Airfares to STT have increased dramatically this year for the prime weeks, 51, 52, and 7. We own week 7 but I also have two regular plat weeks that I use on either side of week 7. We go BC non-stop from JFK and those fares have remained constant over the past decade or so, about $600 to $800 R/T. My children come down on week 7 and those fares have fluctuated wildly over the years. For 2018 the lowest non-stop fares from JFK were $1200 R/T for coach with Delta asking $2400. My son finally found a one stop flight for $800 in coach with AA. Three legs of that trip are First class but it's an 8 hr trip instead of 4.
The thing that puzzles me is that I can rent a car cheaper in St Thomas in February than I can at Ocean Pointe in July.