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 Tawau is October and the most expensive month to fly is May. (Average prices, based on 367 datapoints.)
The best day to arrive at Kuala Lumpur is Wednesday and it would be best to avoid Friday, as prices are on average 78.79% higher than on Wednesday. (Average prices, based on 367 datapoints.)