Flight Achmad Yani International Airport departs from Semarang Achmad Yani International Airport at 09:10 and arrives at Surabaya Juanda International Airport at 10:20.
The flighttime is about 1h 10m. The distance travelled ("as the bird flies"): 267 Km. So the average speed is roughly 229 Km.
The best month to arrive at Semarang is October and the most expensive month to fly is June. (Average prices, based on 24129 datapoints.)
We have a lot more statistics for flights IW 1838 and between Semarang and Surabaya.