Flight Changi Airport departs from Singapore Changi Airport at 18:10 and arrives at Kuala Lumpur Kuala Lumpur International Airport at 19:20.
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 Tuesday and it would be best to avoid Saturday, as prices are on average 21.36% higher than on Tuesday. (Average prices, based on 80847415 datapoints.)
We have a lot more statistics for flights BA 7900 and between Singapore and Kuala Lumpur.