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 356 datapoints.)
The best day to arrive at Bangkok is Tuesday and it would be best to avoid Saturday, as prices are on average 241.19% higher than on Tuesday. (Average prices, based on 263 datapoints.)
The cheapest airline flying from Bangkok to Shanghai is Juneyao Airlines. They are 64% cheaper than Thai Airways. (Average prices, based on 370 datapoints.)
The best time to fly is at around 19. (Average prices, based on 566 datapoints.)