Flight Juanda International Airport departs from Surabaya Juanda International Airport at 14:50 and arrives at Jakarta Soekarno–Hatta International Airport at 16:30.
The flighttime is about 1h 40m. The distance travelled ("as the bird flies"): 682 Km. So the average speed is roughly 409 Km.
The best day to arrive at Surabaya is Thursday and it would be best to avoid Saturday, as prices are on average 395.39% higher than on Thursday. (Average prices, based on 546428369 datapoints.)
We have a lot more statistics for flights GA 3254 and between Surabaya and Jakarta.