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 month to arrive at Singapore is October and the most expensive month to fly is April. (Average prices, based on 909 datapoints.)
We have a lot more statistics for flights NH 5494 and between Singapore and Surabaya.
