Originally Posted by
viajero1
If I use Alaska Air miles for an AA flight from the US to LONDON will I be assigned to MAIN CABIN? And if so, when / how can I make my seat choice? Thanks.
You can book awards in any class of service. Obviously the higher ones are more miles. You should be able to select a seat through the AA app or website using the AA record locator (not the AS one; they will give you both)