I booked a non-refundable ticket in May 2012 SCL-ORD-SCL via DFW, but wasn't able to use it since a work trip came up at the same time. AA gave me a non-transferable credit for the amount and one year to use it, same point of origin, etc., as per norm. I verified my options with multiple AAgents, and never once was a refund an option - they each confirmed that it was a non-refundable fare. Just booked the same routing for less money, so the change fee was paid for out of the credit, and I was told that I would be sent a check for the remaining unused balance (around US$250). This took me by surprise - does anyone have a similar experience? I was fully anticipating losing the $ that remained after booking the new ticket.