Flight Frankfurt Airport departs from Frankfurt Frankfurt Airport at 14:45 and arrives at Bangkok Suvarnabhumi Airport at 06:25.
The flighttime is about 10h 40m. The distance travelled ("as the bird flies"): 10024 Km. So the average speed is roughly 940 Km.
There is an 5 hour time difference between Frankfurt and Bangkok
The best day to arrive at Frankfurt is Monday and it would be best to avoid Saturday, as prices are on average 145.04% higher than on Monday. (Average prices, based on 15962 datapoints.)
We have a lot more statistics for flights TG 921 and between Frankfurt and Bangkok.