Originally Posted by
stayinalive
I am trying to better understand upgrade priority list for domestic flights when Y/B/M fares are involved. My understanding is that is goes as the following:
1. Any fare class fare with GS pluspoints. Priority first goes by status and then fare class.
2. Y/B fare class with priority going by status.
3. M fare class with prioirty going by status.
4. All other fare classes with 1k plus points and then status.
5. Status and then fare class
Y/B/M instant upgrade has gone, unfortunately.
https://www.flyertalk.com/forum/united-airlines-mileageplus/1331310-y-b-m-premier-instant-upgrade-how-does-work-ending-21-aug-2025-a.html
GS PPs and GS members without PPs are upgraded with PN spaces.
The rest with/without 1K PPs are upgraded with PZ spaces. PP applied, status and then fare class; No PPs applied (CPU routes), status and then fare class.