Flight Changi Airport departs from Singapore Changi Airport at 17:15 and arrives at Hong Kong Hong Kong International Airport at 21:15.
The flighttime is about 4h 00m. The distance travelled ("as the bird flies"): 1322 Km. So the average speed is roughly 330 Km.
The best day to arrive at Singapore is Tuesday and it would be best to avoid Saturday, as prices are on average 463.35% higher than on Tuesday. (Average prices, based on 3253092 datapoints.)
We have a lot more statistics for flights TR 976 and between Singapore and Hong Kong.
