Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 13:45 and arrives at Guangzhou Guangzhou Baiyun International Airport at 17:45.
The flighttime is about 3h 00m. The distance travelled ("as the bird flies"): 1426 Km. So the average speed is roughly 475 Km.
There is an 1 hour time difference between Bangkok and Guangzhou
INR
