Originally Posted by GadgetFreak

How did you upgrade? Thanks.

Originally Posted by boar

Premium Silvers (Sapphire) receive 6 upgrade coupons a year - flights within South America require 1 coupon, South America to North America/Europe/South Pacific more. Comodoros (Emerald) get unlimited upgrades. These upgrades can only be requested at checkin.

You can also use Lan Pass points/kilometers to upgrade. These upgrades can be processed in advance.