Flight
Houston to Washington
Updated: 28 May 2026
The most practical way to travel from Houston to Washington, D.C. is by air, connecting George Bush Intercontinental Airport (IAH) to Washington Dulles International Airport (IAD). Direct flights take approximately 3 hours. Driving is a long-distance journey of over 2,200 kilometers, taking roughly 21 hours via I-10 and I-81. Washington, D.C. is the nation's capital, while Houston is a major energy center. Flying is highly recommended to save time.
Total Distance: Driving distance 2,250 km, Air distance 1,950 km.
Fastest Way
Direct flight from IAH to IAD takes 3 hours.
Cheapest Way
Booking a round-trip flight at least four weeks in advance is the cheapest option.
Compare Houston to Washington Routes
Flight
Direct
Duration
3 hours
Avg Price
$200-$500
Operator
United Airlines
Route
IAH to IAD
United offers the most frequent direct service on this route.
Travel Tips
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Airport TransitUse the Silver Line Metro or ride-share to get from IAD to downtown Washington, D.C.
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TrafficWashington, D.C. traffic is intense; use the Metro to get around the city.
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DiningTry the diverse food scene in Washington, D.C., from international cuisine to fine dining.
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BookingCheck for flight deals on Tuesday afternoons for the best prices.
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PackingBring comfortable walking shoes for exploring Washington, D.C.'s diverse neighborhoods.
Safety Tips
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Stay AwareStick to well-traveled areas when exploring the city at night.
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Travel DocumentsKeep your ID and boarding pass accessible during your flight.
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HealthStay hydrated during your flight to combat dry cabin air.
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Public TransitKeep your belongings secure while riding the Metro.
People Also Ask
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Are there direct flights?Yes, United Airlines operates direct flights between IAH and IAD.
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How long is the flight?A direct flight takes about 3 hours.
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What is the best way to travel?Flying is the most efficient and practical method.
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Is Washington, D.C. walkable?Yes, downtown Washington, D.C. is very walkable and has excellent public transit.
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What is the time difference?Washington, D.C. is one hour ahead of Houston.
Quick Info
- From Houston, Texas, United States
- To Washington, District of Columbia, United States
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Modes
Best Time to Travel
April to May or September to October for mild weather in Washington, D.C.
Things to Do in Washington
1
National Mall
Explore this iconic park, home to the Lincoln Memorial, Washington Monument, and many museums.
2
Smithsonian Museums
Visit these world-renowned museums, featuring diverse collections of art, history, and science.
3
Space Center Houston
Before leaving Houston, visit this world-class museum dedicated to space exploration.
4
U.S. Capitol
Tour the historic Capitol building, the seat of the U.S. government.
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