The driving time from William P. Hobby Airport (HOU) to Dulles International Airport (IAD) is 20 hours 14 minutes by road. You can also find other options to travel from William P. Hobby Airport (HOU) to Dulles International Airport (IAD) like bus, subway, tram, train and rail. To know the travel distances while planning a journey, find the
Distance from William P. Hobby Airport (HOU) to Dulles International Airport (IAD)!