What Terminal is Spirit Airlines At ATL? Spirit Airlines operates out of the Domestic Terminal at Hartsfield-Jackson Atlanta International Airport (ATL). Specifically, Spirit Airlines uses Concourse D within the Domestic Terminal for its flights. Passengers flying with Spirit Airlines can check in at the North Terminal, proceed through security, and then head to Concourse D, where they will find their departure gates. The terminal offers various amenities, including dining options, shops, and comfortable seating areas, ensuring a smooth and convenient travel experience for all Spirit Airlines passengers at ATL.