Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 05:10 and arrives at Berau Kalimarau Airport at 08:45.
The flighttime is about 2h 35m. The distance travelled ("as the bird flies"): 1274 Km. So the average speed is roughly 493 Km.
There is an 1 hour time difference between Jakarta and Berau