Another option:

I just looked on Kayak for flights in mid-February from Toronto to St Thomas and the prices seemed pretty good for that time of year. $476 This was a Wednesday Departure and Thursday return.

6:55a YYZ 4:15p STT 8h 20m 1 stop (CLT)
5:40p STT 12:15a YYZ 7h 35m 1 stop (CLT)

Another option you could look at is chartering out of USVI with a pick-up in Red Hook. Short taxi ride from the airport, and you are on the BVI side of the island (STT) to begin your charter. Request to stay on the boat the night before departure. Enjoy Red Hook for the evening and get in the island frame of mind.

Your charter begins Thursday morning and it is short sail to the BVI. Highly recommend a brief stop for snorkeling in Leinster Bay, St John. Your last night could be in JVD and with a 5:40 PM departure you could sail back to Red Hook and catch that flight easily.

Food for thought. Stay away from the Saturday to Saturday the cost of flights can be significantly higher. Vacations always come down to Time vs Money - I like the extra day! <img src="http://www.traveltalkonline.com/forums/images/graemlins/Wink.gif" alt="" /> Another big plus for me with this plan is I like to be completely adjusted to island time on the weekend. The best day to go to the beach is on Saturday because most travelers are traveling.