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 3054 datapoints.)
The best day to arrive at Kuala Lumpur is Wednesday and it would be best to avoid Saturday, as prices are on average 43.08% higher than on Wednesday. (Average prices, based on 5463 datapoints.)
The cheapest airline flying from Kuala Lumpur to Bangkok is Thai AirAsia. They are 40% cheaper than Thai Airways. (Average prices, based on 3070 datapoints.)
The best time to fly is at around 20. (Average prices, based on 7787 datapoints.)