Originally Posted by
mustermanmuc
In the past I've been able to obtain business/first class flights FRA-SFO using aeroplan miles (with the online tool at aeroplan.ca) -- either with UA or LH.
Probably not in the recent past, unless you've booked very close to departure.
This is a tough award in a premium cabin. Check inventory daily and you
might find something, particularly within the two weeks prior to departure. Connecting through YVR, SEA, or DEN your odds of finding availability on LH are quite a bit higher.