I just booked our March 2025 trip, as the airfares were just posted. Same itinerary. Non-stop on a Saturday morning from PHL to SXM; with a return flight ten days later via Miami. I was pleasantly surprised by the airfare - About $140 less for the 2025 tickets, as opposed to the price that I paid for the tickets in 2024. I should actually say ticket, as I was able to get my wife's ticket using points - just had to pay the $96 or so in taxes.
Since the Air B&B studio that we had rented for the past three seasons at Residence Les Lataniers was no longer available, we rented a ground floor studio at Alamanda. Cost a few $ more, but it is newer and a bit closer to the beach.