Flight George Bush Intercontinental Airport departs from Houston George Bush Intercontinental Airport at 15:45 and arrives at New York John F Kennedy International Airport at 20:13.
The flighttime is about 3h 28m. The distance travelled ("as the bird flies"): 2390 Km. So the average speed is roughly 689 Km.
There is an 1 hour time difference between Houston and New York