Farther if you're looking at public transit travel times. It's ~90-120 minutes by the train-bus combo you have to take for Udvar and 120-180 for the bus only se

Farther if you're looking at public transit travel times. It's ~90-120 minutes by the train-bus combo you have to take for Udvar and 120-180 for the bus only service (no weekend service afaik) for SC Houston. The one upside may be that if you're visiting Houston you're probably already renting a car because their public transit is worse than DC's.