Flight Kuala Lumpur International Airport departs from Kuala Lumpur Kuala Lumpur International Airport at 23:05 and arrives at Singapore Changi Airport at 00:25.
The flighttime is about 1h 20m. The distance travelled ("as the bird flies"): 256 Km. So the average speed is roughly 192 Km.
The best day to arrive at Kuala Lumpur is Sunday and it would be best to avoid Wednesday, as prices are on average 607.14% higher than on Sunday. (Average prices, based on 92741771 datapoints.)
We have a lot more statistics for flights ET 639 and between Kuala Lumpur and Singapore.