Originally Posted by
Vasco Pridat
If I understand this right, there is no chance to use AVIOS to upgrade a non BA metal flight... you can get the full ticket with AVIOS if available.. but you cannot upgrade a BA ticket operated by AA
Just to clarify this, you can only UuA where you have a BA 125-... ticket. If you have an AA flight on the booking you can UuA it but only if the AA flight is in the following selling classes J, C, D, W, Y - which is obviously quite restrictive!