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 Sunday and it would be best to avoid Wednesday, as prices are on average 348.84% higher than on Sunday. (Average prices, based on 2057531 datapoints.)
We have a lot more statistics for flights VA 5777 and between Hong Kong and Singapore.