

    This flight path from Raleigh-Durham to Islip Long Island was viewed by 4 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Raleigh to Islip?

    For as low as $132, Breeze Airways can have you in Islip from Raleigh in 1h 32m. The distance between Raleigh and Islip is about 458 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Frontier, at $49, was found to be the cheapest airline from Raleigh to Islip.Alternate airlines to your destination round-trip include Breeze Airways and Southwest. Users have found that Frontier is 76% cheaper than the other options available to this destination.

  • What are the cheapest flights from Raleigh to Islip?

    Looking for the cheapest flight from Raleigh to Islip? While on average our users pay $189, our data indicates the cheapest price to be $49. The most popular route (Raleigh-Durham - Islip Long Island), is priced around $117.

  • 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?

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

See prices for flight routes from nearby airports that may be better suited for you.
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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$49Average$208FlexibilityNo cancel feeOn-time62%
Breeze AirwaysCheapest$95Average$169FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$247Average$355FlexibilityNo cancel feeOn-time63%

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