Originally Posted by
Natush
LH says they cannot see info on alliance upgrade, and because it's a ticket purchased on United and I want to use United miles, they have nothing to do with it.
United said they see there is space.
Does your flight number start with LH or UA? It must be LH or you won’t be able to apply an upgrade. If it’s UA, you’ll have to see if they can change it to the corresponding LH flight number first.