Flight George Bush Intercontinental Airport departs from Houston George Bush Intercontinental Airport at 07:45 and arrives at Baltimore International Thurgood Marshall Airport at 11:50.
The flighttime is about 3h 05m. The distance travelled ("as the bird flies"): 2071 Km. So the average speed is roughly 672 Km.
There is an 1 hour time difference between Houston and Baltimore