Flight Juanda International Airport departs from Surabaya Juanda International Airport at 19:55 and arrives at Jakarta Soekarno–Hatta International Airport at 21:35.
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 Friday and it would be best to avoid Sunday, as prices are on average 147.87% higher than on Friday. (Average prices, based on 546063034 datapoints.)
We have a lot more statistics for flights PR 319 and between Surabaya and Jakarta.