Flight Changi Airport departs from Singapore Changi Airport at 07:50 and arrives at Surabaya Juanda International Airport at 09:05.
The flighttime is about 2h 15m. The distance travelled ("as the bird flies"): 1022 Km. So the average speed is roughly 454 Km.
There is an 1 hour time difference between Singapore and Surabaya
The best day to arrive at Singapore is Tuesday and it would be best to avoid Wednesday, as prices are on average 55.61% higher than on Tuesday. (Average prices, based on 10234754 datapoints.)
We have a lot more statistics for flights LH 7232 and between Singapore and Surabaya.