Flight Jinnah International Airport departs from Karachi Jinnah International Airport at 23:30 and arrives at Bangkok Suvarnabhumi Airport at 06:20.
The flighttime is about 4h 50m. The distance travelled ("as the bird flies"): 3719 Km. So the average speed is roughly 769 Km.
There is an 2 hour time difference between Karachi and Bangkok