Flight Guangzhou Baiyun International Airport departs from Guangzhou Guangzhou Baiyun International Airport at 12:45 and arrives at Singapore Changi Airport at 16:50.
The flighttime is about 4h 05m. The distance travelled ("as the bird flies"): 1282 Km. So the average speed is roughly 314 Km.
The best day to arrive at Guangzhou is Friday and it would be best to avoid Monday, as prices are on average 358.1% higher than on Friday. (Average prices, based on 123543 datapoints.)
We have a lot more statistics for flights CZ 3039 and between Guangzhou and Singapore.