Flight Penang International Airport departs from Penang Penang International Airport at 12:00 and arrives at Singapore Changi Airport at 13:40.
The flighttime is about 1h 40m. The distance travelled ("as the bird flies"): 423 Km. So the average speed is roughly 254 Km.
The best day to arrive at Penang is Tuesday and it would be best to avoid Saturday, as prices are on average 282.5% higher than on Tuesday. (Average prices, based on 2173976 datapoints.)
We have a lot more statistics for flights SQ 133 and between Penang and Singapore.