Flight Juanda International Airport departs from Surabaya Juanda International Airport at 12:30 and arrives at Kuala Lumpur Kuala Lumpur International Airport at 16:10.
The flighttime is about 2h 40m. The distance travelled ("as the bird flies"): 1271 Km. So the average speed is roughly 477 Km.
There is an 1 hour time difference between Surabaya and Kuala Lumpur