If you are asking about coach, it's pretty much the same; some might allocate bulkhead seats, and some airlines provide baby cots or bassinets; AA doesn't any longer, but AA does offer Main Cabin Extra with extra legroom (in all other ways, it's economy, and unless you have Platinum or higher status, there is a cost). IB do not have an MCE-like product.
Good luck and safe travels!
Cross posting across fora is not allowed on FlyerTalk. As this thread has received answers, and the other has not, the other identical one you started a day after this one has been deleted.
As you are inquiring about three one world airlines, AA, BA and IB, we'll move this to the one world forum for broader input.
JDiver, Senior Moderator
Last edited by JDiver; Aug 30, 2015 at 11:13 pm