Please be aware that Bangkok and Shanghai has multiple airports and that these results are for all airports serving the city.
The best month to fly between Bangkok and Shanghai is October and the most expensive month to fly is February. (Average prices, based on 362 datapoints.)
The best day to arrive at Bangkok is Tuesday and it would be best to avoid Saturday, as prices are on average 207.26% higher than on Tuesday. (Average prices, based on 362 datapoints.)
The cheapest airline flying from Bangkok to Shanghai is Juneyao Airlines. They are 68% cheaper than Thai Airways. (Average prices, based on 376 datapoints.)
The best time to fly is at around 20. (Average prices, based on 590 datapoints.)