HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$119+ 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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — IAD
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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.

Cheap 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 February 3, 2026.

This Delta deal was found by Cheapflights users on 2/2. 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.
Thu 4/96:00 am
HOU
-
IAD
1 stop7h 39m
Delta
Mon 4/135:27 pm
IAD
-
HOU
1 stop6h 39m
Delta
Deal found 2/2$237
This American Airlines deal was found by Cheapflights users on 2/1. 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 2/2810:13 am
HOU
-
IAD
1 stop11h 40m
American Airlines
Sat 3/76:00 am
IAD
-
HOU
1 stop10h 51m
American Airlines
Deal found 2/1$287
This Delta deal was found by Cheapflights users on 2/3. 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 2/245:19 pm
HOU
-
IAD
1 stop6h 02m
Delta
Wed 2/256:00 am
IAD
-
HOU
1 stop5h 01m
Delta
Deal found 2/3$303
This KAYAK deal was found by Cheapflights users on 2/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/111:16 pm
HOU
-
IAD
1 stop4h 41m
Delta
Tue 5/128:05 am
IAD
-
HOU
1 stop5h 06m
Delta
Deal found 2/2$312
This Delta deal was found by Cheapflights users on 2/2. 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.
Wed 4/156:00 am
HOU
-
IAD
1 stop4h 46m
Delta
Sun 4/196:00 am
IAD
-
HOU
1 stop4h 51m
Delta
Deal found 2/2$347
This Sun Country Air deal was found by Cheapflights users on 1/31. 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.
Sun 7/55:36 pm
HOU
-
IAD
1 stop22h 51m
Sun Country Air
Sat 8/812:58 pm
IAD
-
HOU
1 stop28h 31m
Sun Country Air
Deal found 1/31$355
This Delta deal was found by Cheapflights users on 1/31. 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.
Wed 4/15:27 pm
HOU
-
IAD
2 stops18h 12m
Delta
Tue 4/147:06 am
IAD
-
HOU
1 stop10h 22m
Delta
Deal found 1/31$359
This Cheapflightsfares deal was found by Cheapflights users on 2/1. 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.
Thu 5/147:12 pm
HOU
-
IAD
1 stop15h 32m
Sun Country Air
Sun 5/1712:49 pm
IAD
-
HOU
1 stop7h 10m
Sun Country Air
Deal found 2/1$363
This Southwest deal was found by Cheapflights users on 1/31. 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.
Sat 4/118:15 am
HOU
-
IAD
2 stops13h 40m
Southwest
Tue 4/146:20 am
IAD
-
HOU
1 stop9h 00m
Southwest
Deal found 1/31$366
This Sun Country Air deal was found by Cheapflights users on 2/2. 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 5/218:06 pm
HOU
-
IAD
1 stop14h 43m
Sun Country Air
Sun 5/2412:49 pm
IAD
-
HOU
1 stop22h 36m
Sun Country Air
Deal found 2/2$375
This Delta deal was found by Cheapflights users on 1/31. 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 3/315:27 pm
HOU
-
IAD
2 stops18h 12m
Delta
Tue 4/147:06 am
IAD
-
HOU
1 stop10h 22m
Delta
Deal found 1/31$379

Find flight deals from Hobby to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Hobby (HOU) to Dulles Intl (IAD). 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 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$237
(Delta)

One-way from

$119
(Delta)

Popular in

December

Cheapest in

October

Average price

$380
Provider with most accurate pricing for Houston Hobby-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Houston Hobby-Washington, D.C. Dulles Intl flights.
Search Deals
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. 9% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Hobby to Dulles Intl 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 3, 2026.
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

Hobby

Fly to

Dulles Intl

Route

Depart

Return

Price

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 5/12

5:10 pm-12:46 am

1 stop6h 36m

Washington, D.C. Dulles Intl

Wed 5/13

10:11 am-4:09 pm

1 stop6h 58m

$237

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 2/24

5:19 pm-12:21 am

1 stop6h 02m

Washington, D.C. Dulles Intl

Wed 2/25

6:00 am-10:01 am

1 stop5h 01m

$303

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 2/24

1:06 pm-8:45 pm

1 stop6h 39m

Washington, D.C. Dulles Intl

Sat 2/28

6:00 am-10:01 am

1 stop5h 01m

$303

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 4/30

6:00 am-2:04 pm

1 stop7h 04m

Washington, D.C. Dulles Intl

Sun 5/3

5:27 pm-11:05 pm

1 stop6h 38m

$347

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Fri 4/10

5:27 pm-12:27 am

1 stop6h 00m

Washington, D.C. Dulles Intl

Tue 4/14

6:00 am-9:51 am

1 stop4h 51m

$347

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Wed 4/15

5:23 pm-12:42 am

1 stop6h 19m

Washington, D.C. Dulles Intl

Sun 4/19

6:00 am-9:51 am

1 stop4h 51m

$347

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Sat 4/11

8:15 am-10:55 pm

2 stops13h 40m

Washington, D.C. Dulles Intl

Tue 4/14

6:20 am-2:20 pm

1 stop9h 00m

$366

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Wed 4/1

5:27 pm-12:39 pm

2 stops18h 12m

Washington, D.C. Dulles Intl

Thu 4/16

6:00 am-9:51 am

1 stop4h 51m

$383

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Wed 4/1

5:27 pm-12:39 pm

2 stops18h 12m

Washington, D.C. Dulles Intl

Wed 4/15

12:42 pm-4:28 pm

1 stop4h 46m

$383

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 3/31

5:27 pm-9:10 am

1 stop14h 43m

Washington, D.C. Dulles Intl

Tue 4/14

6:00 am-4:28 pm

1 stop11h 28m

$387

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 21 results
1
2
3

Compare providers for flights from Hobby to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Hobby to Dulles Intl in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Houston Hobby Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Houston Hobby Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Houston Hobby Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Houston Hobby Airport-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Houston Hobby Airport-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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?

Use this chart to determine the optimal time to book a round-trip flight from Hobby to Dulles Intl. Price data was last updated on January 30, 2026.

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, November is the cheapest month in which you can book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport (average of $130). Flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $269). 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.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated February 3, 2026.
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
9,236 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,236 reviews
United Airlines
7.4
Good
9,236 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.2
Good
11,218 reviews
United Airlines
7.4
Good
9,236 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Spirit Airlines
6.3
Okay
8,407 reviews
United Airlines
7.4
Good
9,236 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Frontier
5.7
Fair
3,051 reviews
United Airlines
7.4
Good
9,236 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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?

    For as low as $237, Delta can have you in Washington, D.C. Dulles Intl Airport from Houston Hobby Airport in 6h 36m. 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 $80. Additional round-trip tickets that might be worth considering are offered by Frontier and United Airlines, with the lowest prices starting at $144 and $235, respectively. Spirit Airlines is currently priced 76% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $76. United Airlines flights start at $128 while deals on American Airlines start at $144 one-way.

  • 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, November is the cheapest month in which you can book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport (average of $130). Flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $269). 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

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

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Upper Marlboro
Manassas
Largo
Bowie
McLean
Clinton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Hobby to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Hobby to Reagan-National flights
George Bush Intcntl to Reagan-National flights
George Bush Intcntl to Dulles Intl flights
Hobby to Baltimore flights
George Bush Intcntl to Baltimore flights

Top 4 airlines flying from Hobby to Dulles Intl

Discover the top 4 airlines that operate flights from Hobby to Dulles Intl. 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 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$80Average$185FlexibilityNo cancel feeOn-time65%
FrontierCheapest$144Average$223FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$235Average$377FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$343FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.