Flight Shenzhen Bao'an International Airport departs from Shenzhen Shenzhen Bao'an International Airport at 02:50 and arrives at Singapore Changi Airport at 06:50.
The flighttime is about 4h 00m. The distance travelled ("as the bird flies"): 1318 Km. So the average speed is roughly 330 Km.
The best day to arrive at Shenzhen is Thursday and it would be best to avoid Sunday, as prices are on average 45.96% higher than on Thursday. (Average prices, based on 52344 datapoints.)
We have a lot more statistics for flights SQ 857 and between Shenzhen and Singapore.