Flight Juanda International Airport departs from Surabaya Juanda International Airport at 17:30 and arrives at Jakarta Soekarno–Hatta International Airport at 19:00.
The flighttime is about 1h 30m. The distance travelled ("as the bird flies"): 682 Km. So the average speed is roughly 455 Km.
The best day to arrive at Surabaya is Tuesday and it would be best to avoid Friday, as prices are on average 25.76% higher than on Tuesday. (Average prices, based on 542918092 datapoints.)
We have a lot more statistics for flights QG 179 and between Surabaya and Jakarta.