What is your departure city (LHR?) and I'm assuming you are flying into Kingston? I can't think of the site now (sleepy) but I know it will come to me in the morning....something like faretracker.com that tracks the highs and lows of airfare pricing. I think
www.bing.com has something as well to track prices even though the prices that they show are NEVER the best deal.
Lol, Jaigo is correct, move to Miami or one of the other cities in the US that offer non stop deals......just don't move to one that is only serviced by Air Jamaica since they are pulling out and selling out (closing routes and under new owners in under 2 months from now). If you have a sense of humor look for my thread where I'm helping them sell two of their planes for $17,000,000 USD each............I'm willing to settle for CASH offers.