Flight Changi Airport departs from Singapore Changi Airport at 12:00 and arrives at Kuala Lumpur Sultan Abdul Aziz Shah Airport at 13:10.
The flighttime is about 1h 10m. The distance travelled ("as the bird flies"): 275 Km. So the average speed is roughly 236 Km.
The best month to arrive at Singapore is July and the most expensive month to fly is May. (Average prices, based on 282 datapoints.)
We have a lot more statistics for flights TR 8622 and between Singapore and Kuala Lumpur.