text: Routes are outlined before departure time to select the shortest and most efficient route?
classes:  No, for the best flight efficiency and time savings, the route is planned before the departure time.  Besides, for the best flight efficiency and time savings, the route is planned before the departure time.  Yes, for the best flight efficiency and time savings, the route is planned before the departure time.  Meanwhile, for the best flight efficiency and time savings, the route is planned before the departure time.