Originally Posted by
matt85
Maybe I was unclear, sorry about that. It's an AA marketed itinerary and it includes one leg operated by BA. For that one, I cannot select seats on AA, and on BA I can find the ticket but it tells me I can either wait until check-in or call any pay to book in advance. Despite the ticket being Main Cabin which should include standard seats selection, at least on AA it does.
Unless you have oneworld elite status, Economy, Premium Economy, and even Business Class on flights operated by BA have a charge for advance seat selection. (First Class on BA gets free advance seat selection.)