Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 16:30 and arrives at Makassar Sultan Hasanuddin International Airport at 20:05.
The flighttime is about 2h 35m. The distance travelled ("as the bird flies"): 1434 Km. So the average speed is roughly 555 Km.
There is an 1 hour time difference between Jakarta and Makassar