Flight Supadio International Airport departs from Pontianak Supadio International Airport at 11:35 and arrives at Surabaya Juanda International Airport at 13:15.
The flighttime is about 1h 40m. The distance travelled ("as the bird flies"): 473 Km. So the average speed is roughly 284 Km.
The best month to arrive at Pontianak is September and the most expensive month to fly is December. (Average prices, based on 8550 datapoints.)
We have a lot more statistics for flights IW 839 and between Pontianak and Surabaya.