Flight Guangzhou Baiyun International Airport departs from Guangzhou Guangzhou Baiyun International Airport at 22:35 and arrives at Singapore Changi Airport at 02:50.
The flighttime is about 4h 15m. The distance travelled ("as the bird flies"): 1282 Km. So the average speed is roughly 302 Km.
The best day to arrive at Guangzhou is Wednesday and it would be best to avoid Tuesday, as prices are on average 136.31% higher than on Wednesday. (Average prices, based on 152731 datapoints.)
We have a lot more statistics for flights CZ 8489 and between Guangzhou and Singapore.