Originally Posted by
SFflyer123
of course, if you could do this, then people would be selling their seats on e-bay all day long. airlines know that once you bought it, you bought it (unless it's refundable).
This is a great example, and a case where it could otherwise happen would be with a ticket (though not on UAL) that I bought to travel to AUA. Since I've bought the ticket the flight has gone up over $300 r/t. No way the airline wants me making that money.