Sukhoi SU27 Flanker Low-poly 3D model is available on CGTrader for $80. Original author: lowpolygonmodels. Specs: 540 polys, 1620 verts.
OBJ (OBJ, filesize: 23.6 KB), DAE (Collada, filesize: 20.5 KB), OTHER (Other, filesize: 3.32 MB), FBX (Autodesk FBX, filesize: 827 KB), 3DS (3D Studio, filesize: 886 KB), MAX (Autodesk 3ds Max, filesize: 886 KB)