Originally Posted by
gorbatzjov
Upgrade priority:
1. IO passengers
2. Platinum passagers (Flex Plus, Flex, Saver, Special)
3. Flex Plus passengers (Gold, Silver)
4. Flex passengers (Gold, Silver)
5. Saver passengers (Gold, Silver)
So it's mainly based on highest priced tickets rather than status to the dismal of many frequent flyers.
Other than that, yes, you are right: Eco > Prem; Prem > Bus; Bus > First.
Are you sure about this? I was upgraded from Economy Flex to First Class twice already this year. The second time, I asked the lounge supervisor who had upgraded me why. He told me I was a grade one gold member. I never knew what that meant, and I still don’t even though I posted about this a few months ago..