Flight Changi Airport departs from Singapore Changi Airport at 07:40 and arrives at Surabaya Juanda International Airport at 09:05.
The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 1022 Km. So the average speed is roughly 423 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 34.35% higher than on Wednesday. (Average prices, based on 9803771 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 692 datapoints.)
We have a lot more statistics for flights TR 264 and between Singapore and Surabaya.