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$83+ Cheap flights from Dulles Intl (IAD) to Houston

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — HOU
Apr 27 — May 41
Mon 4/27
Mon 5/4
1 adult, Economy
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Cheap flight deals from Dulles Intl to Houston

Cheapest flights from Dulles Intl to Houston
Explore the most affordable flight options available from Dulles Intl to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2026.

This Super.com deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:12 am
IAD
-
IAH
1 stop25h 26m
Frontier
Thu 4/234:06 pm
IAH
-
IAD
1 stop7h 30m
Frontier
Deal found 3/24$166
This Kiwi.com deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1310:25 pm
IAD
-
IAH
1 stop12h 59m
Multiple Airlines
Thu 4/164:06 pm
IAH
-
IAD
1 stop7h 30m
Multiple Airlines
Deal found 3/26$169
This Kiwi.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/88:30 pm
IAD
-
IAH
1 stop13h 08m
Frontier
Fri 4/246:14 pm
IAH
-
IAD
1 stop14h 40m
Frontier
Deal found 3/25$170
This CheapOair deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:20 am
IAD
-
IAH
1 stop11h 34m
Frontier
Sat 5/22:01 pm
IAH
-
IAD
1 stop18h 06m
Frontier
Deal found 3/27$171
This Kiwi.com deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:15 am
IAD
-
IAH
1 stop10h 39m
Frontier
Wed 4/296:14 pm
IAH
-
IAD
2 stops16h 21m
Frontier
Deal found 3/23$172
This Kiwi.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:19 pm
IAD
-
IAH
1 stop23h 35m
Frontier
Mon 4/277:48 pm
IAH
-
IAD
2 stops27h 48m
Frontier
Deal found 3/25$173
This Kiwi.com deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/138:30 pm
IAD
-
IAH
1 stop13h 08m
Frontier
Fri 4/178:50 pm
IAH
-
IAD
2 stops26h 46m
Frontier
Deal found 3/24$174
This Kiwi.com deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:34 pm
IAD
-
IAH
1 stop7h 37m
Frontier
Thu 4/164:06 pm
IAH
-
IAD
1 stop7h 30m
Frontier
Deal found 3/26$175
This Kiwi.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:26 pm
IAD
-
IAH
1 stop18h 20m
Frontier
Thu 4/234:06 pm
IAH
-
IAD
1 stop7h 30m
Frontier
Deal found 3/25$177
This Kiwi.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:34 pm
IAD
-
IAH
1 stop7h 37m
Frontier
Sat 4/256:10 am
IAH
-
IAD
1 stop17h 26m
Frontier
Deal found 3/25$178
This Kiwi.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1712:24 pm
IAD
-
IAH
1 stop23h 47m
Multiple Airlines
Mon 4/201:17 pm
IAH
-
IAD
1 stop10h 19m
Multiple Airlines
Deal found 3/25$179
This Delta deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:00 am
IAD
-
HOU
1 stop4h 58m
Delta
Wed 4/291:31 pm
HOU
-
IAD
1 stop6h 21m
Delta
Deal found 3/23$305

Find flight deals from Dulles Intl to Houston

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Houston (HO1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 28, 2026.

Round-trip from

$166
(Super.com)

One-way from

$83
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$449
From Washington, D.C. Dulles Intl to Houston
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Houston
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($3 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in March 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Houston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Houston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Wed 4/22

5:37 pm-8:10 pm

Nonstop3h 33m

Houston George Bush Intcntl

Wed 4/29

4:47 pm-8:56 pm

Nonstop3h 09m

$285

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

Wed 5/13

8:05 am-12:11 pm

1 stop5h 06m

Houston Hobby

Sat 5/16

6:00 am-2:13 pm

1 stop7h 13m

$337

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

Mon 5/11

7:38 pm-9:32 am

1 stop14h 54m

Houston Hobby

Wed 5/27

1:06 pm-12:51 am

1 stop10h 45m

$357

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

Mon 4/27

6:00 am-9:58 am

1 stop4h 58m

Houston Hobby

Sat 5/2

5:23 pm-12:27 am

1 stop6h 04m

$369

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

Wed 4/22

6:20 am-4:10 pm

1 stop10h 50m

Houston Hobby

Fri 4/24

12:00 pm-12:20 am

1 stop11h 20m

$381

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Fri 4/24

6:00 am-8:27 am

Nonstop3h 27m

Houston George Bush Intcntl

Mon 4/27

6:33 pm-10:44 pm

Nonstop3h 11m

$381

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

Tue 5/12

4:30 pm-11:25 pm

1 stop7h 55m

Houston Hobby

Fri 5/15

12:00 pm-12:20 am

1 stop11h 20m

$387

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

Fri 4/24

6:00 am-9:58 am

1 stop4h 58m

Houston Hobby

Tue 4/28

6:00 am-11:42 am

1 stop4h 42m

$391

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Mon 4/20

3:00 pm-9:35 pm

1 stop7h 35m

Houston George Bush Intcntl

Mon 4/27

3:21 pm-11:03 pm

1 stop6h 42m

$392

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Thu 5/14

8:30 am-11:03 am

Nonstop3h 33m

Houston George Bush Intcntl

Sun 5/17

6:39 pm-10:49 pm

Nonstop3h 10m

$403

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 43 resultsSorted by cheapest first
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5

Best time to book a flight from Dulles Intl to Houston

Have a flexible travel schedule? Discover the best time to fly to Houston from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Houston. Price data was last updated on March 13, 2026.

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Houston may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, December is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Houston (average of $104). Flying from Washington, D.C. Dulles Intl Airport to Houston in March is currently the most expensive (average of $199). 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 IAD to HOU?

Find hourly flight availability from Dulles Intl to Houston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2026.

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Houston is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 15% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Houston. Price data was last updated on March 23, 2026.

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

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

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

About 13% of weekly flights between Washington, D.C. and Houston have experienced delays in the past year, with the average delay time being 156 minutes.

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

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

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

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

Which airline has the best punctuality record on Washington, D.C. to Houston flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 13% of flights being delayed.

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

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Houston 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 Houston

Get insights into the airlines that provide service to Houston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Houston. Reviews last updated March 28, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Houston, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,355 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,355 reviews
Delta
7.9
Good
8,355 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,499 reviews
Delta
7.9
Good
8,355 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,520 reviews
Delta
7.9
Good
8,355 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Spirit Airlines
6.3
Okay
8,552 reviews
Delta
7.9
Good
8,355 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Frontier
5.7
Fair
3,013 reviews
Delta
7.9
Good
8,355 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Houston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    For as low as $285, United Airlines can have you in Houston from Washington, D.C. Dulles Intl Airport in 3h 33m. Washington, D.C. Dulles Intl Airport and Houston 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 Washington, D.C. Dulles Intl Airport to Houston round-trip?

    Currently priced at $63, Spirit Airlines will fly you from Washington, D.C. Dulles Intl Airport to Houston and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and American Airlines - these airlines can fly you to your destination from $104 and $196, respectively. These flights start at 83% lower than the current average price 3 months from now.

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

    The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Houston are Frontier ($58), Delta ($118), and United Airlines ($122).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Houston 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 Washington, D.C. Dulles Intl Airport to Houston?

    Currently, December is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Houston (average of $104). Flying from Washington, D.C. Dulles Intl Airport to Houston in March is currently the most expensive (average of $199). 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

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Alternative routes for Dulles Intl to Houston

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Dallas/Fort Worth flights
Baltimore to Dallas/Fort Worth flights
Reagan-National to Dallas/Fort Worth flights
Dulles Intl to Hobby flights
Reagan-National to Hobby flights
Baltimore to Hobby flights
Dulles Intl to George Bush Intcntl flights
Dulles Intl to Austin flights
Reagan-National to George Bush Intcntl flights
Baltimore to Austin flights
Reagan-National to Austin flights
Baltimore to George Bush Intcntl flights
Dulles Intl to Love Field flights
Dulles Intl to San Antonio flights
Baltimore to Love Field flights
Reagan-National to Love Field flights
Baltimore to San Antonio flights
Reagan-National to San Antonio flights
Dulles Intl to El Paso flights
Reagan-National to El Paso flights
Baltimore to El Paso flights
Reagan-National to Lubbock flights
Dulles Intl to Lubbock flights
Baltimore to Corpus Christi flights
Dulles Intl to Corpus Christi flights
Reagan-National to Corpus Christi flights
Baltimore to Lubbock flights
Baltimore to Harlingen flights
Dulles Intl to Harlingen flights
Baltimore to Brownsville flights
Baltimore to Amarillo flights
Baltimore to McAllen flights
Baltimore to Abilene flights
Reagan-National to McAllen flights
Dulles Intl to Brownsville flights
Reagan-National to Midland flights
Dulles Intl to Killeen flights
Dulles Intl to Midland flights
Reagan-National to Abilene flights
Baltimore to Killeen flights
Reagan-National to Killeen flights
Baltimore to Wichita Falls flights
Dulles Intl to Longview flights
Reagan-National to Waco flights

Top 5 airlines flying from Dulles Intl to Houston

Discover the top 5 airlines that operate flights from Dulles Intl to Houston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$63Average$223FlexibilityNo cancel feeOn-time65%
FrontierCheapest$104Average$213FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$196Average$392FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$236Average$413FlexibilityNo cancel feeOn-time69%
DeltaCheapest$257Average$418FlexibilityNo cancel feeOn-timeN/A

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