Hartsfield-Jackson (ATL) is the world's busiest passenger airport — and Atlanta's only major airport. Direct MARTA rail from inside the terminal to downtown, with Mercedes-Benz Stadium just a transfer away. Most international visitors arrive here.
Hartsfield-Jackson Atlanta International (ATL) is the world's busiest passenger airport — over 100 million passengers per year, Delta's main hub, and the gateway for nearly all Atlanta visitors. The good news: it's transit-connected. The MARTA station is inside the airport (no shuttle needed) with direct rail to downtown.
All concourses connect via the underground Plane Train (free, every 2 min). It's the only way to move between concourses without leaving security. Allow ~20 min between concourses on the Plane Train if making a tight connection.