Frontier Airlines Hartsfield Jackson Atlanta Airport Terminal. This terminal, which offers a variety of services to enhance your journey, is exclusively utilized for domestic flights. In addition to a number of shops offering products you might need for last-minute travel, there are various dining options, ranging from sit-down dinners to quick nibbles. The terminal is well-equipped with comfortable seating areas, charging stations, and free Wi-Fi. Frontier Airlines' gate areas and check-in counters are well marked, making them easy to find. Either arriving or departing, Terminal N is a simple and efficient place to travel.