Originally Posted by CApreppie
This is what I've gathered from reading UA threads on upgrade waitlists:
PA list: SWU, CR1 (all passengers); Miles (UGS, 1K)
PB list: Miles (1P, 2P, no status); 500 milers (all passengers)
I'm not sure how they sort the PA and PB lists.
Almost right. I am a 1K and have been told numerous times if I use miles I will be on the PB list. Don't know about UGS but I suspect the same thing.