American Airlines has a low fare around $293 round trip for Los Angeles to San Juan, Puerto Rico on flight departures next week through the first part of December. I call this a Go Fast fare. There have been many of these low fares lately for travel the week before and week after Thanksgiving holiday. This deal is even good for Thanksgiving week travel between LAX and Puerto Rico.
The main problem I found with these Puerto Rico fares are long airport layovers or overnight itineraries in Miami. Here is one of the better itineraries.
American Airlines Los Angeles LAX – Miami MIA – San Juan, PR SJU
$293.10 Tuesday November 24 – Friday November 27
Flight miles: 6,987 miles LAX-MIA-SJU-CLT-LAX