Originally Posted by
kerfluffer
Hey folks, I'm trying to upgrade a Premium Economy Class/L ticket to Business. But there is no option for upgrading from Premium Economy to Business, and the website complains that the fare class is not valid when using Economy as the class option. Anyone know how to do this?
Star Alliance Upgrade Awards (SAUA) cannot be applied on Premium Economy L Fare. SAUA on EVA is only available from Economy Y, B fares and Premium Economy K fare.