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Flights from Islip to Belfast

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

      • ISP 10:19 AM
        22h 41m
        2 stops
        BHD 2:00 PM
        Islip - Belfast | Thu, Dec 11 | Frontier Airlines
        BHD 6:35 AM
        35h 7m
        2 stops
        ISP 12:42 PM
        Belfast - Islip | Thu, Dec 18 | British Airways
        $1,080 $1,368
        21% OFF
        21% OFF
        $1,368 $1,080
      • ISP 10:45 AM
        22h 15m
        2 stops
        BHD 2:00 PM
        Islip - Belfast | Thu, Dec 11 | Jetblue Airways
        BHD 6:35 AM
        32h 26m
        2 stops
        ISP 10:01 AM
        Belfast - Islip | Thu, Dec 18 | British Airways
        $1,217 $1,368
        11% OFF
        11% OFF
        $1,368 $1,217
      • ISP 1:00 PM
        17h 25m
        1 stop
        BFS Invalid Date
        Islip - Belfast | Fri, Dec 12 | Normal Airline
        BFS 3:00 PM
        6h
        Nonstop
        ISP 4:00 PM
        Belfast - Islip | Sun, Dec 14 | Normal Airline
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Displayed flight fares from Islip to Belfast are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight Info | Islip to Belfast

The distance between Islip and Belfast is approximately 5,044.35 km. Based on Trip.com's data travel demand peaks in January. The off-season for travel is September.

Cheapest round-trip ticket price$1,080
Off-season for travelSeptember
Peak season for travelJanuary
Flight distance5,044.35 km

Frequently Asked Questions

  • When is the best time to book flights from Islip to Belfast?

    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 Belfast 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 Belfast, you can use various tools on Trip.com:
    · 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 Belfast travel is around January.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Islip to Belfast is September, when demand for travel is lower.
  • The time difference between Belfast and Islip is 5h.
  • 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.

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