Originally Posted by ahchiu

I know that one of the strategies in booking Cathay using AA miles is to first book J, and then to look for F to open up in the days approaching, and upgrade with a few more AA miles.

Can the same strategy apply to booking Cathay using Avios? Book J, and if F opens up in the days leading up to departure, pay with Avios to upgrade?

Yeah, I know, who would use Avios to book CX F? I am trying to also bring along an infant, and BA seems to have one of the more infant-friendly policies.