Flight Achmad Yani International Airport departs from Semarang Achmad Yani International Airport at 08:30 and arrives at Pontianak Supadio International Airport at 10:00.
The flighttime is about 1h 30m. The distance travelled ("as the bird flies"): 280 Km. So the average speed is roughly 187 Km.
The best day to arrive at Semarang is Friday and it would be best to avoid Monday, as prices are on average 15% higher than on Friday. (Average prices, based on 1125835 datapoints.)
We have a lot more statistics for flights IU 398 and between Semarang and Pontianak.
