Flight Kempegowda International Airport departs from Bangalore Kempegowda International Airport at 00:30 and arrives at Bangkok Suvarnabhumi Airport at 05:55.
The flighttime is about 3h 55m. The distance travelled ("as the bird flies"): 2567 Km. So the average speed is roughly 655 Km.
There is an 1.5 hour time difference between Bangalore and Bangkok