Tourney: WHBPC 2013 - Weston, Florida 2013/10/16-20

The consensus seems to be that if you book/check-in with BA then there's no problem (this isn't the policy as-written though as BA state they won't be held accountable if partner airlines add extra fees for your luggage).

You're not going to interact with any AA staff till you're on the plane and by then it seems a little late to ask for the bike fee?

I guess it's possible that BA could ask for the bike fee on behalf of AA, but that doesn't seem to be happening at the moment.

If you are flying AA, out of Heathrow, you'll be in a different terminal, and have to use AA staff. So they might charge you. But, I've flown AA, under a BA ticket a number of times, and never had to pay, just say you've got a BA flight, and they don't charge. The only thing they've ever said to me is that it has to be under 50LB (23kg).

Are you flying direct? If you change, you'll need to pick up your bag, and if you then go onto an AA connecting flight, they might try to charge you there.