Flight Hong Kong International Airport departs from Hong Kong Hong Kong International Airport at 08:00 and arrives at Singapore Changi Airport at 11:45.
The flighttime is about 3h 45m. The distance travelled ("as the bird flies"): 1322 Km. So the average speed is roughly 353 Km.
The best day to arrive at Hong Kong is Thursday and it would be best to avoid Sunday, as prices are on average 103.66% higher than on Thursday. (Average prices, based on 2064068 datapoints.)
We have a lot more statistics for flights SQ 897 and between Hong Kong and Singapore.