Please be aware that Kuala Lumpur has multiple airports and that these results are for all airports serving the city.
The best month to fly between Kuala Lumpur and Penang is October and the most expensive month to fly is September. (Average prices, based on 87634 datapoints.)
The best day to arrive at Kuala Lumpur is Wednesday and it would be best to avoid Friday, as prices are on average 43.77% higher than on Wednesday. (Average prices, based on 44582 datapoints.)
The cheapest airline flying from Kuala Lumpur to Penang is Malindo Air. They are 60% cheaper than MasWings. (Average prices, based on 87666 datapoints.)
The best time to fly is at around 14. (Average prices, based on 107662 datapoints.)