Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 13:45 and arrives at Yangon Yangon International Airport at 14:35.
The flighttime is about 1h 20m. The distance travelled ("as the bird flies"): 516 Km. So the average speed is roughly 387 Km.
There is an 0.5 hour time difference between Bangkok and Yangon
The best day to arrive at Bangkok is Tuesday and it would be best to avoid Wednesday, as prices are on average 50% higher than on Tuesday. (Average prices, based on 455742 datapoints.)
We have a lot more statistics for flights PG 707 and between Bangkok and Yangon.