Flight Kualanamu International Airport departs from Medan Kualanamu International Airport at 20:10 and arrives at Jakarta Soekarno–Hatta International Airport at 22:35.
The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 895 Km. So the average speed is roughly 370 Km.
The best month to arrive at Medan is November and the most expensive month to fly is June. (Average prices, based on 9076 datapoints.)
We have a lot more statistics for flights SV 1854 and between Medan and Jakarta.
IDR