Originally Posted by
MSPeconomist
Maybe the biggest advantage of FULL F or FULL Y would be that during IROPs, one could just purchase a new ticket on AA or any other airline and get the refund for the DL ticket. You're not at the mercy of DL, don't have to wait in line or on hold, etc.
How is that an advantage of full F or Y? If your flight is cancelled or is significantly delayed to the point that you would consider jumping ship to another airline, you can refund the ticket regardless of whether the ticket is flexible or refundable.