Flight Changi Airport departs from Singapore Changi Airport at 09:50 and arrives at Penang Penang International Airport at 11:20.
The flighttime is about 1h 30m. The distance travelled ("as the bird flies"): 423 Km. So the average speed is roughly 282 Km.
The best day to arrive at Singapore is Tuesday and it would be best to avoid Sunday, as prices are on average 240.35% higher than on Tuesday. (Average prices, based on 2411273 datapoints.)
We have a lot more statistics for flights SQ 134 and between Singapore and Penang.