Flight Kempegowda International Airport departs from Bangalore Kempegowda International Airport at 06:35 and arrives at Bangkok Suvarnabhumi Airport at 12:05.
The flighttime is about 4h 00m. The distance travelled ("as the bird flies"): 2567 Km. So the average speed is roughly 642 Km.
There is an 1.5 hour time difference between Bangalore and Bangkok