For new or existing reservations, call Delta Airlines Customer Service at 1-800-221-1212. You can make reservations and buy tickets seven days a week. Medallion members can find their dedicated phone line in the Fly Delta mobile app Contact Us section. SkyMiles members should have their account numbers ready to speed up the call. https://www.travelintellect.com/delta-airlines-booking/https://www.travelintellect.com/procedure-for-dealing-with-delta-airlines-missed-flight/https://www.travelintellect.com/delta-airlines-cancellation-policy/https://www.travelintellect.com/delta-airlines-change-flight-policy/https://www.travelintellect.com/delta-airlines-check-in-web-mobile-airport-and-curbside/https://www.travelintellect.com/delta-airlines-flight-status/https://www.travelintellect.com/delta-airlines-manage-booking/https://www.travelintellect.com/delta-airlines-baggage-policy/