Copa Airlines ATL Terminal At Hartsfield Jackson Atlanta International Airport (ATL), Copa Airlines is based out of Terminal I, also known as the International Terminal. Travelers wishing to check in, go through security, and board should head to Concourse F. This airport serves foreign travelers with a range of amenities, such as dining options, retail stores, and cozy lounges. To ensure you have enough time for all the processes, it is advised that you arrive at least three hours prior to your flight. If necessary, accessing other concourses is made simple by Terminal I's efficient Plane Train connection to the remainder of the airport.