Flying BOS to KBP and I would like to use AA miles (if at all possible) to upgrade flight. I don't think AA miles can be used on BA going to LON however if LON is a stop over and final destination is the Ukraine, is it possible?

Also if flying on BA on this route can I earn AA miles or BA miles only?


Any help or suggestions would be appreciated - thanks

I will cross post in OneWorld forum - hope that's okay

Rachel
AA Gold (formerly platinum and hoping)