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 Alor Setar is October and the most expensive month to fly is May. (Average prices, based on 594 datapoints.)
The best day to arrive at Kuala Lumpur is Thursday and it would be best to avoid Monday, as prices are on average 162.49% higher than on Thursday. (Average prices, based on 653 datapoints.)
The cheapest airline flying from Kuala Lumpur to Alor Setar is AirAsia. They are 39% cheaper than MasWings. (Average prices, based on 602 datapoints.)