Https://www.transfermarkt.com/-service-overview-delta-airlines-cancellation-policy-cancellation-tickets-/thread/forum/696/thread_id/39416/page/1#anchor_39654 ((Service/Overview)) Delta Airlines Cancellation Policy ((Cancellation/Tickets)) https://www.transfermarkt.com/-service-overview-delta-airlines-cancellation-policy-cancellation-tickets-/thread/forum/696/thread_id/39416/page/1#anchor_39654