Originally Posted by
NOLAnwGOLD
I think if it's AF/KL ticketed, it has to be the higher classes YBM equivalent to use the upgrade certificates. Maybe there's a work around but I've learned best to do DL ticketed everything if you want to use the RUC/GUCs.
In this case I'm flying premium economy on the other legs and it's ticketed into for-real W on Delta. I think I'll actually activate my Platinum choice benefits and see what I can make happen and report back. Thanks all!