For most tickets, Delta cancellation policy 1 (844) 643-3377 rule allows you to cancel at least 7 days before departure or within 24 hours of booking without any penalty, as long as the flight is scheduled at least 7 days in advance. This means you can get a full refund if you cancel within this time frame. https://tabellaesupport.microsoftcrmportals.com/forums/general-discussion/a2631de1-1cc9-ef11-a81b-0022489f0209