Hi there, my Frontier Airlines ATL Terminal was okay overall. Terminal is clean and fairly easy to get around. Security passed quicker than I thought it would, and the attendants were friendly for the most part. Frontier's check-in was a breeze using the kiosks, though I would advise getting there early. Seating near the gate can be improved not many options and usually packed. If you're flying light and don't mind a bare-bones flight, it's worth it for the cost. Don't miss packing snacks and entertainment. Budget airlines aren't luxurious, but if you keep expectations in check, Airlines Frontier terminal works just fine.