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

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

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 Hobby Airport to Washington, D.C. Dulles Intl Airport?

The most popular airlines flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport are American Airlines, Frontier and Spirit Airlines. Something to consider prior to booking your flight.

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

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

How can I find direct flights from Hobby to Dulles Intl?

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

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

Yes. Cheapflights offers flight deals from Hobby 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.

$150+ Cheap Flights from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport

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

Airfare is typical for this route at the moment. Houston Hobby Airport to Washington, D.C. Dulles Intl Airport flights typically cost between $261 and $457 in October. The cheapest round-trip price found within the last 3 days was $283 on American Airlines (Oct 15-Oct 22).

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Find cheap flights from Hobby to Dulles Intl with Cheapflights

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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

Cheap flight deals from Hobby to Dulles Intl

Round-trip from	$283 (American Airlines)
One-way from	$150 (American Airlines)
Popular in	November
Cheapest in	August
Average price	$315

From Houston Hobby to Washington, D.C. Dulles Intl

Search Deals

One-way flight from Houston Hobby to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($58 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($13 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 Hobby to Dulles Intl

Cheapest flights from Hobby to Dulles Intl
Explore the most affordable flight options available from Hobby to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2025.

Wed 10/1510:12 amHOU - IAD

1 stop11h 39mAmerican Airlines

Wed 10/226:11 amIAD - HOU

1 stop10h 58mAmerican Airlines

Deal found 9/16

$283

Wed 10/86:00 amHOU - IAD

1 stop9h 47mAmerican Airlines

Sat 10/116:11 amIAD - HOU

1 stop10h 58mAmerican Airlines

Deal found 9/16

$293

Mon 11/176:00 amHOU - IAD

1 stop9h 11mAmerican Airlines

Sat 11/225:03 pmIAD - HOU

1 stop7h 54mAmerican Airlines

Deal found 9/16

$335

Wed 10/156:00 amHOU - IAD

1 stop4h 31mDelta

Wed 10/227:05 amIAD - HOU

1 stop7h 22mDelta

Deal found 9/17

$337

Tue 10/76:00 amHOU - IAD

1 stop7h 38mDelta

Sat 10/115:52 pmIAD - HOU

1 stop6h 08mDelta

Deal found 9/16

$352

Wed 10/810:13 amHOU - IAD

1 stop5h 44mDelta

Tue 10/145:52 pmIAD - HOU

1 stop6h 08mDelta

Deal found 9/17

$358

Wed 10/225:45 amHOU - IAD

1 stop9h 15mSouthwest

Fri 10/241:45 pmIAD - HOU

1 stop10h 10mSouthwest

Deal found 9/16

$363

Thu 10/236:00 amHOU - IAD

1 stop4h 31mDelta

Sat 10/259:00 amIAD - HOU

1 stop5h 27mDelta

Deal found 9/17

$367

Wed 10/156:00 amHOU - IAD

1 stop7h 38mDelta

Sun 10/197:05 amIAD - HOU

1 stop7h 22mDelta

Deal found 9/15

$368

Fri 10/246:44 pmHOU - IAD

1 stop4h 28mDelta

Sat 10/259:00 amIAD - HOU

1 stop5h 27mDelta

Deal found 9/17

$378

Fri 11/711:55 amHOU - IAD

2 stops10h 35mSouthwest

Mon 11/101:50 pmIAD - HOU

1 stop8h 05mSouthwest

Deal found 9/16

$383

Best flights from Hobby to Dulles Intl
Discover carefully curated flight deals from Hobby to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2025.

Wed 10/156:00 amHOU - IAD

1 stop4h 31mDelta

Wed 10/227:05 amIAD - HOU

1 stop7h 22mDelta

Deal found 9/17

$337

Thu 10/3010:03 amHOU - IAD

1 stop6h 01mAmerican Airlines

Sat 11/15:37 pmIAD - HOU

1 stop5h 37mAmerican Airlines

Deal found 9/17

$367

Thu 1/86:15 amHOU - IAD

1 stop9h 35mSouthwest

Mon 1/129:05 amIAD - HOU

1 stop9h 30mSouthwest

Deal found 9/16

$367

Tue 10/146:00 amHOU - IAD

1 stop4h 31mDelta

Sat 10/185:52 pmIAD - HOU

1 stop6h 08mDelta

Deal found 9/17

$352

Fri 11/711:55 amHOU - IAD

2 stops10h 35mSouthwest

Mon 11/101:50 pmIAD - HOU

1 stop8h 05mSouthwest

Deal found 9/16

$383

Tue 10/76:00 amHOU - IAD

1 stop7h 38mDelta

Sat 10/115:52 pmIAD - HOU

1 stop6h 08mDelta

Deal found 9/16

$352

Thu 10/235:35 amHOU - IAD

1 stop6h 25mSouthwest

Fri 10/241:45 pmIAD - HOU

1 stop10h 10mSouthwest

Deal found 9/16

$389

Fri 1/910:30 amHOU - IAD

1 stop5h 06mDelta

Tue 1/139:00 amIAD - HOU

1 stop7h 02mDelta

Deal found 9/16

$363

Thu 10/236:00 amHOU - IAD

1 stop4h 31mDelta

Sat 10/259:00 amIAD - HOU

1 stop5h 27mDelta

Deal found 9/17

$367

Thu 11/2710:40 amHOU - IAD

1 stop6h 46mDelta

Sat 11/297:01 amIAD - HOU

1 stop7h 27mDelta

Deal found 9/15

$368

Mon 11/106:53 pmHOU - IAD

1 stop4h 25mDelta

Fri 11/145:59 pmIAD - HOU

1 stop6h 47mDelta

Deal found 9/16

$378

Last-minute flights from Hobby to Dulles Intl
Discover last-minute flight deals from Hobby to Dulles Intl. Data last updated September 18, 2025 and is based on user searches.

Tue 10/76:00 amHOU - IAD

1 stop7h 38mDelta

Sat 10/115:52 pmIAD - HOU

1 stop6h 08mDelta

Deal found 9/16

$352

Wed 10/86:00 amHOU - IAD

1 stop9h 47mAmerican Airlines

Sat 10/116:11 amIAD - HOU

1 stop10h 58mAmerican Airlines

Deal found 9/16

$293

Wed 10/810:13 amHOU - IAD

1 stop5h 44mDelta

Tue 10/145:52 pmIAD - HOU

1 stop6h 08mDelta

Deal found 9/17

$358

Tue 10/146:00 amHOU - IAD

1 stop4h 31mDelta

Fri 10/177:05 amIAD - HOU

1 stop7h 22mDelta

Deal found 9/17

$397

Wed 10/1510:12 amHOU - IAD

1 stop11h 39mAmerican Airlines

Wed 10/226:11 amIAD - HOU

1 stop10h 58mAmerican Airlines

Deal found 9/16

$283

Wed 10/156:00 amHOU - IAD

1 stop4h 31mDelta

Wed 10/227:05 amIAD - HOU

1 stop7h 22mDelta

Deal found 9/17

$337

Wed 10/156:00 amHOU - IAD

1 stop7h 38mDelta

Sun 10/197:05 amIAD - HOU

1 stop7h 22mDelta

Deal found 9/15

$368

Sun 10/196:00 amHOU - IAD

1 stop4h 31mDelta

Tue 10/2112:27 pmIAD - HOU

1 stop6h 21mDelta

Deal found 9/17

$387

Wed 10/225:45 amHOU - IAD

1 stop9h 15mSouthwest

Fri 10/241:45 pmIAD - HOU

1 stop10h 10mSouthwest

Deal found 9/16

$363

Thu 10/236:00 amHOU - IAD

1 stop4h 31mDelta

Sat 10/259:00 amIAD - HOU

1 stop5h 27mDelta

Deal found 9/17

$367

Thu 10/235:35 amHOU - IAD

1 stop6h 25mSouthwest

Fri 10/241:45 pmIAD - HOU

1 stop10h 10mSouthwest

Deal found 9/16

$389

Fri 10/246:44 pmHOU - IAD

1 stop4h 28mDelta

Sat 10/259:00 amIAD - HOU

1 stop5h 27mDelta

Deal found 9/17

$378

One-way flights from Hobby to Dulles Intl
Search for one-way flight options from Hobby to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 18, 2025.

Wed 10/86:00 amHOU - IAD

1 stop9h 47mAmerican Airlines

Deal found 9/16

$150

Mon 11/247:49 pmHOU - IAD

1 stop14h 53mSun Country Air

Deal found 9/16

$151

Sat 10/116:00 amHOU - IAD

1 stop9h 47mAmerican Airlines

Deal found 9/17

$157

Sun 10/129:34 amHOU - IAD

2 stops22h 35mMultiple Airlines

Deal found 9/16

$162

Wed 10/2210:12 amHOU - IAD

1 stop5h 35mAmerican Airlines

Deal found 9/16

$169

Sat 11/110:13 amHOU - IAD

1 stop8h 11mDelta

Deal found 9/16

$177

Tue 11/256:37 pmHOU - IAD

1 stop16h 17mSun Country Air

Deal found 9/16

$181

Thu 1/110:13 amHOU - IAD

1 stop5h 52mAmerican Airlines

Deal found 9/16

$184

Sat 12/1310:08 amHOU - IAD

2 stops8h 23mAmerican Airlines

Deal found 9/16

$189

Fri 11/74:24 pmHOU - IAD

1 stop5h 09mAmerican Airlines

Deal found 9/16

$195

Cheapflights Fare Finder

Use the filters below to find and compare flights from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Wed 10/15

6:00 am-11:31 am

1 stop4h 31m

Washington, D.C. Dulles Intl

Wed 10/22

7:05 am-1:27 pm

1 stop7h 22m

$337

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 10/14

6:00 am-11:31 am

1 stop4h 31m

Washington, D.C. Dulles Intl

Sat 10/18

5:52 pm-11:00 pm

1 stop6h 08m

$352

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 10/7

6:00 am-2:38 pm

1 stop7h 38m

Washington, D.C. Dulles Intl

Sat 10/11

5:52 pm-11:00 pm

1 stop6h 08m

$352

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Fri 1/9

10:30 am-4:36 pm

1 stop5h 06m

Washington, D.C. Dulles Intl

Tue 1/13

9:00 am-3:02 pm

1 stop7h 02m

$363

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 10/30

10:03 am-5:04 pm

1 stop6h 01m

Washington, D.C. Dulles Intl

Sat 11/1

5:37 pm-10:14 pm

1 stop5h 37m

$367

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 1/8

6:15 am-4:50 pm

1 stop9h 35m

Washington, D.C. Dulles Intl

Mon 1/12

9:05 am-5:35 pm

1 stop9h 30m

$367

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 10/23

6:00 am-11:31 am

1 stop4h 31m

Washington, D.C. Dulles Intl

Sat 10/25

9:00 am-1:27 pm

1 stop5h 27m

$367

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 11/27

10:40 am-6:26 pm

1 stop6h 46m

Washington, D.C. Dulles Intl

Sat 11/29

7:01 am-1:28 pm

1 stop7h 27m

$368

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Mon 11/10

6:53 pm-12:18 am

1 stop4h 25m

Washington, D.C. Dulles Intl

Fri 11/14

5:59 pm-11:46 pm

1 stop6h 47m

$378

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Fri 11/7

11:55 am-11:30 pm

2 stops10h 35m

Washington, D.C. Dulles Intl

Mon 11/10

1:50 pm-8:55 pm

1 stop8h 05m

$383

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 22 results

Best time to book a flight from Hobby to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Hobby 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 Hobby Airport to Washington, D.C. Dulles Intl Airport

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

To ensure you get the cheapest price possible for a flight from Houston Hobby Airport 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 Hobby Airport to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 Hobby Airport to Washington, D.C. Dulles Intl Airport in the afternoon. By choosing this option you can save up to 9% on the cost of your flight, compared to a flight in the morning.

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

Reviews of airlines servicing Dulles Intl

Get a feel of what it's like to fly with United Airlines, American Airlines, and Spirit Airlines from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,925 reviews

Reviews

1 / 20

8.0

Excellent

Mignon,Nov 2024

IAH - LGA

Good boarding process. (Nice to be able to buy Group 2 boarding option.) Plane was clean. Tried to avoid full flight by flying on Saturday, but plane was full anyway. Gate area in Houston should have charging options. Should be a lounge for people with American Express Platinum Card in Houston Airport.

United Airlines

7.4

Good

8,925 reviews

United Airlines

7.4

Good

8,925 reviews

Reviews

1 / 20

8.0

Excellent

Mignon,Nov 2024

IAH - LGA

American Airlines

7.2

Good

10,000 reviews

United Airlines

7.4

Good

8,925 reviews

Reviews

1 / 20

8.0

Excellent

Mignon,Nov 2024

IAH - LGA

Spirit Airlines

6.3

Okay

8,022 reviews

United Airlines

7.4

Good

8,925 reviews

Reviews

1 / 20

8.0

Excellent

Mignon,Nov 2024

IAH - LGA

Frontier

5.8

Fair

3,174 reviews

United Airlines

7.4

Good

8,925 reviews

Reviews

1 / 20

8.0

Excellent

Mignon,Nov 2024

IAH - LGA

Related info for your journey

How long is the flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport?
For as low as $337, Delta can have you in Washington, D.C. Dulles Intl Airport from Houston Hobby Airport in 4h 31m. Houston Hobby Airport and Washington, D.C. Dulles Intl Airport are separated by a distance of 1199 mi.
What are the cheapest airlines flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport round-trip?
Flying on Spirit Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $54. Additional round-trip tickets that might be worth considering are offered by Frontier and United Airlines, with the lowest prices starting at $175 and $231, respectively. Spirit Airlines is currently priced 84% below the average price you’ll pay for this route.
Can I find deals for flights from Hobby to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Hobby to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Hobby to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hobby to Dulles Intl.
Can I find deals for business class flights from Hobby to Dulles Intl?
Yes. Cheapflights offers flight deals from Hobby 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 Hobby Airport to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 4 airlines flying from Hobby to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$54	Average$264	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$175	Average$235	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$231	Average$385	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$288	Average$343	FlexibilityNo cancel fee	On-time71%

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$150+ Cheap flights from Hobby (HOU) 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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Hobby to Dulles Intl with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

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

Cheap flight deals from Hobby to Dulles Intl

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Find flight deals from Hobby to Dulles Intl

Cheapest flights from Hobby to Dulles IntlExplore the most affordable flight options available from Hobby to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2025.

Explore the most affordable flight options available from Hobby to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Best time to book a flight from Hobby to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Hobby with our price prediction graph.

Cheapflights Insights

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

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

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

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

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

Reviews of airlines servicing Dulles Intl

Related info for your journey

Find useful and relevant information for your journey from Hobby to Dulles Intl. 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 Houston Hobby Airport to Washington, D.C. Dulles Intl Airport?

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

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

How can I find direct flights from Hobby to Dulles Intl?

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

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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Alternative routes for Hobby to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Hobby to Dulles Intl

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Cheapest flights from Hobby to Dulles Intl
Explore the most affordable flight options available from Hobby to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2025.