Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 01:15 and arrives at Beijing Beijing Capital International Airport at 06:55.
The flighttime is about 4h 40m. The distance travelled ("as the bird flies"): 1954 Km. So the average speed is roughly 419 Km.
There is an 1 hour time difference between Bangkok and Beijing
The best month to arrive at Bangkok is December and the most expensive month to fly is October. (Average prices, based on 936 datapoints.)
We have a lot more statistics for flights CA 980 and between Bangkok and Beijing.