Flight International Thurgood Marshall Airport departs from Baltimore International Thurgood Marshall Airport at 06:22 and arrives at Houston George Bush Intercontinental Airport at 08:37.
The flighttime is about 3h 15m. The distance travelled ("as the bird flies"): 2071 Km. So the average speed is roughly 637 Km.
There is an 1 hour time difference between Baltimore and Houston