Please be aware that Kuala Lumpur and Bangkok has multiple airports and that these results are for all airports serving the city.
The best month to fly between Kuala Lumpur and Bangkok is May and the most expensive month to fly is November. (Average prices, based on 4854 datapoints.)
The best day to arrive at Kuala Lumpur is Monday and it would be best to avoid Friday, as prices are on average 14.43% higher than on Monday. (Average prices, based on 41570 datapoints.)
The best time to fly is at around 19. (Average prices, based on 9736 datapoints.)