Originally Posted by jasonvr

Had a relatively pleasant experience using UA miles to go from J to F on LH for a flight in 2 days. Was booked in J (D class fare) XXX-FRA-LAX. XXX-FRA is a 2 class EuroJ flight. Both segments booked as UA codeshare on 016 ticket stock. Called in and agent understood about switching to the native LH flight number, but it requires the same booking code to be available which she wasn't seeing. She got a supervisor involved (with no prompting) and supervisor reached out to LH and they agreed to switch me onto the LH flight number. I just had to stay out of the PNR for a while and I got an email confirming the change. Then submitted the request and was pleasantly surprised when it cleared immediately and only cost 25k miles! Looking at the old chart it was showing 40k miles to go from J to F.

I was actually so confused I thought it was messed up so I backed out the first time, tried selecting my current class as Economy just to see and got an error that the class didn't match the ticketed class. So then I tried again selecting Biz as current cabin and got an error that no upgrade was available! But I figured my previous request had just locked it for a bit, so I waited about 15 minutes, did it again, saw the 25k and never looked back. Got an email confirmation shortly after and selected the last free seat in the 748 F cabin. Now I just have to decide on the FCL or FCT