We just bought our tickets SFO-MCO for our 2/22/03 cruise for $288 pp with Continental. It's a little more that we would like to pay, but an excellent fare nonetheless. My DH and I always seem to buy our airfare months in advance, whenever the prices seem reasonable and unlikely to get cheaper. While they still might end up for less, we're not expecting a whole bunch of deals for FL during the winter!
I actually found this fare via Orbitz, searching for SJC-MCO - it told me that SFO would be cheaper, and by golly, it was! I then bought the tickets direct from Continental.