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Route
Depart
Return
Price
IslipSimpson Bay
ISP - SXM
ISPSXM
Islip Long Island
Thu 12/19
1:57 pm-2:30 pm
3 stops23h 33m
Currently, September is the cheapest month in which you can book a flight from Islip, New York to Saint Martin Island (average of $462). Flying from Islip, New York to Saint Martin Island in July is currently the most expensive (average of $684). 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.