The best thing to do is start looking at current rates right now. Then when the rates become available for your time (300 days in advance), you then have an idea of what the rates run. Watch the prices and when you find the one you want book it!
We book ours fairly far out as the good flight times seem to book up quickly. We don't like waiting until the last minutes (or last few months) to book as we will end up with flights with very long layovers and horrible flight times either getting into MBJ late or night and/or leaving Jamaica at the crack of dawn.
It is kinda a guessing game, but start your research now and you will have a better idea of what to expect when it comes time to book your flight.
Juliann & Jeff
Jamaica Soon Come