Fly from
Fly to
Route
Depart
Return
Price
Niagara FallsSaint Thomas Island
IAG - STT
IAGSTT
Niagara Falls
Sat 2/15
9:45 am-2:47 pm
3 stops28h 02m
Saint Thomas Island Cyril E King
Thu 2/20
11:35 am-6:40 pm
3 stops32h 05m
Currently, September is the cheapest month in which you can book a flight from Niagara Falls, New York to Saint Thomas Island (average of $435). Flying from Niagara Falls, New York to Saint Thomas Island in June is currently the most expensive (average of $606). 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.