Flight Changi Airport departs from Singapore Changi Airport at 14:20 and arrives at Surabaya Juanda International Airport at 15:40.
The flighttime is about 2h 20m. The distance travelled ("as the bird flies"): 1022 Km. So the average speed is roughly 438 Km.
There is an 1 hour time difference between Singapore and Surabaya
The best day to arrive at Singapore is Wednesday and it would be best to avoid Saturday, as prices are on average 89.83% higher than on Wednesday. (Average prices, based on 9764186 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 116 datapoints.)
We have a lot more statistics for flights SQ 926 and between Singapore and Surabaya.