Originally Posted by
Semphyra
It uses Plusgrade, a lot of airlines are using this system. There is a minimum bid and you find out if you get the upgrade 12 hours before the flight via mail. If the J Cabin is too full, you may get the upgrade confirmation at the gate. Sadly you don't get to know how many empty seats there are, neither how many people are in the waitlist and what position you are
LATAM Black (OWE) gets their complementary upgrade first, then biddings, then Platinum and Gold (OWS and OWR) and finally airline employees.
Good luck
im surprised they only let you know 12 hours before, it would be nice to know sooner so as to know if we can bring another checked luggage...