Originally Posted by
StuckinITH
Yes (since you are based in Europe, I'm guessing that you are looking for international flights), if your Economy fare is W or above. When you buy your ticket, if you see R>0, if you buy a ticket with the appropriate fare and apply a GPU, you'll be upgraded immediately. If you see R=0, when you apply a GPU you'll be added to the upgrade waitlist which may clear at any time before the flight or not clear at all.
Are you sure you are only UA Silver? If you are only Silver, you don't have GPUs but maybe you have a friend that can use his GPUs for you.
Thanks! I'm currently Silver but will achieve 1K status later this year. I'm planning to use my GPU's for transatlantic flights and was wondering if I can use them for Polaris😀. Hopefully Polaris will be on a flight to AMS soon.