Please be aware that Bangkok has multiple airports and that these results are for all airports serving the city.
The best month to arrive at Bangkok is May and the most expensive month to fly is November. (Average prices, based on 15353 datapoints.)
The best day to arrive at Bangkok is Monday and it would be best to avoid Thursday, as prices are on average 21.14% higher than on Monday. (Average prices, based on 9577 datapoints.)
The cheapest airline flying to Bangkok is Thai Vietjet Air. They are 86% cheaper than Cathay Pacific. (Average prices, based on 15580 datapoints.)
At Bangkok the most flights depart around 17:00. (Hourly flights, based on 16863 datapoints.)
From Bangkok it is on average the cheapest to fly to Ubon Ratchathani and to Chiang Mai. (Average prices, based on 3044 datapoints.)
From Bangkok most of the flights depart to Kuala Lumpur, second best connected from Bangkok is Chiang Mai. (Daily flights, based on 802 datapoints.)