Do airlines have to include a departure window when they file their flight plan, or communicate it otherwise?
As many people know, airlines operate on schedules, but I think we all have seen delayed flights, sometimes for 10 mins, sometimes for a couple of hours. However, that is the airline and the customer's problem. Do ATC or the Management at the airport have a departure window though, so if the plane does not depart in between these times; and it is not the airport's fault, they will not let the plane depart, or fine them?