Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 20:50 and arrives at Kunming Wujiaba International Airport at 00:15. The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 337 Km. So the average speed is roughly 139 Km. There is an 1 hour time difference between Bangkok and Kunming
