Originally Posted by
Wing It One World
Yes it is a done3 I'm not sure if anyone is going to be able to tell me, I'm really not sure BA would even be able to assist

thanks anyway.
BA Tier Pts for AA flight would be based on price in £ for that sector. You can estimate that amount by taking the (
Miles for AA segment /
Miles for entire trip) x
Base Price in £ of DONE3 Ticket.
For the other airlines here's a
link to BA's Avios and tier point flight calculator.