Flight George Bush Intercontinental Airport departs from Houston George Bush Intercontinental Airport at 18:10 and arrives at Doha International Airport at 16:50.
The flighttime is about 14h 40m. The distance travelled ("as the bird flies"): 16332 Km. So the average speed is roughly 1114 Km.
There is an 8 hour time difference between Houston and Doha