Not sure of latest pricing (or current avios availability in J class), but when I booked that same route a few years back, pre-Covid, I was pleasantly surprised to identify an amazingly good cash return fare with Latam in business by using their Chile website. The sector is around five hours so I wasn’t overly keen on going in Y. And the biz cash fare was so favourable that it was far preferable to using avios …… plus of course LA was still a OW member at the time, which meant 280 TP’s and earnt a bunch of avios too.

Have a good trip