Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 19:00 and arrives at Pekanbaru Sultan Syarif Kasim II International Airport at 20:45.
The flighttime is about 1h 45m. The distance travelled ("as the bird flies"): 605 Km. So the average speed is roughly 346 Km.
The best day to arrive at Jakarta is Saturday and it would be best to avoid Monday, as prices are on average 7.39% higher than on Saturday. (Average prices, based on 134223958 datapoints.)
We have a lot more statistics for flights QG 9934 and between Jakarta and Pekanbaru.