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Flights from Islip to Las Vegas

Find the cheapest flights from Islip to Las Vegas within the next three months. Book one-way flights from TWD 3,585 or return tickets from TWD 9,335.

      • ISP 11:50
        11h 55m
        1 stop
        LAS 20:45
        Islip - Las Vegas | Fri, Dec 12 | Jetblue Airways
        LAS 22:20
        21h 24m
        1 stop
        ISP 22:44
        Las Vegas - Islip | Tue, Dec 16 | Frontier Airlines
        TWD 9,335 TWD 31,406
        70% OFF
        70% OFF
        TWD 31,406 TWD 9,335
      • ISP 20:29
        16h 14m
        1 stop
        LAS 09:43
        Islip - Las Vegas | Fri, Dec 12 | Frontier Airlines
        LAS 22:20
        21h 24m
        1 stop
        ISP 22:44
        Las Vegas - Islip | Tue, Dec 16 | Frontier Airlines
        TWD 10,578 TWD 31,406
        66% OFF
        66% OFF
        TWD 31,406 TWD 10,578
      • ISP 12:20
        23h 59m
        1 stop
        LAS 09:19
        Islip - Las Vegas | Thu, Dec 18 | Frontier Airlines
        LAS 22:20
        10h 5m
        1 stop
        ISP 11:25
        Las Vegas - Islip | Mon, Dec 22 | Frontier Airlines
        TWD 13,386 TWD 31,406
        56% OFF
        56% OFF
        TWD 31,406 TWD 13,386
      • ISP 20:54
        17h 48m
        1 stop
        LAS 11:42
        Islip - Las Vegas | Fri, Jan 16 | Frontier Airlines
        LAS 21:59
        10h 34m
        1 stop
        ISP 11:33
        Las Vegas - Islip | Mon, Jan 19 | Spirit Airlines
        TWD 15,203
        52% OFF
        TWD 31,406 TWD 15,203
      • ISP 11:50
        9h 32m
        1 stop
        LAS 18:22
        Islip - Las Vegas | Sat, Dec 13 | Jetblue Airways
        LAS 23:59
        8h 6m
        1 stop
        ISP 11:05
        Las Vegas - Islip | Sat, Dec 13 | Jetblue Airways
        TWD 16,865
        46% OFF
        TWD 31,406 TWD 16,865
      • ISP 09:59
        17h 38m
        1 stop
        LAS 00:37
        Islip - Las Vegas | Sat, Dec 13 | Cape Air
        LAS 23:59
        8h 6m
        1 stop
        ISP 11:05
        Las Vegas - Islip | Mon, Dec 15 | Jetblue Airways
        TWD 18,439
        41% OFF
        TWD 31,406 TWD 18,439
      • ISP 12:25
        11h 5m
        1 stop
        LAS 20:30
        Islip - Las Vegas | Thu, Jan 15 | Jetblue Airways
        LAS 22:21
        10h 14m
        1 stop
        ISP 11:35
        Las Vegas - Islip | Thu, Jan 22 | Jetblue Airways
        TWD 18,607
        41% OFF
        TWD 31,406 TWD 18,607
      • ISP 07:30
        19h 28m
        1 stop
        LAS 23:58
        Islip - Las Vegas | Tue, Feb 3 | Cape Air
        LAS 11:30
        18h 25m
        1 stop
        ISP 08:55
        Las Vegas - Islip | Wed, Feb 4 | Jetblue Airways
        TWD 19,330
        38% OFF
        TWD 31,406 TWD 19,330
      • ISP 20:35
        16h 8m
        1 stop
        LAS 09:43
        Islip - Las Vegas | Mon, Dec 29 | Frontier Airlines
        LAS 21:50
        10h 43m
        1 stop
        ISP 11:33
        Las Vegas - Islip | Tue, Jan 6 | Spirit Airlines
        TWD 19,621
        38% OFF
        TWD 31,406 TWD 19,621
      • ISP 10:46
        30h 58m
        1 stop
        LAS 14:44
        Islip - Las Vegas | Wed, Dec 31 | Jetblue Airways
        LAS 17:08
        13h 53m
        1 stop
        ISP 10:01
        Las Vegas - Islip | Sun, Jan 4 | Frontier Airlines
        TWD 21,984
        30% OFF
        TWD 31,406 TWD 21,984
      • ISP 13:00
        17h 25m
        1 stop
        LAS Invalid Date
        Islip - Las Vegas | Thu, Dec 11 | Normal Airline
        LAS 15:00
        6h
        Direct
        ISP 16:00
        Las Vegas - Islip | Sat, Dec 13 | Normal Airline
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Displayed flight fares from Islip to Las Vegas are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight details for Islip to Las Vegas

The distance between Islip and Las Vegas is approximately 3,665.61 km. Based on Trip.com's data travel demand peaks in July. The off-season for travel is September.

Cheapest one-way flight priceTWD 3,585
Cheapest round-trip ticket priceTWD 9,335
Off-season for travelSeptember
Peak season for travelJuly
Flight distance3,665.61 km

Find the best time to fly from Islip to Las Vegas

The cheapest time for Islip to Las Vegas flights: Jan 11 to Jan 18 — one way flight prices from TWD 3,430.

Cheapest flights
From price
Search
  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
  • 815
  • 1522

  • Mar

    221
Displayed fare trends are based on Trip.com's aggregated average of the lowest flight prices from Islip to Las Vegas, calculated over the upcoming 10 weeks.

Flight FAQs

  • What are the cheapest flights from Islip to Las Vegas (ISP-LAS)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as TWD 3,585 on Cheapest nonstop routes (e.g. ISP to LAS on Sun, Jan 11), while Jetblue Airways offers Cheapest nonstop round-trips from TWD 9,335 departing on Fri, Dec 12 and returning on Tue, Dec 16.
  • 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 Las Vegas 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 Las Vegas, 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 Sun, Jan 11, with one-way flights priced at just TWD 3,585.
    · 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 Las Vegas travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Islip to Las Vegas 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 Las Vegas on December 12, 2025 with Jetblue Airways, with prices starting at TWD 9,334.
  • The time difference between Las Vegas and Islip is 3h.
  • Tickets can only be changed or canceled 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.