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

United Airlines, Delta, and Southwest can get you from Houston to Washington, D.C. Dulles Intl Airport in just under 3h 01m. Your travel time can differ by up to 3h 13m. 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 to fly from Houston to Washington, D.C. Dulles Intl Airport one-way?

For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $82. Users have also found prices from $110 and $168 on Delta and Southwest, respectively.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular airlines that fly from Houston to Washington, D.C. Dulles Intl Airport?

Before booking your flight from Houston to Washington, D.C. Dulles Intl Airport check out the most popular airlines for this route: United Airlines, Frontier or American Airlines.

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.

$74+ Flights from Houston to Washington, D.C. Dulles Intl Airport

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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Cheapflights Tip: The best prices from Houston to Washington, D.C. Dulles Intl are usually found in August or September, booked 67 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Find flight deals from Houston to Dulles Intl

Cheapest flights from Houston to Dulles Intl
Explore the most affordable flight options available from Houston to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

Thu 11/136:06 amIAH - IAD

1 stop9h 28mFrontier

Mon 11/176:00 amIAD - IAH

1 stop17h 08mFrontier

Deal found 10/21

$141

Wed 10/298:00 amIAH - IAD

1 stop11h 20mMultiple Airlines

Sun 11/25:00 amIAD - IAH

1 stop26h 44mMultiple Airlines

Deal found 10/20

$142

Fri 11/76:10 amIAH - IAD

1 stop9h 24mFrontier

Mon 11/106:00 amIAD - IAH

1 stop12h 01mFrontier

Deal found 10/20

$144

Fri 11/1412:49 pmIAH - IAD

1 stop6h 02mFrontier

Sun 11/1610:54 pmIAD - IAH

1 stop17h 42mFrontier

Deal found 10/20

$146

Tue 11/48:00 amIAH - IAD

1 stop11h 20mMultiple Airlines

Fri 11/76:00 amIAD - IAH

1 stop26h 44mMultiple Airlines

Deal found 10/21

$147

Wed 12/37:59 amIAH - IAD

1 stop5h 30mFrontier

Fri 12/55:19 pmIAD - IAH

1 stop6h 31mFrontier

Deal found 10/21

$149

Wed 12/37:59 amIAH - IAD

1 stop5h 30mFrontier

Mon 12/155:45 amIAD - IAH

1 stop12h 15mFrontier

Deal found 10/20

$150

Tue 10/288:00 amIAH - IAD

1 stop11h 20mMultiple Airlines

Tue 11/48:40 amIAD - IAH

2 stops16h 38mMultiple Airlines

Deal found 10/20

$152

Mon 10/276:05 amIAH - IAD

1 stop8h 34mFrontier

Wed 10/298:47 amIAD - IAH

1 stop10h 44mFrontier

Deal found 10/19

$154

Wed 10/228:05 amIAH - IAD

1 stop10h 41mFrontier

Wed 10/298:47 amIAD - IAH

1 stop10h 44mFrontier

Deal found 10/20

$156

Wed 12/32:32 pmHOU - IAD

1 stop5h 57mDelta

Wed 12/1012:30 pmIAD - HOU

1 stop6h 22mDelta

Deal found 10/20

$217

Fri 12/510:39 amHOU - IAD

1 stop6h 42mDelta

Wed 12/107:01 amIAD - HOU

1 stop7h 27mDelta

Deal found 10/21

$218

Best flights from Houston to Dulles Intl
Discover carefully curated flight deals from Houston to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 22, 2025.

Fri 12/56:14 pmIAH - IAD

Nonstop3h 01mUnited Airlines

Sun 12/76:00 amIAD - IAH

Nonstop3h 29mUnited Airlines

Deal found 10/21

$199

Mon 12/159:46 amIAH - IAD

1 stop6h 14mDelta

Wed 12/175:59 pmIAD - IAH

1 stop7h 00mDelta

Deal found 10/21

$218

Thu 11/276:50 amHOU - IAD

1 stop4h 20mSouthwest

Thu 12/47:40 amIAD - HOU

1 stop9h 50mSouthwest

Deal found 10/20

$313

Sun 12/146:14 pmIAH - IAD

Nonstop3h 01mUnited Airlines

Tue 12/1612:45 pmIAD - IAH

1 stop5h 29mUnited Airlines

Deal found 10/21

$204

Fri 1/97:15 amIAH - IAD

1 stop5h 38mDelta

Tue 1/136:45 amIAD - IAH

1 stop5h 42mDelta

Deal found 10/21

$218

Fri 1/912:10 pmIAH - IAD

Nonstop3h 04mUnited Airlines

Tue 1/135:45 pmIAD - IAH

Nonstop3h 46mUnited Airlines

Deal found 10/21

$261

Tue 12/26:14 pmIAH - IAD

Nonstop3h 01mUnited Airlines

Wed 12/36:00 amIAD - IAH

Nonstop3h 29mUnited Airlines

Deal found 10/21

$265

Wed 12/106:14 pmIAH - IAD

Nonstop3h 01mUnited Airlines

Sat 1/1012:42 pmIAD - IAH

1 stop5h 35mUnited Airlines

Deal found 10/21

$266

Thu 12/46:00 amHOU - IAD

1 stop4h 35mDelta

Mon 12/87:01 amIAD - HOU

1 stop7h 27mDelta

Deal found 10/20

$335

Sun 1/1111:55 amHOU - IAD

1 stop9h 45mSouthwest

Thu 1/155:30 amIAD - HOU

2 stops10h 50mSouthwest

Deal found 10/21

$401

Fri 1/166:20 pmIAH - IAD

Nonstop2h 58mUnited Airlines

Sun 1/185:45 pmIAD - IAH

Nonstop3h 48mUnited Airlines

Deal found 10/21

$279

Sun 1/186:00 amHOU - IAD

1 stop4h 28mDelta

Thu 1/2910:05 amIAD - HOU

1 stop5h 57mDelta

Deal found 10/20

$340

Mon 12/157:20 amIAH - IAD

Nonstop3h 03mUnited Airlines

Thu 12/2510:15 pmIAD - IAH

Nonstop3h 42mUnited Airlines

Deal found 10/21

$279

Sat 12/206:40 pmHOU - IAD

1 stop4h 32mDelta

Thu 1/16:00 amIAD - HOU

1 stop5h 01mDelta

Deal found 10/20

$374

Mon 12/226:00 amHOU - IAD

1 stop5h 13mDelta

Thu 1/16:00 amIAD - HOU

1 stop5h 01mDelta

Deal found 10/20

$374

Fri 12/196:47 pmHOU - IAD

1 stop4h 25mDelta

Wed 12/316:00 amIAD - HOU

1 stop5h 01mDelta

Deal found 10/20

$374

Thu 11/276:00 amHOU - IAD

1 stop7h 39mDelta

Mon 12/15:59 pmIAD - HOU

1 stop6h 41mDelta

Deal found 10/20

$374

Wed 12/246:00 amHOU - IAD

1 stop5h 13mDelta

Thu 1/16:00 amIAD - HOU

1 stop5h 01mDelta

Deal found 10/20

$374

Fri 1/96:00 amHOU - IAD

1 stop4h 28mDelta

Tue 1/139:00 amIAD - HOU

1 stop7h 02mDelta

Deal found 10/20

$422

Sat 12/206:40 pmHOU - IAD

1 stop4h 32mDelta

Sat 1/36:00 amIAD - HOU

1 stop5h 01mDelta

Deal found 10/21

$457

Wed 11/266:00 amHOU - IAD

1 stop4h 42mDelta

Mon 12/112:37 pmIAD - HOU

1 stop6h 16mDelta

Deal found 10/20

$457

Last-minute flights from Houston to Dulles Intl
Discover last-minute flight deals from Houston to Dulles Intl. Data last updated October 22, 2025 and is based on user searches.

Wed 10/228:05 amIAH - IAD

1 stop10h 41mFrontier

Wed 10/298:47 amIAD - IAH

1 stop10h 44mFrontier

Deal found 10/20

$156

Mon 10/276:05 amIAH - IAD

1 stop8h 34mFrontier

Wed 10/298:47 amIAD - IAH

1 stop10h 44mFrontier

Deal found 10/19

$154

Tue 10/288:00 amIAH - IAD

1 stop11h 20mMultiple Airlines

Tue 11/48:40 amIAD - IAH

2 stops16h 38mMultiple Airlines

Deal found 10/20

$152

Wed 10/298:00 amIAH - IAD

1 stop11h 20mMultiple Airlines

Sun 11/25:00 amIAD - IAH

1 stop26h 44mMultiple Airlines

Deal found 10/20

$142

Sat 11/110:28 amIAH - IAD

1 stop8h 23mFrontier

Mon 11/38:36 pmIAD - IAH

1 stop13h 57mFrontier

Deal found 10/21

$157

Tue 11/48:00 amIAH - IAD

1 stop11h 20mMultiple Airlines

Fri 11/76:00 amIAD - IAH

1 stop26h 44mMultiple Airlines

Deal found 10/21

$147

Thu 11/66:06 amIAH - IAD

1 stop9h 28mFrontier

Tue 11/118:40 amIAD - IAH

1 stop10h 51mFrontier

Deal found 10/21

$150

Fri 11/76:10 amIAH - IAD

1 stop9h 24mFrontier

Sun 11/94:00 pmIAD - IAH

1 stop19h 07mFrontier

Deal found 10/20

$144

Thu 11/136:06 amIAH - IAD

1 stop9h 28mFrontier

Mon 11/176:00 amIAD - IAH

1 stop17h 08mFrontier

Deal found 10/21

$141

Fri 11/146:06 pmIAH - IAD

1 stop5h 05mFrontier

Sun 11/1610:54 pmIAD - IAH

1 stop17h 42mFrontier

Deal found 10/20

$146

Thu 11/276:50 amHOU - IAD

1 stop4h 20mSouthwest

Thu 12/47:40 amIAD - HOU

1 stop9h 50mSouthwest

Deal found 10/20

$313

Thu 11/272:32 pmHOU - IAD

1 stop5h 50mDelta

Mon 12/17:49 pmIAD - HOU

2 stops18h 39mDelta

Deal found 10/21

$367

One-way flights from Houston to Dulles Intl
Search for one-way flight options from Houston to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 22, 2025.

Tue 12/29:31 amIAH - IAD

1 stop27h 58mFrontier

Deal found 10/20

$74

Wed 12/37:59 amIAH - IAD

1 stop5h 30mFrontier

Deal found 10/21

$75

Thu 11/135:56 pmIAH - IAD

1 stop5h 15mFrontier

Deal found 10/21

$76

Thu 2/196:05 amIAH - IAD

1 stop9h 27mFrontier

Deal found 10/20

$77

Tue 10/288:00 amIAH - IAD

1 stop11h 20mFrontier

Deal found 10/21

$78

Tue 11/258:35 pmIAH - IAD

1 stop10h 10mMultiple Airlines

Deal found 10/20

$80

Mon 12/86:05 amIAH - IAD

1 stop10h 20mFrontier

Deal found 10/21

$81

Wed 12/36:14 pmIAH - IAD

Nonstop3h 01mUnited Airlines

Deal found 10/21

$82

Mon 11/38:47 pmIAH - IAD

1 stop22h 33mMultiple Airlines

Deal found 10/19

$83

Sun 11/210:28 amIAH - IAD

1 stop8h 23mFrontier

Deal found 10/20

$84

Sun 11/238:35 pmIAH - IAD

1 stop10h 10mMultiple Airlines

Deal found 10/21

$85

Thu 1/226:18 pmIAH - IAD

1 stop25h 35mMultiple Airlines

Deal found 10/20

$86

Cheap flight deals from Houston to Dulles Intl

Round-trip from	$141 (Kiwi.com)
One-way from	$74 (Kiwi.com)
Popular in	November
Cheapest in	August
Average price	$349

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. 17% potential increase in price ($74 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

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

HoustonWashington, D.C.

IAH - IAD

IAHIAD

Houston George Bush Intcntl

Fri 12/5

6:14 pm-10:15 pm

Nonstop3h 01m

Washington, D.C. Dulles Intl

Sun 12/7

6:00 am-8:29 am

Nonstop3h 29m

$199

HoustonWashington, D.C.

IAH - IAD

IAHIAD

Houston George Bush Intcntl

Sun 12/14

6:14 pm-10:15 pm

Nonstop3h 01m

Washington, D.C. Dulles Intl

Tue 12/16

12:45 pm-5:14 pm

1 stop5h 29m

$204

HoustonWashington, D.C.

IAH - IAD

IAHIAD

Houston George Bush Intcntl

Mon 12/15

9:46 am-5:00 pm

1 stop6h 14m

Washington, D.C. Dulles Intl

Wed 12/17

5:59 pm-11:59 pm

1 stop7h 00m

$218

HoustonWashington, D.C.

IAH - IAD

IAHIAD

Houston George Bush Intcntl

Fri 1/9

7:15 am-1:53 pm

1 stop5h 38m

Washington, D.C. Dulles Intl

Tue 1/13

6:45 am-11:27 am

1 stop5h 42m

$218

HoustonWashington, D.C.

IAH - IAD

IAHIAD

Houston George Bush Intcntl

Fri 1/9

12:10 pm-4:14 pm

Nonstop3h 04m

Washington, D.C. Dulles Intl

Tue 1/13

5:45 pm-8:31 pm

Nonstop3h 46m

$261

HoustonWashington, D.C.

IAH - IAD

IAHIAD

Houston George Bush Intcntl

Tue 12/2

6:14 pm-10:15 pm

Nonstop3h 01m

Washington, D.C. Dulles Intl

Wed 12/3

6:00 am-8:29 am

Nonstop3h 29m

$265

HoustonWashington, D.C.

IAH - IAD

IAHIAD

Houston George Bush Intcntl

Wed 12/10

6:14 pm-10:15 pm

Nonstop3h 01m

Washington, D.C. Dulles Intl

Sat 1/10

12:42 pm-5:17 pm

1 stop5h 35m

$266

HoustonWashington, D.C.

IAH - IAD

IAHIAD

Houston George Bush Intcntl

Fri 1/16

6:20 pm-10:18 pm

Nonstop2h 58m

Washington, D.C. Dulles Intl

Sun 1/18

5:45 pm-8:33 pm

Nonstop3h 48m

$279

HoustonWashington, D.C.

IAH - IAD

IAHIAD

Houston George Bush Intcntl

Mon 12/15

7:20 am-11:23 am

Nonstop3h 03m

Washington, D.C. Dulles Intl

Thu 12/25

10:15 pm-12:57 am

Nonstop3h 42m

$279

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 11/27

6:50 am-12:10 pm

1 stop4h 20m

Washington, D.C. Dulles Intl

Thu 12/4

7:40 am-4:30 pm

1 stop9h 50m

$313

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Showing 1-10 of 42 results

...

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

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 Houston to Washington, D.C. Dulles Intl Airport

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 67 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 month to book a flight from Houston to Washington, D.C. Dulles Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Houston to Washington, D.C. Dulles Intl Airport (average of $54). Flying from Houston to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $252). 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 25% on the cost of your flight, compared to a flight in the morning.

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 Tuesday evenings when fares are most often at their lowest. Tuesday at noon 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

Airports

IAH

Check security wait times on the IAH website to save time before your flight.

IAD

Use the Washington Metro Silver Line for a cheap, 40-minute ride to downtown from IAD.

Our travel experts

Evie Carrick

Expert on IAH

Ramsey Qubein

Expert on IAD

Reviews of airlines servicing Dulles Intl

See what other customers who have flown with Delta, United Airlines, and American Airlines 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

7.9

Good

7,981 reviews

Reviews

1 / 20

8.0

Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Delta

7.9

Good

7,981 reviews

Delta

7.9

Good

7,981 reviews

Reviews

1 / 20

8.0

Excellent

Matthew,Oct 2025

GSP - ATL

United Airlines

7.4

Good

8,988 reviews

Delta

7.9

Good

7,981 reviews

Reviews

1 / 20

8.0

Excellent

Matthew,Oct 2025

GSP - ATL

American Airlines

7.2

Good

11,029 reviews

Delta

7.9

Good

7,981 reviews

Reviews

1 / 20

8.0

Excellent

Matthew,Oct 2025

GSP - ATL

Spirit Airlines

6.3

Okay

8,097 reviews

Delta

7.9

Good

7,981 reviews

Reviews

1 / 20

8.0

Excellent

Matthew,Oct 2025

GSP - ATL

Frontier

5.8

Fair

3,129 reviews

Delta

7.9

Good

7,981 reviews

Reviews

1 / 20

8.0

Excellent

Matthew,Oct 2025

GSP - ATL

Related info for your journey

How long is the flight from Houston to Washington, D.C. Dulles Intl Airport?
United Airlines, Delta, and Southwest can get you from Houston to Washington, D.C. Dulles Intl Airport in just under 3h 01m. Your travel time can differ by up to 3h 13m. 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, Spirit Airlines ($54), Frontier ($144), and United Airlines ($233) offers the cheapest pricing from Houston to Washington, D.C. Dulles Intl Airport. Users have found that Spirit Airlines is 84% 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 United Airlines. According to our data, you can fly for as low as $82. Users have also found prices from $110 and $168 on Delta and Southwest, 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, January is the cheapest month in which you can book a flight from Houston to Washington, D.C. Dulles Intl Airport (average of $54). Flying from Houston to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $252). 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.

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Top 5 airlines flying from Houston to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$54	Average$235	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$144	Average$237	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$233	Average$398	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$234	Average$411	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$236	Average$312	FlexibilityNo cancel fee	On-timeN/A

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$74+ Cheap flights from Houston to Dulles Intl (IAD)

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 12/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Houston to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Houston to Washington, D.C. Dulles Intl are usually found in August or September, booked 67 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Find flight deals from Houston to Dulles Intl

Cheapest flights from Houston to Dulles IntlExplore the most affordable flight options available from Houston to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

Explore the most affordable flight options available from Houston to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

Cheap flight deals from Houston to Dulles Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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.

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.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Houston to Dulles Intl. Price data was last updated on October 17, 2025.

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

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

Find hourly flight availability from Houston to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 22, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from Houston to Dulles Intl. Price data was last updated on December 16, 2024.

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

Airports

IAH

IAD

Our travel experts

Reviews of airlines servicing Dulles Intl

See what other customers who have flown with Delta, United Airlines, and American Airlines 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.

Related info for your journey

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Cheapest flights from Houston to Dulles Intl
Explore the most affordable flight options available from Houston to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.