Flight Shenzhen Bao'an International Airport departs from Shenzhen Shenzhen Bao'an International Airport at 03:35 and arrives at Singapore Changi Airport at 07:25.
The flighttime is about 3h 50m. The distance travelled ("as the bird flies"): 1318 Km. So the average speed is roughly 344 Km.
The best day to arrive at Shenzhen is Friday and it would be best to avoid Sunday, as prices are on average 26.25% higher than on Friday. (Average prices, based on 50748 datapoints.)
We have a lot more statistics for flights SQ 861 and between Shenzhen and Singapore.