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$74+ 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — HOU
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
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 February 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/107:00 am
IAD
-
IAH
1 stop10h 22m
Frontier
Thu 3/125:49 pm
IAH
-
IAD
1 stop5h 42m
Frontier
Deal found 2/9$143
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/211:41 am
IAD
-
IAH
1 stop6h 31m
Frontier
Wed 3/185:58 pm
IAH
-
IAD
1 stop5h 23m
Frontier
Deal found 2/9$145
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 3/511:22 am
IAD
-
IAH
1 stop6h 50m
Frontier
Tue 3/246:00 am
IAH
-
IAD
1 stop16h 56m
Frontier
Deal found 2/8$146
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 4/249:51 am
IAD
-
IAH
1 stop8h 12m
Frontier
Sun 4/265:49 pm
IAH
-
IAD
1 stop5h 47m
Frontier
Deal found 2/11$147
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 4/249:51 am
IAD
-
IAH
1 stop8h 12m
Frontier
Mon 4/275:49 pm
IAH
-
IAD
1 stop5h 47m
Frontier
Deal found 2/9$148
This Kiwi.com deal was found by Cheapflights users on 2/7. 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 3/247:00 am
IAD
-
IAH
1 stop10h 51m
Frontier
Tue 4/75:53 pm
IAH
-
IAD
1 stop5h 43m
Frontier
Deal found 2/7$149
This Kiwi.com deal was found by Cheapflights users on 2/10. 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.
Sat 3/75:05 am
IAD
-
IAH
1 stop16h 48m
Frontier
Wed 3/186:00 am
IAH
-
IAD
1 stop17h 21m
Frontier
Deal found 2/10$152
This Kiwi.com deal was found by Cheapflights users on 2/7. 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 3/27:05 pm
IAD
-
IAH
1 stop29h 54m
Multiple Airlines
Fri 3/612:40 pm
IAH
-
IAD
1 stop10h 51m
Multiple Airlines
Deal found 2/7$154
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 3/177:00 am
IAD
-
IAH
1 stop10h 22m
Frontier
Tue 3/315:49 pm
IAH
-
IAD
1 stop5h 42m
Frontier
Deal found 2/8$155
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
Sat 4/2510:51 am
IAD
-
IAH
1 stop12h 59m
Frontier
Sun 4/266:59 pm
IAH
-
IAD
1 stop11h 28m
Frontier
Deal found 2/9$156
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/238:09 am
IAD
-
IAH
1 stop25h 31m
Frontier
Sat 3/286:20 am
IAH
-
IAD
1 stop17h 11m
Frontier
Deal found 2/9$157
This Delta deal was found by Cheapflights users on 2/8. 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.
Tue 3/3112:47 pm
IAD
-
HOU
1 stop4h 45m
Delta
Sat 5/2310:12 am
HOU
-
IAD
1 stop5h 20m
Delta
Deal found 2/8$336

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 February 11, 2026.

Round-trip from

$143
(Kiwi.com)

One-way from

$74
(Trip.com)

Popular in

February

Cheapest in

October

Average price

$470
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. 11% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 11, 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

Dulles Intl

Fly to

Houston

Route

Depart

Return

Price

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

Wed 4/22

6:20 am-2:20 pm

1 stop9h 00m

Houston Hobby

Sat 4/25

6:15 am-4:25 pm

1 stop9h 10m

$341

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Tue 4/14

8:30 am-11:03 am

Nonstop3h 33m

Houston George Bush Intcntl

Wed 4/15

7:25 am-11:35 am

Nonstop3h 10m

$355

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Sat 3/7

10:05 pm-12:30 am

Nonstop3h 25m

Houston George Bush Intcntl

Sat 3/14

7:25 am-11:26 am

Nonstop3h 01m

$357

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Thu 8/6

6:30 am-8:40 am

Nonstop3h 10m

Houston George Bush Intcntl

Sat 8/8

7:25 am-11:35 am

Nonstop3h 10m

$357

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

Tue 3/31

7:29 pm-1:28 pm

1 stop18h 59m

Houston Hobby

Tue 4/7

5:27 pm-12:39 pm

2 stops18h 12m

$366

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Tue 3/3

12:50 pm-3:31 pm

Nonstop3h 41m

Houston George Bush Intcntl

Fri 3/6

7:50 pm-11:51 pm

Nonstop3h 01m

$369

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

Wed 5/13

5:30 pm-11:08 pm

1 stop6h 38m

Houston Hobby

Tue 5/19

1:16 pm-6:57 pm

1 stop4h 41m

$375

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Wed 4/15

11:04 am-6:33 pm

1 stop8h 29m

Houston George Bush Intcntl

Tue 4/21

5:24 am-2:04 pm

1 stop7h 40m

$375

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Wed 3/4

7:35 pm-12:11 am

1 stop5h 36m

Houston George Bush Intcntl

Wed 3/11

6:54 pm-12:27 am

1 stop4h 33m

$375

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Tue 5/5

12:40 pm-3:13 pm

Nonstop3h 33m

Houston George Bush Intcntl

Mon 5/11

6:39 pm-10:49 pm

Nonstop3h 10m

$375

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Showing 1-10 of 41 results
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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 February 6, 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 February is currently the most expensive (average of $246). 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 February 11, 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 at noon tend to be the most expensive. A flight in the evening could potentially save you up to 23% 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 February 7, 2026.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Houston flight should consider departing on Thursday at noon 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 often are flights from Washington, D.C. to Houston delayed?

About 14% of weekly flights between Washington, D.C. and Houston have experienced delays in the past year, with the average delay time being 159 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 February 11, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Houston, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,177 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.8

Boarding

8.1

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
8,177 reviews
Delta
7.9
Good
8,177 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.8

Boarding

8.1

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
9,276 reviews
Delta
7.9
Good
8,177 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.8

Boarding

8.1

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
7.2
Good
11,267 reviews
Delta
7.9
Good
8,177 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.8

Boarding

8.1

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
8,444 reviews
Delta
7.9
Good
8,177 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.8

Boarding

8.1

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
3,052 reviews
Delta
7.9
Good
8,177 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.8

Boarding

8.1

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 $355, Southwest 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 $100 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 ($134).

  • 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 February is currently the most expensive (average of $246). 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.
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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 February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$63Average$174FlexibilityNo cancel feeOn-time65%
FrontierCheapest$100Average$209FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$196Average$377FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$254Average$399FlexibilityNo cancel feeOn-time69%
DeltaCheapest$257Average$418FlexibilityNo cancel feeOn-timeN/A

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