Originally Posted by
pitbulllover
Yes to both questions. Just need a K-fare or higher for domestic or M-fare or higher international.
Just beware that just because you buy that fare, doesn't mean the upgrade is guaranteed. Check expertflyer.com first to see if the inventories are available at the time of booking.
Enjoy!
As a followup, there must be G or Z fare inventory available to get the upgrade. If Expertflyer (or now several other websites) shows G0 or Z0, the best that will happen is that you will get put on a waitlist for a miles upgrade and a separate, independent waitlist for a medallion upgrade.
So in other words, you need to find a flight that is in K, Q, H, M, or B classes domestically, or M, B, or Y classes internationally, and there must be G or Z fare inventory for the particular flight. Technically the same applies to full Y domestically as well, but most likely the instant medallion upgrade would likely take precedence (assuming that there is V or X inventory).
Confused yet?