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$77+ 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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — HOU
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Houston are usually found in October or January, booked 86 days in advance, depart on a Wednesday or Monday and return on a Wednesday

Cheap 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 septiembre 17, 2025.

Round-trip from

$137
(Cheapflightsfares)

One-way from

$77
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$403
From Washington, D.C. Dulles Intl to Houston
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One-way flight from Washington, D.C. Dulles Intl to Houston
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Highest demand for flights based on searches. 2% potential increase in price ($9 potential increase over avg. RT price).
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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 September 2025
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Find 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 septiembre 17, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/187:15 amIAD - IAH
1 stop5h 25mFrontier
sáb. 10/182:10 pmIAH - IAD
1 stop5h 43mFrontier
Deal found 9/16$137
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/37:14 pmIAD - IAH
1 stop21h 22mFrontier
lun. 10/611:39 amIAH - IAD
1 stop5h 45mFrontier
Deal found 9/15$143
This CheapOair deal was found by Cheapflights users on 9/15. 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.
jue. 9/258:59 pmIAD - IAH
1 stop19h 45mFrontier
dom. 9/289:10 pmIAH - IAD
1 stop21h 59mFrontier
Deal found 9/15$144
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/227:14 pmIAD - IAH
1 stop21h 22mFrontier
jue. 9/2511:44 amIAH - IAD
1 stop5h 40mFrontier
Deal found 9/15$145
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/88:30 amIAD - IAH
Nonstop3h 22mUnited Airlines
sáb. 10/117:50 pmIAH - IAD
Nonstop3h 01mUnited Airlines
Deal found 9/15$147
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/17:10 amIAD - IAH
1 stop5h 55mFrontier
dom. 11/96:20 amIAH - IAD
1 stop9h 14mFrontier
Deal found 9/15$150
This CheapOair deal was found by Cheapflights users on 9/16. 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.
jue. 10/306:00 amIAD - IAH
1 stop12h 01mFrontier
dom. 11/211:33 amIAH - IAD
1 stop9h 36mFrontier
Deal found 9/16$151
This Trip.com deal was found by Cheapflights users on 9/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/263:15 pmIAD - IAH
1 stop19h 39mFrontier
lun. 9/2911:39 amIAH - IAD
1 stop5h 45mFrontier
Deal found 9/17$155
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/249:15 amIAD - IAH
1 stop8h 19mFrontier
dom. 9/289:10 pmIAH - IAD
1 stop21h 59mFrontier
Deal found 9/15$157
This CheapOair deal was found by Cheapflights users on 9/15. 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.
mié. 10/89:00 amIAD - IAH
1 stop8h 47mFrontier
vie. 10/106:05 amIAH - IAD
1 stop16h 24mFrontier
Deal found 9/15$163
This Trip.com deal was found by Cheapflights users on 9/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/263:15 pmIAD - IAH
1 stop19h 39mFrontier
dom. 9/289:10 pmIAH - IAD
1 stop21h 59mFrontier
Deal found 9/17$165
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
lun. 11/36:00 amIAD - IAH
1 stop7h 04mMultiple Airlines
lun. 11/35:58 pmIAH - IAD
1 stop5h 13mMultiple Airlines
Deal found 9/14$166

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 septiembre 17, 2025.
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 - IAH

IADIAH

Washington, D.C. Dulles Intl

mié. 10/8

10:18 pm-12:30 am

Nonstop3h 12m

Houston George Bush Intcntl

vie. 10/17

4:54 pm-8:59 pm

Nonstop3h 05m

$147

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

sáb. 11/8

9:00 am-1:27 pm

1 stop5h 27m

Houston Hobby

mié. 11/12

6:00 am-11:36 am

1 stop4h 36m

$237

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

mié. 10/15

5:52 pm-11:00 pm

1 stop6h 08m

Houston Hobby

jue. 10/16

6:00 am-11:31 am

1 stop4h 31m

$237

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

sáb. 11/15

9:00 am-1:28 pm

1 stop5h 28m

Houston Hobby

mar. 11/18

6:00 am-2:40 pm

1 stop7h 40m

$237

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

mar. 10/28

5:52 pm-11:00 pm

1 stop6h 08m

Houston Hobby

mié. 11/12

6:00 am-11:36 am

1 stop4h 36m

$237

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

mié. 10/29

7:05 am-1:28 pm

1 stop7h 23m

Houston Hobby

sáb. 11/8

10:13 am-4:57 pm

1 stop5h 44m

$237

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

mié. 10/15

12:27 pm-5:48 pm

1 stop6h 21m

Houston Hobby

mié. 10/22

6:00 am-2:38 pm

1 stop7h 38m

$237

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

sáb. 11/15

6:55 am-1:28 pm

1 stop7h 33m

Houston Hobby

lun. 11/24

2:32 pm-9:32 pm

1 stop6h 00m

$237

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

sáb. 11/15

3:35 pm-8:10 pm

1 stop5h 35m

Houston George Bush Intcntl

lun. 11/24

1:36 pm-9:32 pm

1 stop6h 56m

$237

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

dom. 11/23

7:49 pm-11:40 am

1 stop16h 51m

Houston George Bush Intcntl

mié. 12/3

12:34 pm-7:25 pm

1 stop5h 51m

$320

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 45 results
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The best insider tips for Washington, D.C. Dulles Intl Airport to Houston flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Houston trip
Airports
IAD

Expect long security queues at IAD, especially in the afternoon. Plan ahead to avoid delays.

Read more about IADby Ramsey Qubein
IAH

For a quick ride to downtown Houston, Uber or Lyft are recommended from Terminals A, B, and C.

Read more about IAHby Evie Carrick
Our travel experts
Evie Carrick

Evie Carrick

Expert on IAH

Evie Carrick

Evie Carrick

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

Ramsey Qubein

Ramsey Qubein

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

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 September 12, 2025.

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 84 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Houston (average of $230). Flying from Washington, D.C. Dulles Intl Airport to Houston in March is currently the most expensive (average of $330). 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 septiembre 17, 2025.

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 21% 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 December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Houston flight should consider departing on Sunday evenings when fares are most often at their lowest. Sunday afternoons 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?

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 septiembre 17, 2025.
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
8.0
Very good
7,961 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,961 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Spirit Airlines
6.3
Okay
8,023 reviews
Delta
8.0
Very good
7,961 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
5.8
Fair
3,173 reviews
Delta
8.0
Very good
7,961 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $147, United Airlines can have you in Houston from Washington, D.C. Dulles Intl Airport in 3h 12m. 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 $91, 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 Delta - these airlines can fly you to your destination from $120 and $144, respectively. These flights start at 76% 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 ($78), United Airlines ($107), and Delta ($119).

  • 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Houston (average of $230). Flying from Washington, D.C. Dulles Intl Airport to Houston in March is currently the most expensive (average of $330). 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
Reagan-National to Hobby flights
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Dulles Intl to Austin flights
Dulles Intl to George Bush Intcntl flights
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Reagan-National to McAllen flights
Baltimore to Corpus Christi flights
Baltimore to McAllen flights
Dulles Intl to Harlingen flights
Reagan-National to Harlingen flights
Baltimore to Lubbock flights
Baltimore to Brownsville flights
Reagan-National to Lubbock flights
Dulles Intl to Corpus Christi flights
Dulles Intl to Killeen flights
Reagan-National to Corpus Christi flights
Reagan-National to Amarillo flights
Baltimore to Amarillo flights
Dulles Intl to Lubbock flights
Baltimore to Killeen flights
Dulles Intl to Amarillo flights
Dulles Intl to Midland flights
Reagan-National to Brownsville flights
Dulles Intl to Brownsville flights
Dulles Intl to San Angelo flights
Dulles Intl to Waco flights
Baltimore to Waco flights
Reagan-National to San Angelo flights
Baltimore to Laredo flights
Baltimore to College Station flights
Reagan-National to College Station flights
Dulles Intl to College Station 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 septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$91Average$187FlexibilityNo cancel feeOn-time65%
FrontierCheapest$120Average$219FlexibilityNo cancel feeOn-time62%
DeltaCheapest$144Average$317FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$234Average$313FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$255Average$390FlexibilityNo cancel feeOn-time69%

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