Flight Changi Airport departs from Singapore Changi Airport at 12:40 and arrives at Penang Penang International Airport at 14:15.
The flighttime is about 1h 35m. The distance travelled ("as the bird flies"): 423 Km. So the average speed is roughly 267 Km.
The best day to arrive at Singapore is Tuesday and it would be best to avoid Sunday, as prices are on average 337.44% higher than on Tuesday. (Average prices, based on 2006963 datapoints.)
We have a lot more statistics for flights FY 3663 and between Singapore and Penang.