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Dulles Intl

$128+ Cheap flights from Houston to Dulles Intl (IAD)

HOU — IAD
Oct 1 — Oct 81
Thu 10/1
Thu 10/8
1 adult, Economy
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Cheap flight deals from Houston to Dulles Intl

Cheapest flights from Houston to Dulles Intl

Tue 9/298:25 am -
1 stop10h 44m
Mon 10/269:06 pm -
1 stop11h 17m
Deal found 8/28$220
Fri 11/138:18 am -
1 stop10h 53m
Mon 11/166:07 pm -
1 stop21h 37m
Deal found 8/30$221
Fri 9/2510:09 pm -
2 stops25h 01m
Mon 9/287:50 am -
1 stop15h 40m
Deal found 8/27$222
Tue 9/298:25 am -
1 stop10h 44m
Fri 10/239:06 pm -
1 stop11h 13m
Deal found 8/28$223
Sat 9/196:08 am -
1 stop10h 10m
Tue 10/2711:16 am -
1 stop10h 39m
Deal found 8/29$224
Thu 9/246:08 am -
1 stop10h 10m
Wed 10/219:06 pm -
1 stop11h 13m
Deal found 8/29$225
Thu 10/112:08 pm -
1 stop11h 02m
Wed 10/219:06 pm -
1 stop11h 13m
Deal found 8/28$226
Tue 9/156:28 am -
1 stop9h 50m
Tue 9/229:04 pm -
1 stop11h 13m
Deal found 8/27$227
Fri 9/1812:08 pm -
1 stop11h 02m
Mon 9/219:04 pm -
1 stop11h 13m
Deal found 8/29$228
Tue 9/298:25 am -
1 stop10h 44m
Thu 10/229:06 pm -
1 stop11h 13m
Deal found 8/28$229
Thu 9/172:57 pm -
1 stop14h 23m
Mon 9/219:04 pm -
1 stop11h 13m
Deal found 8/29$231
Thu 9/246:08 am -
1 stop10h 10m
Mon 9/289:04 pm -
1 stop11h 13m
Deal found 8/31$232

Find flight deals from Houston to Dulles Intl

Round-trip from

$220
(Kiwi.com)

One-way from

$128
(Super.com)

Popular in

February

Cheapest in

October

Average price

$362
From Houston to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Houston to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($104 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Houston to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HoustonWashington, D.C.

HOU Houston Hobby - IAD Washington, D.C. Dulles Intl

HOUIAD

Houston Hobby

Fri 9/25

5:20 pm-12:41 am

1 stop6h 21m

Washington, D.C. Dulles Intl

Thu 10/1

8:08 am-1:18 pm

1 stop6h 10m

$326

HoustonWashington, D.C.

IAH Houston George Bush Intcntl - IAD Washington, D.C. Dulles Intl

IAHIAD

Houston George Bush Intcntl

Fri 10/2

6:25 pm-10:30 pm

Nonstop3h 05m

Washington, D.C. Dulles Intl

Sun 10/4

8:30 am-10:51 am

Nonstop3h 21m

$381

HoustonWashington, D.C.

IAH Houston George Bush Intcntl - IAD Washington, D.C. Dulles Intl

IAHIAD

Houston George Bush Intcntl

Thu 11/12

5:35 am-1:54 pm

1 stop7h 19m

Washington, D.C. Dulles Intl

Sun 11/15

6:00 am-10:35 am

1 stop5h 35m

$392

HoustonWashington, D.C.

IAH Houston George Bush Intcntl - IAD Washington, D.C. Dulles Intl

IAHIAD

Houston George Bush Intcntl

Tue 12/22

6:46 pm-12:37 am

1 stop4h 51m

Washington, D.C. Dulles Intl

Thu 12/31

10:43 am-4:21 pm

1 stop6h 38m

$397

HoustonWashington, D.C.

IAH Houston George Bush Intcntl - IAD Washington, D.C. Dulles Intl

IAHIAD

Houston George Bush Intcntl

Thu 12/24

2:39 pm-10:57 pm

1 stop7h 18m

Washington, D.C. Dulles Intl

Thu 12/31

6:00 am-10:37 am

1 stop5h 37m

$407

HoustonWashington, D.C.

HOU Houston Hobby - IAD Washington, D.C. Dulles Intl

HOUIAD

Houston Hobby

Thu 10/1

11:00 am-6:20 pm

1 stop6h 20m

Washington, D.C. Dulles Intl

Thu 10/8

4:48 pm-11:03 pm

1 stop7h 15m

$411

HoustonWashington, D.C.

IAH Houston George Bush Intcntl - IAD Washington, D.C. Dulles Intl

IAHIAD

Houston George Bush Intcntl

Mon 11/23

3:35 pm-11:21 pm

1 stop6h 46m

Washington, D.C. Dulles Intl

Thu 11/26

6:00 am-11:22 am

1 stop6h 22m

$412

HoustonWashington, D.C.

HOU Houston Hobby - IAD Washington, D.C. Dulles Intl

HOUIAD

Houston Hobby

Wed 10/28

6:09 am-2:08 pm

1 stop6h 59m

Washington, D.C. Dulles Intl

Mon 11/2

6:12 pm-11:03 pm

1 stop5h 51m

$417

HoustonWashington, D.C.

HOU Houston Hobby - IAD Washington, D.C. Dulles Intl

HOUIAD

Houston Hobby

Tue 10/6

6:09 am-2:08 pm

1 stop6h 59m

Washington, D.C. Dulles Intl

Sat 10/10

6:12 pm-11:03 pm

1 stop5h 51m

$419

HoustonWashington, D.C.

HOU Houston Hobby - IAD Washington, D.C. Dulles Intl

HOUIAD

Houston Hobby

Thu 10/1

11:00 am-6:20 pm

1 stop6h 20m

Washington, D.C. Dulles Intl

Mon 10/5

6:00 am-10:00 am

1 stop5h 00m

$430

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/31

Showing 1-10 of 45 resultsSorted by cheapest first
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Best time to book a flight from Houston to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Houston with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Houston to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Houston to Washington, D.C. Dulles Intl Airport?

Currently, October is the cheapest month in which you can book a flight from Houston to Washington, D.C. Dulles Intl Airport (average of $331). Flying from Houston to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $580). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from HOU to IAD?

It’s optimal to fly from Houston to Washington, D.C. Dulles Intl Airport at noon. By choosing this option you can save up to 32% on the cost of your flight, compared to a flight in the evening.

How much does it cost to fly round-trip from Houston to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment.
Houston to Washington, D.C. Dulles Intl Airport flights typically cost between $258 and $434 in September.
The cheapest round-trip price found within the last 5 days was $220 on Frontier (Sep 29-Oct 26).

How often are flights from Houston to Washington, D.C. delayed?

About 30% of weekly flights between Houston and Washington, D.C. have experienced delays in the past year, with the average delay time being 72 minutes.

What is the most punctual flight time for Houston to Washington, D.C. flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

How far ahead should I book a flight from Houston to Washington, D.C. Dulles Intl Airport?

To ensure you get the cheapest price possible for a flight from Houston to Washington, D.C. Dulles Intl Airport, you should look to book at least 88 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest day to fly from Houston to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their Houston to Washington, D.C. Dulles Intl Airport flight should consider departing on Thursday at noon when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Houston to Washington, D.C. Dulles Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your Houston to Washington, D.C. Dulles Intl Airport trip
Our travel experts
Evie Carrick

Evie Carrick

Expert on IAH

Evie Carrick is a writer and editor who has lived in five countries and traveled to over 50, with extensive experience flying around the world. She was born in Colorado, but has spent time flying to both coasts to visit family. She writes regularly for Travel + Leisure, BuzzFeed, and SKI and recently published seven travel journals with Simon & Schuster.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Dulles Intl

See what other customers who have flown with Delta,United Airlines, andFrontier from Houston to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,536 reviews

Food

7.2

Entertainment

7.8

Boarding

8.1

Comfort

7.8

Overall

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.
Delta
7.8
Good
8,536 reviews
Delta
7.8
Good
8,536 reviews

Food

7.2

Entertainment

7.8

Boarding

8.1

Comfort

7.8

Overall

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.
United Airlines
7.4
Good
10,152 reviews
Delta
7.8
Good
8,536 reviews

Food

7.2

Entertainment

7.8

Boarding

8.1

Comfort

7.8

Overall

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.
Frontier
5.6
Fair
2,630 reviews
Delta
7.8
Good
8,536 reviews

Food

7.2

Entertainment

7.8

Boarding

8.1

Comfort

7.8

Overall

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.

Related info for your journey

  • How long is the flight from Houston to Washington, D.C. Dulles Intl Airport?

    Delta and United Airlines can get you from Houston to Washington, D.C. Dulles Intl Airport in just under 3h 05m. Your travel time can differ by up to 3h 16m. Houston and Washington, D.C. Dulles Intl Airport are separated by a distance of 1188 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Houston to Washington, D.C. Dulles Intl Airport round-trip?

    According to our current data, Frontier ($120), Delta ($232), and United Airlines ($243) offers the cheapest pricing from Houston to Washington, D.C. Dulles Intl Airport. Users have found that Frontier is 73% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Houston to Washington, D.C. Dulles Intl Airport one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $55. Users have also found prices from $159 and $187 on United Airlines and Delta, respectively.

  • Can I find deals for flights from Houston to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Houston to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Houston to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Houston to Dulles Intl.

  • Can I find deals for business class flights from Houston to Dulles Intl?

    Yes. Cheapflights offers flight deals from Houston to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Houston to Washington, D.C. Dulles Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from Houston to Washington, D.C. Dulles Intl Airport (average of $331). Flying from Houston to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $580). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Owings Mills
Arlington
Tysons
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Fredericksburg
Woodbridge
Falls Church
Sterling
Hanover
Laurel
Oxon Hill
Clinton
Hunt Valley
Silver Spring

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Houston to Dulles Intl

AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$120Average$236FlexibilityNo cancel feeOn-time62%
DeltaCheapest$232Average$386FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$243Average$463FlexibilityNo cancel feeOn-time69%

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