One of the busiest airports in the world, Hartsfield-Jackson Atlanta International Airport (ATL), is home to Frontier Airlines' terminal, N (North). With the aid of this guide, you can efficiently navigate the terminal and optimize your Frontier Airlines travel experience. Travelers can choose from a number of easy check-in options with Frontier Airlines. 24 hours before to your trip, you can check in online to select your seat, pay for your luggage, and print your boarding card. Terminal N has both manned check-in counters and self-service kiosks for passengers who would rather check in at the airport. It is advised to be at the airport two hours or more prior to your scheduled flight in order to guarantee a seamless check-in and security screening procedure. Visit: Frontier Airlines Atlanta terminal