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Cheap Flights from Islip to Raleigh

Explore the cheapest flights from Islip to Raleigh in the next three months. Based on Trip.com's data from the latest 7 days, one-way fares start at TRY 2,668, and round-trip tickets start at TRY 14,429.

      • ISP 20:35
        11h 38m
        1 stop
        RDU 08:13
        Islip - Raleigh | Sun, Dec 21 | Frontier Airlines
        RDU 20:14
        15h 11m
        1 stop
        ISP 11:25
        Raleigh - Islip | Mon, Dec 22 | Frontier Airlines
        TRY 14,429 TRY 30,706
        53% OFF
        53% OFF
        TRY 30,706 TRY 14,429
      • ISP 19:56
        11h 57m
        1 stop
        RDU 07:53
        Islip - Raleigh | Sat, Jan 10 | Frontier Airlines
        RDU 13:40
        6h 11m
        1 stop
        ISP 19:51
        Raleigh - Islip | Mon, Jan 12 | Frontier Airlines
        TRY 15,399 TRY 30,706
        50% OFF
        50% OFF
        TRY 30,706 TRY 15,399
      • ISP 18:40
        13h 48m
        1 stop
        RDU 08:28
        Islip - Raleigh | Sat, Dec 20 | Frontier Airlines
        RDU 20:04
        23h 36m
        1 stop
        ISP 19:40
        Raleigh - Islip | Sun, Dec 21 | Frontier Airlines
        TRY 15,545 TRY 30,706
        49% OFF
        49% OFF
        TRY 30,706 TRY 15,545
      • ISP 12:25
        10h 34m
        1 stop
        RDU 22:59
        Islip - Raleigh | Wed, Jan 14 | Jetblue Airways
        RDU 07:00
        28h 35m
        1 stop
        ISP 11:35
        Raleigh - Islip | Tue, Jan 20 | Jetblue Airways
        TRY 17,315
        44% OFF
        TRY 30,706 TRY 17,315
      • ISP 08:00
        8h 5m
        1 stop
        RDU 16:05
        Islip - Raleigh | Tue, Jan 13 | Frontier Airlines
        RDU 12:47
        6h 16m
        1 stop
        ISP 19:03
        Raleigh - Islip | Thu, Jan 15 | Frontier Airlines
        TRY 17,388
        43% OFF
        TRY 30,706 TRY 17,388
      • ISP 20:35
        12h 13m
        1 stop
        RDU 08:48
        Islip - Raleigh | Fri, Dec 19 | Frontier Airlines
        RDU 09:08
        10h 32m
        1 stop
        ISP 19:40
        Raleigh - Islip | Mon, Dec 22 | Frontier Airlines
        TRY 19,285
        37% OFF
        TRY 30,706 TRY 19,285
      • ISP 12:20
        6h 8m
        1 stop
        RDU 18:28
        Islip - Raleigh | Tue, Dec 30 | Frontier Airlines
        RDU 20:14
        15h 11m
        1 stop
        ISP 11:25
        Raleigh - Islip | Wed, Dec 31 | Frontier Airlines
        TRY 20,310
        34% OFF
        TRY 30,706 TRY 20,310
      • ISP 20:35
        11h 39m
        1 stop
        RDU 08:14
        Islip - Raleigh | Mon, Dec 22 | Frontier Airlines
        RDU 09:08
        10h 32m
        1 stop
        ISP 19:40
        Raleigh - Islip | Mon, Dec 29 | Frontier Airlines
        TRY 20,316
        34% OFF
        TRY 30,706 TRY 20,316
      • ISP 10:46
        21h 42m
        1 stop
        RDU 08:28
        Islip - Raleigh | Sat, Dec 20 | Jetblue Airways
        RDU 20:04
        13h 57m
        1 stop
        ISP 10:01
        Raleigh - Islip | Sun, Dec 21 | Frontier Airlines
        TRY 21,110
        31% OFF
        TRY 30,706 TRY 21,110
      • ISP 12:25
        10h 34m
        1 stop
        RDU 22:59
        Islip - Raleigh | Fri, Jan 9 | Jetblue Airways
        RDU 18:40
        16h 53m
        1 stop
        ISP 11:33
        Raleigh - Islip | Sun, Jan 11 | Jetblue Airways
        TRY 22,723
        26% OFF
        TRY 30,706 TRY 22,723
      • ISP 13:00
        17h 25m
        1 stop
        RDU Invalid Date
        Islip - Raleigh | Thu, Dec 18 | Normal Airline
        RDU 15:00
        6h
        Direct
        ISP 16:00
        Raleigh - Islip | Sat, Dec 20 | Normal Airline
        Find More Flights
        Find More Flights
      • ISP 19:43
        18h 16m
        1 stop
        RDU 13:59
        Islip - Raleigh | Mon, Jan 26 | Frontier Airlines
        TRY 2,668 TRY 14,108
        81% OFF
        81% OFF
        TRY 14,108 TRY 2,668
      • ISP 20:40
        20h 12m
        1 stop
        RDU 16:52
        Islip - Raleigh | Sun, Jan 11 | Frontier Airlines
        TRY 2,850 TRY 14,108
        80% OFF
        80% OFF
        TRY 14,108 TRY 2,850
      • ISP 08:00
        9h 22m
        1 stop
        RDU 17:22
        Islip - Raleigh | Sat, Jan 17 | Frontier Airlines
        TRY 3,123 TRY 14,108
        78% OFF
        78% OFF
        TRY 14,108 TRY 3,123
      • ISP 19:43
        19h 57m
        1 stop
        RDU 15:40
        Islip - Raleigh | Thu, Jan 22 | Frontier Airlines
        TRY 3,129
        78% OFF
        TRY 14,108 TRY 3,129
      • ISP 21:43
        12h 4m
        1 stop
        RDU 09:47
        Islip - Raleigh | Fri, Jan 23 | Frontier Airlines
        TRY 3,159
        78% OFF
        TRY 14,108 TRY 3,159
      • ISP 16:40
        24h 15m
        1 stop
        RDU 16:55
        Islip - Raleigh | Mon, Jan 5 | Frontier Airlines
        TRY 3,559
        75% OFF
        TRY 14,108 TRY 3,559
      • ISP 20:54
        17h 39m
        1 stop
        RDU 14:33
        Islip - Raleigh | Fri, Jan 16 | Frontier Airlines
        TRY 3,765
        73% OFF
        TRY 14,108 TRY 3,765
      • ISP 20:29
        20h 15m
        1 stop
        RDU 16:44
        Islip - Raleigh | Tue, Dec 16 | Frontier Airlines
        TRY 4,378
        69% OFF
        TRY 14,108 TRY 4,378
      • ISP 20:24
        11h 49m
        1 stop
        RDU 08:13
        Islip - Raleigh | Sun, Jan 4 | Frontier Airlines
        TRY 4,935
        65% OFF
        TRY 14,108 TRY 4,935
      • ISP 20:35
        20h 22m
        1 stop
        RDU 16:57
        Islip - Raleigh | Fri, Dec 19 | Frontier Airlines
        TRY 10,440
        26% OFF
        TRY 14,108 TRY 10,440
      • ISP 13:00
        17h 25m
        1 stop
        RDU Invalid Date
        Islip - Raleigh | Thu, Dec 18 | Normal Airline
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flying from Islip to Raleigh

The distance between Islip and Raleigh is approximately 737.92km. It takes around 1 hour 38 minutes on average to fly from Islip to Raleigh. Based on Trip.com's data, travel demand peaks in December. The off-season for travel is September.

Cheapest one-way flight priceTRY 2,668
Cheapest return ticket priceTRY 14,429
Off-season for travelSeptember
Peak season for travelDecember
Flight distance737.92km
Average flight time1 hour 38 minutes
Flight statistics for the Islip–Raleigh route are based on aggregated booking data from Trip.com over the past 12 months.

Cheapest time to fly from Islip to Raleigh

The cheapest time for Islip to Raleigh flights: Jan 25 to Feb 1 — one way flight prices from TRY 2,667.

Cheapest flights
From price
Search
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
  • 815
  • 1522

  • Mar

    221
  • 18
Displayed prices are calculated based on the lowest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • Which airlines offer the cheapest flights from Islip (ISP) to Raleigh (RDU)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as TRY 2,668 on Cheapest nonstop routes (e.g. ISP to RDU on Mon, Jan 26), while Frontier Airlines offers Cheapest nonstop round-trips from TRY 14,429 departing on Sun, Dec 21 and returning on Mon, Dec 22.
  • It takes about 1 hour 38 minutes to fly from Islip (ISP) to Raleigh (RDU).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Islip to Raleigh is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Islip to Raleigh, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Mon, Jan 26, with one-way flights priced at just TRY 2,668.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Raleigh travel is around December.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Islip to Raleigh is September, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Islip to Raleigh on December 21, 2025 with Frontier Airlines, with prices starting at TRY 14,428.
  • The time difference between Raleigh and Islip is 0h.
  • Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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