Originally Posted by
Long Islander
Here's a related question: Suppose we walk up to the AA counter for one of their earlier LHR-NYC flights and they have space in Biz. Would they switch us to that flight for no charge?
Very YMMV. There have been reports of success here, but generally seems to be only if the later flight is oversold or the agent is in a good mood. I wouldn't make plans assuming you'll be able to.