However, there are some ticket types on which making a refund is impossible. The basic economy delta ticket is an ideal example of it. You cannot cancel this ticket type. Also, you cannot make any changes to it. The cancellation fees for non-refundable tickets start at $200. Also, this may rely upon the itinerary type. Further, the refund you get after this is just valid for a year. You will have to use it before this time ends.