Originally Posted by
azepine00
Can I credit to AS flight on BA if I upgrade it with avios? Basically can I book and confirm upgrade with BA number and then switch it to AS?
I've had no issues getting automatic credit for a paid fare on BA that was later upgraded with Avios. However... if the credit doesn't happen automatically, you may have trouble getting Alaska to issue it manually based on your boarding passes, because the passes will show you in an award fare class.