The best month to fly between Penang and Singapore is January and the most expensive month to fly is March. (Average prices, based on 807 datapoints.)
The best day to arrive at Penang is Sunday and it would be best to avoid Saturday, as prices are on average 195.94% higher than on Sunday. (Average prices, based on 2170431 datapoints.)
The best time to fly is at around 9. (Average prices, based on 1300 datapoints.)