Houston

$100+ 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — HOU
Apr 2 — Apr 91
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Houston are usually found in September or October, booked 45 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 March 28, 2025.

Round-trip from

$187
(Delta)

One-way from

$100
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$413
From Washington, D.C. Dulles Intl to Houston
One-way flight from Washington, D.C. Dulles Intl to Houston
Highest demand for flights based on searches. 0% potential increase in price ($0 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Average for round-trip flights in March 2025

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 March 28, 2025.

This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/191:48 pmIAD - HOU
1 stop4h 59mDelta
Sat 4/266:00 amHOU - IAD
1 stop4h 23mDelta
Deal found 3/27$187
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1912:29 pmIAD - IAH
1 stop8h 01mDelta
Wed 4/236:00 amIAH - IAD
1 stop4h 23mDelta
Deal found 3/27$187
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/234:52 pmIAD - IAH
2 stops7h 51mAmerican Airlines
Sat 4/266:44 amIAH - IAD
1 stop5h 58mAmerican Airlines
Deal found 3/27$192
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/19:14 amIAD - IAH
1 stop10h 18mFrontier
Sat 5/38:17 amIAH - IAD
1 stop7h 17mFrontier
Deal found 3/27$198
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/35:13 pmIAD - HOU
1 stop6h 27mAmerican Airlines
Wed 5/75:00 amHOU - IAD
2 stops7h 22mAmerican Airlines
Deal found 3/27$202
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/15:40 pmIAD - IAH
3 stops25h 59mMultiple Airlines
Tue 5/61:29 pmIAH - IAD
3 stops20h 51mMultiple Airlines
Deal found 3/27$261
This United Airlines deal was found by Cheapflights users on 3/28. 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.
Sat 4/1910:12 pmIAD - IAH
Nonstop3h 27mUnited Airlines
Tue 4/227:51 pmIAH - IAD
Nonstop3h 08mUnited Airlines
Deal found 3/28$269
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/297:50 amIAD - HOU
2 stops10h 25mSouthwest
Wed 4/306:05 amHOU - IAD
1 stop7h 00mSouthwest
Deal found 3/27$294
This Sun Country Air 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2212:49 pmIAD - HOU
1 stop23h 32mSun Country Air
Sun 5/259:16 amHOU - IAD
1 stop25h 37mSun Country Air
Deal found 3/26$295

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, 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 - HOU

IADHOU

Washington, D.C. Dulles Intl

Sat 4/19

1:48 pm-5:47 pm

1 stop4h 59m

Houston Hobby

Sat 4/26

6:00 am-11:23 am

1 stop4h 23m

$187

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Sat 4/19

12:29 pm-7:30 pm

1 stop8h 01m

Houston George Bush Intcntl

Wed 4/23

6:00 am-11:23 am

1 stop4h 23m

$187

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Wed 4/23

4:52 pm-11:43 pm

2 stops7h 51m

Houston George Bush Intcntl

Sat 4/26

6:44 am-1:42 pm

1 stop5h 58m

$192

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Thu 5/1

9:14 am-6:32 pm

1 stop10h 18m

Houston George Bush Intcntl

Sat 5/3

8:17 am-4:34 pm

1 stop7h 17m

$198

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

Sat 5/3

5:13 pm-10:40 pm

1 stop6h 27m

Houston Hobby

Wed 5/7

5:00 am-1:22 pm

2 stops7h 22m

$202

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Thu 5/1

5:40 pm-6:39 pm

3 stops25h 59m

Houston George Bush Intcntl

Tue 5/6

1:29 pm-11:20 am

3 stops20h 51m

$261

Washington, D.C.Houston

IAD - IAH

IADIAH

Washington, D.C. Dulles Intl

Sat 4/19

10:12 pm-12:39 am

Nonstop3h 27m

Houston George Bush Intcntl

Tue 4/22

7:51 pm-11:59 pm

Nonstop3h 08m

$269

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

Tue 4/29

7:50 am-5:15 pm

2 stops10h 25m

Houston Hobby

Wed 4/30

6:05 am-2:05 pm

1 stop7h 00m

$294

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

Thu 5/22

12:49 pm-11:21 am

1 stop23h 32m

Houston Hobby

Sun 5/25

9:16 am-11:53 am

1 stop25h 37m

$295

Washington, D.C.Houston

IAD - HOU

IADHOU

Washington, D.C. Dulles Intl

Fri 5/23

3:13 pm-7:12 pm

1 stop4h 59m

Houston Hobby

Sun 5/25

9:16 am-11:53 am

1 stop25h 37m

$383

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 23 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

For a smooth departure from IAD, use the Aerotrain for quick access between terminals, but be prepared for long walks to some gates.

Read more about IADby Ramsey Qubein
IAH

Upon arrival at IAH, consider rideshares like Uber or Lyft for a quick 25-minute trip to downtown Houston.

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 March 21, 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 45 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 $334). 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, 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 June 30, 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.

Rainfall in Houston by month

Plan your trip to Houston by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Houston ranges from 3.2 - 5.9 inches per month. June is typically the wettest month, when rainfall can reach 5.9 in. February is typically the driest time to visit Houston when rainfall is around 3.2 in.

Temperature in Houston by month

Plan your trip to Houston by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Houston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 53.6 F).

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, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines and Delta from Washington, D.C. to Houston by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.6

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Crew

8.6

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Crew

8.6

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
8.0
Very good

Crew

8.6

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Crew

8.6

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Crew

8.6

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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

    Currently priced at $187, Delta will fly you from Washington, D.C. Dulles Intl Airport to Houston and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Frontier - these airlines can fly you to your destination from $192 and $198, respectively. These flights start at 52% 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 American Airlines ($104), Frontier ($105), and Allegiant Air ($110).

  • 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 $334). 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.

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, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$95Average$195FlexibilityNo cancel feeOn-time65%
FrontierCheapest$100Average$169FlexibilityNo cancel feeOn-time62%
DeltaCheapest$215Average$290FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$218Average$389FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$234Average$344FlexibilityNo cancel feeOn-time71%
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