Originally Posted by
KARFA
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!
When searching for upgrade availability to UUA a 125 ticket in this situation I’ve been doing a ‘standard Avios search’ on BA.com. Is this the right place to check availability?