I think available is totally sparse on the Air France metal LAX-PPT. Almost nothing in economy with only 1 or 2 days with 2 economy seats available as of earlier this year when I was travelling through there.
Air Tahiti Nui has much better availability. This is of no consolation to those trying to use Alaska Miles on AF metal but they seem to be few and far between EVERYWHERE; not just on this route. . .