Flying from one point to another is just a straight line only periodically. If there is more than one aircraft aircraft. Use the path to get to the point.
Flying from one point to another point there is only one straight line as close as possible. If there is more than one aircraft to aircraft. The route to travel to destinations.
The flight from one point to another point, only the straight line only is as close as possible If there is more than one aircraft The route to travel to various points