Flight Kuala Lumpur International Airport departs from Kuala Lumpur Kuala Lumpur International Airport at 11:35 and arrives at Singapore Changi Airport at 12:50.
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 Kuala Lumpur is Sunday and it would be best to avoid Thursday, as prices are on average 413.6% higher than on Sunday. (Average prices, based on 100589007 datapoints.)
We have a lot more statistics for flights SQ 8509 and between Kuala Lumpur and Singapore.
