Flight Juanda International Airport departs from Surabaya Juanda International Airport at 18:40 and arrives at Jakarta Soekarno–Hatta International Airport at 20:15.
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 month to arrive at Surabaya is March and the most expensive month to fly is July. (Average prices, based on 5866 datapoints.)
We have a lot more statistics for flights SV 6154 and between Surabaya and Jakarta.