[QUOTE=MSPeconomist;26513210]
However, the courier is still constrained by flight schedules, so calling at 3 am is unlikely to result in faster delivery than calling at 8 am or even noon if there's one daily flight in the right direction departing in the evening.
It is true that the courier is constrained by flight schedules but calling at 8 am won't make it possible to send shipments through flights departing before 8 am like 6 am or 7 am..Besides, I know that it is rare but some courier companies even have air charter service if commercial flights don't offer schedules that I need.