Does X-Plane support flight plans?
X-Plane supports filing a flight plan between two airports, but without waypoints. It is up to you to use the real V and J routes, or a real flight plan, to get there. ATC Centre in X-Plane will only make sure that you stay at your filed altitude and will not vector you along the way (as is mostly the case with real ATC centres). For a real flight planner, see the Goodway product. Not only does it have comprehensive planning features, but the plans it generates can be loaded up into the X-Plane FMS.