Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 17:30 and arrives at Pekanbaru Sultan Syarif Kasim II International Airport at 19:20.
The flighttime is about 1h 50m. The distance travelled ("as the bird flies"): 605 Km. So the average speed is roughly 330 Km.
The best day to arrive at Jakarta is Friday and it would be best to avoid Tuesday, as prices are on average 57.52% higher than on Friday. (Average prices, based on 135068460 datapoints.)
We have a lot more statistics for flights IU 3864 and between Jakarta and Pekanbaru.