Atlanta Hartsfield International Airport 3D model is available on CGTrader for $150. Original author: BOXX3D.
SKP (Sketchup, filesize: 168 MB), OBJ (OBJ, filesize: 79.1 MB), FBX (Autodesk FBX, filesize: 80.3 MB), DAE (Collada, filesize: 247 MB), DWG (AutoCAD, filesize: 172 MB), LS8 (Lumion, filesize: 165 MB), STL (Stereolithography, filesize: 1.4 MB)