$150 Central Illinois Regional Airport at Bloomington-Normal 3D model by BOXX3D. Available on CGTrader. Geometry: Polygon mesh. Check it out on CGHub.
SKP (Sketchup, filesize: 599 MB), OBJ (OBJ, filesize: 165 MB), FBX (Autodesk FBX, filesize: 266 MB), DAE (Collada, filesize: 575 MB), DWG (AutoCAD, filesize: 229 MB), LS8 (Lumion, filesize: 451 MB), SKP (Sketchup, filesize: 599 MB), STL (Stereolithography, filesize: 49.7 MB)