Hi! Delta Airlines ATL Terminal operates wholly from Terminal South (Terminal S) at Hartsfield-Jackson Atlanta International Airport (ATL) mainly for domestic and uses the preponderance of Concourses A, B, C, D. For international purposes, Delta flies from the Maynard H. Jackson Jr. International Terminal known as Terminal I, with Concourses E and F. Due to ongoing construction, security screening times may be longer, and parking could be limited, so it’s best to arrive at least three hours before departure. For detailed airport maps and Delta Sky Club® locations, visit Delta’s official airport guide, or contact Delta’s customer service at ATL at 1-800-123-6645. Safe travels!