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 February and the most expensive month to fly is January. (Average prices, based on 4763 datapoints.)
The best day to arrive at Kuala Lumpur is Wednesday and it would be best to avoid Friday, as prices are on average 68.45% higher than on Wednesday. (Average prices, based on 2235 datapoints.)
The cheapest airline flying from Kuala Lumpur to Penang is Malindo Air. They are 60% cheaper than MasWings. (Average prices, based on 4794 datapoints.)
The best time to fly is at around 22. (Average prices, based on 8566 datapoints.)