What to know
Use the boarding-pass gate as the final authority because ATL can reassign gates across its connected concourses.
Airport layout
ATL has Domestic North and South check-in halls plus an International Terminal. All seven concourses are connected after security by the Plane Train.
Getting to the gate
Use the terminal for check-in and bag drop, but use the concourse and gate on your boarding pass for the final walk.
Connections
You do not need to leave security to move among Concourses T and A through F; the Plane Train links all of them.
