Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 23:35 and arrives at Tokyo Haneda Airport at 08:50.
The flighttime is about 7h 15m. The distance travelled ("as the bird flies"): 4285 Km. So the average speed is roughly 591 Km.
There is an 2 hour time difference between Jakarta and Tokyo