Apologies if there is an existing thread on this topic, not sure how to find it. If there is, please point me in that direction.


I'm planning my travel for 2009 and would like to use other *A airlines like LH, SQ, ANA. If I buy an economy class ticket on these airlines, how I do use my MP miles to upgrade to C? Can that be done at the gate? Or is there some sort of thing I need to arrange before travel?

Thanks