Boeing 777-300 MP United Airlines (Polygon mesh 3D model) is available on CGTrader for $89. Original author: Dreamscape. Specs: 37468 polys, 19642 verts.
STL (Stereolithography, filesize: 594 KB), OBJ (OBJ, filesize: 1.22 MB), OTHER (Other, filesize: 991 KB), DAE (Collada, filesize: 473 KB), DWG (AutoCAD, filesize: 554 KB), DXF (DXF, filesize: 580 KB), TEXTURES (Textures, filesize: 907 KB), LWO (Lightwave, filesize: 244 KB), MAX (Autodesk 3ds Max, filesize: 232 KB)