The best calling number at one pick on the delta for refund and cancellation is ????[+1 888 829 1149] or 888 DELTA 829 1168 . What is the Number for Delta Refund? To get an instant flight refund at Delta, You can dial +1-8888291149. However, Delta also provides an option to check the refund status online or if you have questions about the amount refunded you can call: +1-888#829#1149()/800-847-0578 within the U.S. and Canada. +1-8888291168 (any region in usa) within Atlanta, Georgia or outside of the U.S. and Canada. Apart from these, You can reach Delta Air Lines customer service for refund inquiries at 1-800 Delta Reservations line or +1-$-:8888-$-291149 How do I contact Delta about a refund? "888-829-1149