I'm afraid your options are going to be very limited at this point due to both high demand during that period of the year and the advance purchase requirements on cheaper fares. Ideally, you want to be booking at least a month out from flights to meet advance purchase requirements on cheaper fares. Fares are also generally signficantly cheaper during the first couple weeks of December instead of the last two. Although reasonable fares can often be found if willing to travel on Christmas Day. The AF/KL PE fares on JFK-DXB mentioned above are available in the $1350 range and generate $3.4K MQDs as noted, but the soonest there is availability for these fares isn't until around mid-January at this point.

I did manage to find options on AM for JFK-PTY in Premier class in December that earn about $2150 MQDs roundtrip for about $1260. Unfortunately, it requires overnight layovers in MEX in both directions of travel. So you will also need to factor in lodging costs and your time here.