my question about upgrade with miles (not about cash)
If I buy ticket DUS-LAX SFO-DUS in economy for money, in travel agency.
Сan I upgrade(with miles) in this case:
now i can see - award only in ECO, no in BUS, it means - no available upgrade with miles before, possible to upgrade in airport before flight plus additional 12,5K miles(37,5 for one segment)?
1000 excuse me for stupid question