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 March and the most expensive month to fly is June. (Average prices, based on 13059 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.)