Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 04:00 and arrives at Medan Kualanamu International Airport at 06:20.
The flighttime is about 2h 20m. The distance travelled ("as the bird flies"): 895 Km. So the average speed is roughly 384 Km.
The best day to arrive at Jakarta is Saturday and it would be best to avoid Monday, as prices are on average 21.88% higher than on Saturday. (Average prices, based on 752920741 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 197 datapoints.)
We have a lot more statistics for flights JT 6713 and between Jakarta and Medan.