Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 10:40 and arrives at Manado Sam Ratulangi International Airport at 15:05.
The flighttime is about 3h 25m. The distance travelled ("as the bird flies"): 2061 Km. So the average speed is roughly 603 Km.
There is an 1 hour time difference between Jakarta and Manado