Yes. Up until the day of departure, you can modify your ticket by paying the appropriate Delta flight change fee for your fare type. If you request a Delta change flight change because of a medical emergency or the death of a member of your immediate family, the airline might waive the change cost. On the other hand, the Delta change flight request filing process must include the death certificate or medical certificate. If you have a non-refundable ticket and need to change your flight reservation, there will be a fee of between $200 and $500. The charge will vary depending on the destination shown on the reserved ticket and the cost of the new flight as compared to the original.