Fly from
Fly to
Route
Depart
Return
Price
LondonIslip
LHR - ISP
LHRISP
London Heathrow
Fri 1/3
10:00 am-1:17 pm
3 stops32h 17m
Islip Long Island
Fri 1/10
1:57 pm-10:50 am
2 stops15h 53m
Currently, December is the cheapest month in which you can book a flight from London to Islip, New York (average of $89). Flying from London to Islip, New York in September is currently the most expensive (average of $207). 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.
In terms of precipitation, rainfall in Islip, New York ranges from 3.3 - 4.4 inches per month. March is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Islip, New York when rainfall is around 3.3 in.
If weather is an important factor for your trip to Islip, New York, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).