Flight Changi Airport departs from Singapore Changi Airport at 18:55 and arrives at Hong Kong Hong Kong International Airport at 22:45.
The flighttime is about 3h 50m. The distance travelled ("as the bird flies"): 1322 Km. So the average speed is roughly 345 Km.
The best day to arrive at Singapore is Tuesday and it would be best to avoid Saturday, as prices are on average 111.27% higher than on Tuesday. (Average prices, based on 3251169 datapoints.)
We have a lot more statistics for flights SQ 898 and between Singapore and Hong Kong.
