Frontier Airlines operates at Hartsfield-Jackson Atlanta International Airport's Terminal North (Domestic Terminal). Frontier passengers can check-in, use ticketing services, and go through security at the North Terminal, which is designed particularly for domestic flights. The North Terminal includes convenient amenities such as food, shops, and seating places near the Frontier gates, ensuring that customers have a positive experience. For those wondering, "What terminal is Frontier Airlines at ATL?" the answer is the North Terminal, making it easy for travelers to get there and enjoy their journey with Frontier from Atlanta.