Frontier Airlines operates out of the T Concourse at Hartsfield-Jackson Atlanta International Airport (ATL). This terminal is designed to provide convenient access for travelers flying with Frontier. Located near the main terminal, the T Concourse offers various amenities, including dining options, shops, and comfortable seating areas. Frontier Airlines focuses on providing affordable travel options, and its ATL terminal is equipped to handle both domestic and some international flights, ensuring a smooth and efficient experience for passengers.