Is the flight better than driving?

The flight is much faster and more convenient.

How long is the drive?

It is about 20-22 hours of driving time.

What is the best way to get around?

A car is recommended for exploring the city.

Are there direct flights?

Yes, many airlines offer direct flights from IAD.

Yes, it is generally safe, but use common sense.

Washington

Houston

Flight Driving

Washington to Houston

Updated: 28 May 2026

The journey from Washington DC to Houston covers approximately 1,400 miles. Flying from DCA or IAD to George Bush Intercontinental Airport is the most efficient way to reach the Space City. Driving via I-85 and I-10 is a long, 20-22 hour trip that requires careful planning. This route is popular for those visiting for business, the space center, or the diverse culinary scene.

Total Distance: Driving distance 2,300 km, straight-line air distance 1,900 km.

Fastest Way

Non-stop flight from IAD to IAH, taking approximately 3 hours 15 minutes.

Cheapest Way

Budget airlines like Southwest or Spirit, often under $150 if booked in advance.

Compare Washington to Houston Routes

	Flight Direct	Driving Direct
Duration	3 hours 15 mins	22 hours
Avg Price	$150 - $450	$180 - $300 (fuel)
Operator	United Airlines	Personal Car
Route	IAD to IAH non-stop.	I-85 S to I-10 W.
Tip	IAH is a major hub for United Airlines.	The drive is long; plan for at least two overnight stops.

Travel Tips

Airport Transit
Rideshare services are the best way to get from IAH to downtown Houston.
Driving Strategy
If driving, be prepared for heavy traffic in major cities along the route.
Dining
Try authentic Tex-Mex and barbecue at local spots.
Booking
Book flights in advance to get the best fares.
Weather
Summers are extremely hot and humid; plan outdoor activities for the early morning.