Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 12:25 and arrives at Rome Leonardo da Vinci–Fiumicino Airport at 19:15. The flighttime is about 11h 50m. The distance travelled ("as the bird flies"): 9703 Km. So the average speed is roughly 820 Km. There is an 5 hour time difference between Bangkok and Rome