Flight Kuala Lumpur International Airport departs from Kuala Lumpur Kuala Lumpur International Airport at 21:45 and arrives at Bangkok Suvarnabhumi Airport at 23:05.
The flighttime is about 2h 20m. The distance travelled ("as the bird flies"): 259 Km. So the average speed is roughly 111 Km.
There is an 1 hour time difference between Kuala Lumpur and Bangkok