To save on the cost of your flight from Belfast International to Islip, book at least 61 days before your planned departure. Booking around this time can save you about 49% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £365 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £449.
Due to multiple factors, expect to potentially pay more when booking in July. For low rates, March can be a great choice for travel to Islip. Flights to Islip from Belfast International in March are about £310 on average during March, but can be found for as low as £227.
At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Belfast International and Islip for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.
The rainfall in Belfast International is generally same as the rainfall in Islip. This will continue over the next 26 days.
Temperatures around the 29 °Cs can be experienced in July. The weather in Islip is hotter than in Belfast International. Plan for potential changes in flight availability as peak weather approaches in this location.