Cheapest LH fare class for PP upgrade?
I booked a codeshare flight (UA marketed, LH operated) in Q class. I called to have it switched to a true LH number so I can request upgrade with PP, and the rep said I needed to pay a few hundred dollars for the lowest upgradable LH fare class. I believe some of the UA fare classes might not match up to LH ones... does anyone have fare class equivalents so I can get this right?