Flight Achmad Yani International Airport departs from Semarang Achmad Yani International Airport at 07:05 and arrives at Jakarta Soekarno–Hatta International Airport at 08:20.
The flighttime is about 1h 15m. The distance travelled ("as the bird flies"): 415 Km. So the average speed is roughly 332 Km.
The best day to arrive at Semarang is Thursday and it would be best to avoid Sunday, as prices are on average 34.2% higher than on Thursday. (Average prices, based on 103038475 datapoints.)
We have a lot more statistics for flights MH 4037 and between Semarang and Jakarta.