To obtain a full refund from Delta Airlines, passengers can cancel their booking by phone at +1-888-559-4669 within the allowed timeframe and meet the eligibility criteria outlined in Delta Airlines\’ refund policy. Any unused airfare can be converted into eCredit, which can be used for future flights. Passengers can make changes to their flights without paying the $200 cancellation fee.
Source: https://experience.dynamics.com/ideas/idea/?ideaid=971e2927-2e38-ef11-a295-6045bd84c2f2
