Flight Achmad Yani International Airport departs from Semarang Achmad Yani International Airport at 11:40 and arrives at Jakarta Soekarno–Hatta International Airport at 12:50.
The flighttime is about 1h 10m. The distance travelled ("as the bird flies"): 415 Km. So the average speed is roughly 356 Km.
The best month to arrive at Semarang is February and the most expensive month to fly is April. (Average prices, based on 390 datapoints.)
We have a lot more statistics for flights IU 6351 and between Semarang and Jakarta.