CA $203 Cheap Flights from Houston (IAH) to Washington (IAD)

Popular airlines from George Bush Intercontinental Airport (IAH) to Washington Dulles International Airport (IAD)

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Cheap flights from Houston (IAH) to Washington (IAD)

Prices were available within the past 7 days and start at CA $203 for one-way flights and CA $404 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Delta
Delta
Delta
Delta
American Airlines
United
American Airlines
American Airlines
American Airlines

Find the cheapest month to fly from Houston (IAH) to Washington (IAD)

March is typically the cheapest month to fly

From CA $171 - CA $429 per traveller.

Graph displaying average flight prices per month

Flight from Houston to Washington (IAH - IAD) route information
Origin airport
George Bush Intercontinental
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
CA $403
Distance
1903 km
Average flight time
5 hours 14 mins

Houston to Chantilly Flights

The easy way to book your flights from Houston to Washington 

With Expedia, it’s simple to find and book flights to Washington from Houston whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are Avianca, Emirates, Brussels Airlines, Swiss, Air New Zealand, United Airlines, Air China nonstop flights to Washington Dulles Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Houston to Washington today, tomorrow, or this week.  

 

Save dollars with cheap flights from George Bush Intercontinental, IAH to Washington Dulles Intl., IAD 

Sort your search results by price to find great deals on your flight from Houston to Washington—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Washington from Houston currently is just CA $404 rising to CA $594.  

Here are more money-saving tips: 

  • Fly in September when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Washington  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Washington from Houston 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Washington with Expedia today.

Frequently asked questions

How much is a flight from IAH to Dulles Intl. Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight between Houston Airport and Dulles Intl. Airport was CA $404. Fares this good don't stick around for long, so book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from IAH to Dulles Intl. Airport?
This can differ between airlines, as each has its own set of terms and conditions. Head to the Customer Service Portal, where you'll find easy instructions on how to cancel online.
How do I find cheap flights from Houston Airport to IAD that have flexible change policies?
Plenty of airlines offer the option to reschedule your flight at no extra charge. All you pay is the difference in the ticket price. When looking for IAH to IAD flights, you'll find a "No change fees" box for you to select.
How many hours is the flight from Houston Airport to Washington Dulles Intl. Airport (IAD)?
It takes around 3 hours and 2 minutes to fly from George Bush Intercontinental Airport (IAH) to Dulles Intl. Airport. But with your favourite playlist and a good book, the hours will pass by quicker.
How far is the flight from George Bush Intercontinental Airport (IAH) to Dulles Intl. Airport?
It's around 1,900 kilometres from Houston to Chantilly, so you'll be flying for a while. Keep yourself occupied by packing things like a magazine or the latest bestseller.
Which airlines fly direct from Houston Airport to Washington Dulles Intl. Airport (IAD)?
Operating 121 flights monthly, United Airlines (UA) is a great choice when flying directly from Houston Airport to Washington Dulles Intl. Airport (IAD).
Are Houston Airport to IAD flight tickets cheaper when they're purchased at the last minute?
Booking last minute from IAH to Washington Dulles Intl. Airport (IAD) can be hit-or-miss. You may be able to score a bargain, but then again, you could miss out entirely! If you'd rather play it safe and start your trip planning early on, Expedia compares flight deals up to a year in advance. Just keep in mind that not all airlines list their prices that far in advance. Our advice? Check back often as updates are made frequently.

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