Flight Changi Airport departs from Singapore Changi Airport at 12:15 and arrives at Kuala Lumpur Kuala Lumpur International Airport at 13:15.
The flighttime is about 1h 00m. The distance travelled ("as the bird flies"): 256 Km. So the average speed is roughly 256 Km.
The best day to arrive at Singapore is Sunday and it would be best to avoid Wednesday, as prices are on average 837.16% higher than on Sunday. (Average prices, based on 80653399 datapoints.)
We have a lot more statistics for flights SQ 5628 and between Singapore and Kuala Lumpur.