What Terminal is Spirit Airlines at Atlanta At Hartsfield-Jackson Atlanta International Airport (ATL), Spirit Airlines is based out of Terminal N (North). When people ask which terminal Spirit Airlines utilizes at Atlanta airport, they frequently respond that it is Terminal N, which is a component of the Domestic Terminal. Flying out of this airport was a smooth experience for me recently; it’s clean, well-organized, and has a decent selection of dining and shopping options. The personnel was welcoming and helpful, and the check-in procedure was quick. Knowing that Spirit operates out of Terminal N in Atlanta will make your journey much more convenient.