Flight Juanda International Airport departs from Surabaya Juanda International Airport at 05:00 and arrives at Jakarta Soekarno–Hatta International Airport at 06:35.
The flighttime is about 1h 35m. The distance travelled ("as the bird flies"): 682 Km. So the average speed is roughly 431 Km.
The best day to arrive at Surabaya is Sunday and it would be best to avoid Friday, as prices are on average 34.74% higher than on Sunday. (Average prices, based on 546408773 datapoints.)
We have a lot more statistics for flights QG 9173 and between Surabaya and Jakarta.