Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 06:30 and arrives at Semarang Achmad Yani International Airport at 07:40.
The flighttime is about 1h 10m. The distance travelled ("as the bird flies"): 415 Km. So the average speed is roughly 356 Km.
THB
