iah-to-iad

 

The cheapest times to fly from IAH to IAD are

  • August 6th to February 25th (except the weeks of November 19th, November 26th, and December 17th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from IAH to IAD is early September. Prices can be as high as $790 for Sunday flights during early to mid May, or as low as $272 for Tuesday flights around early September.

 

When to Fly to Washington

Flying from Houston, TX (IAH) to Washington, DC (IAD) will usually cost between $273 to $472 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early September with an average ticket price of $297. Due to high demand the most expensive time to fly is early to mid May, with an average price of $470. Planning your trip to low-cost times can easily save you $173 on economy flights and even more on first-class flights. Generally, any price below $360 can be considered a good price for a round-trip IAH to IAD flight.

See below for a graph of average weekly prices for the IAH to IAD route. All prices are for round-trip tickets in USD.

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IAH to IAD Flight Prices

Compared to other flights, the IAH to IAD flight is much cheaper than the average and costs much less than the average flight leaving from Houston. The average price per mile (for a direct flight) is $0.19, which is below average.

 

Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $78 (19%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $331. Return trip prices are from the IAD to IAH flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

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Departure Day Prices

Return Trip Prices by Day

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Return Day Prices

 

Nonstop Flights and Layovers

Travelers looking to fly from IAH to IAD can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 3 hour 7 minutes may be realistic.

 

Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is a nonstop flight from IAH to IAD while comparing.

Destination alternative #1: Philadelphia International Airport (PHL) in Philadelphia, PA

  • 135 miles (217 km) away from IAD
  • Usually 23.37% less expensive than IAD
  • Nonstop flights available

See IAH to PHL flights

Destination alternative #2: Baltimore/Washington International Thurgood Marshall Airport (BWI) in Baltimore, MD

  • 45 miles (72 km) away from IAD
  • Usually 15.44% less expensive than IAD
  • Nonstop flights available

See IAH to BWI flights

Destination alternative #3: Newport News/Williamsburg International Airport (PHF) in Newport News/Williamsburg, VA

  • 136 miles (219 km) away from IAD
  • Usually 13.49% less expensive than IAD
  • 1-layover flights available

See IAH to PHF flights

Destination alternative #4: Charlottesville Albemarle Airport (CHO) in Charlottesville, VA

  • 77 miles (124 km) away from IAD
  • Usually 9.46% less expensive than IAD
  • 1-layover flights available

See IAH to CHO flights

Destination alternative #5: Ronald Reagan Washington National Airport (DCA) in Washington, DC

  • 24 miles (39 km) away from IAD
  • Usually 5.98% less expensive than IAD
  • Nonstop flights available

See IAH to DCA flights

Destination alternative #6: Richmond International Airport (RIC) in Richmond, VA

  • 100 miles (161 km) away from IAD
  • Usually 5.98% less expensive than IAD
  • Nonstop flights available

See IAH to RIC flights

 

Flight Questions Answered

Still have questions about flying from IAH to IAD? We’ve got answers.

Which airlines fly this route?

You can find 6 major airlines flying this route most often: Alaska, American, Delta, Frontier, Qantas, United, and potentially more during busy seasons.

How far away is it from Washington Dulles International Airport to George Bush Intercontinental/Houston Airport?

The distance between the two airports is roughly 1189 miles or 1914 kilometers.

How long does it take to fly from IAH to IAD?

The real-world flight time for a nonstop IAH to IAD flight is about 3 hour 7 minutes.

How many flights go between Houston, TX and Washington, DC?

It depends on the day of the week and the date, but a typical day might have around 64 available flights from IAH to IAD.

 

Airport Location Info

 

Departing Airport

Origination code IAH
Origination airport name George Bush Intercontinental/Houston Airport
City Houston, TX
Country the United States
Latitude 30
Longitude -95.3

Return Airport

Destination code IAD
Destination airport name Washington Dulles International Airport
City Washington, DC
Country the United States
Latitude 38.9
Longitude -77.5

 

Late and Early Flight Data

Flights from IAH to IAD tend to depart late far less frequently than the average flight. According to our recently updated data, 22% of flights departed 5 or more minutes late, and 16% of flights left 5 or more minutes early. On average you can expect to leave IAD heading for IAH about 12 minutes late. This does significantly impact arrival time, as the average landing time in Washington, DC is about 9 minutes late. The numbers below show a recent average of take-off times versus the scheduled departure flight:

  • United: 12 minutes late
  • Some airlines not reporting

 

Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.