Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 09:45 and arrives at Tokyo Narita International Airport at 18:00.
The flighttime is about 6h 15m. The distance travelled ("as the bird flies"): 4511 Km. So the average speed is roughly 722 Km.
There is an 2 hour time difference between Bangkok and Tokyo
The best day to arrive at Bangkok is Tuesday and it would be best to avoid Thursday, as prices are on average 70.04% higher than on Tuesday. (Average prices, based on 776431 datapoints.)
We have a lot more statistics for flights JL 32 and between Bangkok and Tokyo.
