Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 12:45 and arrives at Malang Abdul Rachman Saleh Airport at 14:20.
The flighttime is about 1h 35m. The distance travelled ("as the bird flies"): 677 Km. So the average speed is roughly 428 Km.
The best month to arrive at Jakarta is November and the most expensive month to fly is December. (Average prices, based on 1951 datapoints.)
We have a lot more statistics for flights IU 6564 and between Jakarta and Malang.