Flight Changi Airport departs from Singapore Changi Airport at 16:35 and arrives at Kuala Lumpur Kuala Lumpur International Airport at 17:50.
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 Saturday, as prices are on average 72.56% higher than on Sunday. (Average prices, based on 80748495 datapoints.)
We have a lot more statistics for flights FY 7334 and between Singapore and Kuala Lumpur.