Originally Posted by bennytma
Thats what I thought. So then does anyone know if CX operated (AA numbered) flights can be upgraded at all? and if so how? Thanks.
Codeshare flights do not have upgrade inventory!
You need to book under the flight number of the operating carrier to upgrade.
With Asia Miles, you can upgrade flights on AA, BA, CX (provided that you book under the original flight number).
With AAdvantage, the only airline you can upgrade on is AA metal flights.