Flight Changi Airport departs from Singapore Changi Airport at 17:35 and arrives at Chongqing Chongqing Jiangbei International Airport at 22:45.
The flighttime is about 6h 10m. The distance travelled ("as the bird flies"): 873 Km. So the average speed is roughly 142 Km.
There is an 1 hour time difference between Singapore and Chongqing