Originally Posted by
MSPeconomist
On many D1 Tickets, you won't receive a full refund, just a credit for the fare minus the change fee, which is probably about $400.
I would underscore this point and add that this is true for
most Delta One tickets. I think (though I'm not sure) that many years ago it was true that most (all?) premium cabin tickets were also refundable tickets, but that has not been true for a long time. Unless you went out of your way to purchcase a refundable Delta One ticket (which would likely be extremely expensive), then your ticket is likely not refundable.