Flight Juanda International Airport departs from Surabaya Juanda International Airport at 07:05 and arrives at Singapore Changi Airport at 10:25.
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 Surabaya and Singapore
The best day to arrive at Surabaya is Friday and it would be best to avoid Sunday, as prices are on average 21.44% higher than on Friday. (Average prices, based on 22292295 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 1112 datapoints.)
We have a lot more statistics for flights GA 854 and between Surabaya and Singapore.