Please be aware that Bangkok has multiple airports and that these results are for all airports serving the city.
The best month to fly between Bangkok and Phuket is June and the most expensive month to fly is February. (Average prices, based on 18983 datapoints.)
The best day to arrive at Bangkok is Tuesday and it would be best to avoid Saturday, as prices are on average 24.21% higher than on Tuesday. (Average prices, based on 20048 datapoints.)
The cheapest airline flying from Bangkok to Phuket is Thai Lion Air. They are 46% cheaper than Thai Airways. (Average prices, based on 19023 datapoints.)
The best time to fly is at around 6. (Average prices, based on 28318 datapoints.)