Flight Changi Airport departs from Singapore Changi Airport at 11:50 and arrives at Pekanbaru Sultan Syarif Kasim II International Airport at 11:50.
The flighttime is about 1h 00m. The distance travelled ("as the bird flies"): 283 Km. So the average speed is roughly 283 Km.
There is an 1 hour time difference between Singapore and Pekanbaru