Flight Changi Airport departs from Singapore Changi Airport at 12:15 and arrives at Kuala Lumpur Kuala Lumpur International Airport at 13:25.
The flighttime is about 1h 10m. The distance travelled ("as the bird flies"): 256 Km. So the average speed is roughly 219 Km.
The best day to arrive at Singapore is Saturday and it would be best to avoid Tuesday, as prices are on average 117.25% higher than on Saturday. (Average prices, based on 81463409 datapoints.)
We have a lot more statistics for flights WY 5694 and between Singapore and Kuala Lumpur.