I had to cancel a non-refundable ticket on American earlier this year and the credit ($180) will expire Dec 19. I won't be able to use it by then, but I also don't want to lose it. I was thinking of booking the cheapest refundable ticket I can find (so far it's around $500) using the credit towards it, then canceling it a few days later. My question is, would AA refund the entire amount of $500 or deduct the credit and only give me back the $300? Has anyone ever tried this?