Flight Don Mueang International Airport departs from Bangkok Don Mueang International Airport at 11:15 and arrives at Tokyo Narita International Airport at 19:45.
The flighttime is about 6h 30m. The distance travelled ("as the bird flies"): 4524 Km. So the average speed is roughly 696 Km.
There is an 2 hour time difference between Bangkok and Tokyo
The best day to arrive at Bangkok is Saturday and it would be best to avoid Thursday, as prices are on average 53.94% higher than on Saturday. (Average prices, based on 206949 datapoints.)
We have a lot more statistics for flights XJ 606 and between Bangkok and Tokyo.
