Originally Posted by
JDiver
It's simple: can't be done.
Yes
You can also just change your ticket to paid business.
But you cannot use your AA miles to upgrade non-AA metal flights (unless its BA). Hell right now you cant even use your AA miles to upgrade US Airways flights, and its all "one airline" lol.
If you really want business, just ask the agents at check-in how much it would cost to move up to business.