Flight Penang International Airport departs from Penang Penang International Airport at 21:25 and arrives at Singapore Changi Airport at 23:00.
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 Penang is Tuesday and it would be best to avoid Saturday, as prices are on average 214.09% higher than on Tuesday. (Average prices, based on 2195928 datapoints.)
We have a lot more statistics for flights JQ 678 and between Penang and Singapore.