Flight Kualanamu International Airport departs from Medan Kualanamu International Airport at 21:10 and arrives at Jakarta Halim Perdanakusuma International Airport at 23:40.
The flighttime is about 2h 30m. The distance travelled ("as the bird flies"): 922 Km. So the average speed is roughly 369 Km.
The best day to arrive at Medan is Monday and it would be best to avoid Friday, as prices are on average 7.7% higher than on Monday. (Average prices, based on 317990513 datapoints.)
We have a lot more statistics for flights GA 1894 and between Medan and Jakarta.
