Flight Changi Airport departs from Singapore Changi Airport at 15:55 and arrives at Hong Kong Hong Kong International Airport at 19:55.
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 Monday and it would be best to avoid Saturday, as prices are on average 158.01% higher than on Monday. (Average prices, based on 2263708 datapoints.)
We have a lot more statistics for flights TR 972 and between Singapore and Hong Kong.