Frontier Airlines operates out of Terminal S (South Terminal) at Hartsfield-Jackson Atlanta International Airport (ATL). The terminal is a hub for low-cost carriers and provides efficient services for passengers flying with Frontier. While smaller compared to other terminals, it is equipped with essential amenities such as check-in counters, security checkpoints, and gate access for Frontier's flights. https://airlineairportsterminal.com/frontier-airlines/frontier-airlines-atl-terminal-hartsfield-jackson-atlanta-international-airport/