Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 08:45 and arrives at Luang Prabang Luang Prabang International Airport at 10:20.
The flighttime is about 0h 35m. The distance travelled ("as the bird flies"): 208 Km. So the average speed is roughly 357 Km.
There is an 1 hour time difference between Bangkok and Luang Prabang