Hello there! I recently flew from Frontier Airlines ATL Terminal was. just what you'd want out of a budget airline: functional, but unadorned. Check-in was rapid thanks to the self-service kiosks, though security lines were a little too long. Gate area was filled with sparsely-distributed seating, but otherwise clean. Employees were friendly and courteous to lost travelers. Be sure to bring your own snacks and entertainment since the terminal does not provide much. Despite the lack of amenities, the trip went smoothly and on schedule. At the price I paid, it was worth it. Just don't expect too much and arrive early!