Flight Changi Airport departs from Singapore Changi Airport at 20:30 and arrives at Kuala Lumpur Kuala Lumpur International Airport at 21:45.
The flighttime is about 1h 15m. The distance travelled ("as the bird flies"): 256 Km. So the average speed is roughly 205 Km.
The best day to arrive at Singapore is Sunday and it would be best to avoid Friday, as prices are on average 151.96% higher than on Sunday. (Average prices, based on 95372440 datapoints.)
We have a lot more statistics for flights SQ 8510 and between Singapore and Kuala Lumpur.
