At any airport, the "Airline" [sched or charter] HAS to submit its "schedules" for runway slot reqs quite a way in advance.
Yea I'm saying a openly, publicly available timetable, I'm well aware the airlines have to submit their "schedules" well in advance to the respective airport. Charter airlines tend to "play" around with flight times etc even quite close to departure, I dont believe scheduled airlines do (to such a large extent anyway).
I'm just going by what I have been taught the difference is.