I have been researching some June flights for the last month and have found that the cheaper availability often does not happen until 90 day before the flights. So you may need to consider delaying booking your October flights until July.
Have a look at
Flights - Google Search.
Select one-way, First from JFK to MCO.
Then after it refreshes, select AA. [Edit: & US]
Click on the date Icon and see a calendar of prices, as well (if you wait a few seconds) a graph showing the cheapest fares over a two month period.Drill down and these are normally one or two segment routes.
Also, it seems the USair pricing is starting to infiltrate. (I had to deal with this for several years with USair in my quest for *G with AirNZ).
The routes are there but you need both the Upgrade fare basis and P or A available.
e.g. for an SA14ERP1 fare you need both S and P availability on the same route to book. The P may be there but often the S isn't.
Fire up ITA and look.
JFK-MCO for USD257 (90 SC's)
JFK/LGA-xMIA-MCO for USD377 (150 SC's)
JFK-xORD-xMIA-MCO for USD456 (270 SC's)