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Dulles Intl

$152+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — IAD
Feb 17 — Feb 241
Tue 2/17
Tue 2/24
1 adult, Economy
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Cheap 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 January 18, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$303
(Delta)

One-way from

$152
(Delta)

Popular in

December

Cheapest in

October

Average price

$356
Provider with most accurate pricing for Houston Hobby-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Houston Hobby-Washington, D.C. Dulles Intl flights.
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From Houston Hobby to Washington, D.C. Dulles Intl
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One-way flight from Houston Hobby to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 10% potential increase in price ($40 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 18, 2026.

This Delta deal was found by Cheapflights users on 1/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/105:45 am
HOU
-
IAD
1 stop4h 59m
Delta
Wed 2/1110:08 am
IAD
-
HOU
1 stop7h 02m
Delta
Deal found 1/17$303
This Southwest deal was found by Cheapflights users on 1/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/106:30 am
HOU
-
IAD
2 stops8h 20m
Southwest
Wed 2/119:05 am
IAD
-
HOU
1 stop7h 20m
Southwest
Deal found 1/16$308
This Southwest deal was found by Cheapflights users on 1/18. 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.
Wed 2/186:30 am
HOU
-
IAD
2 stops8h 20m
Southwest
Sat 2/215:05 am
IAD
-
HOU
1 stop9h 00m
Southwest
Deal found 1/18$312
This American Airlines deal was found by Cheapflights users on 1/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/146:00 am
HOU
-
IAD
2 stops9h 16m
American Airlines
Sat 2/219:18 am
IAD
-
HOU
2 stops7h 33m
American Airlines
Deal found 1/17$314
This Delta deal was found by Cheapflights users on 1/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:25 am
HOU
-
IAD
1 stop5h 10m
Delta
Tue 3/106:01 am
IAD
-
HOU
1 stop5h 38m
Delta
Deal found 1/17$338
This Delta deal was found by Cheapflights users on 1/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:25 am
HOU
-
IAD
1 stop12h 12m
Delta
Mon 3/167:18 am
IAD
-
HOU
1 stop7h 10m
Delta
Deal found 1/15$340
This Southwest deal was found by Cheapflights users on 1/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/112:10 pm
HOU
-
IAD
1 stop6h 45m
Southwest
Mon 2/235:30 am
IAD
-
HOU
2 stops10h 50m
Southwest
Deal found 1/16$344
This Delta deal was found by Cheapflights users on 1/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/181:06 pm
HOU
-
IAD
1 stop4h 31m
Delta
Fri 2/206:00 am
IAD
-
HOU
1 stop5h 01m
Delta
Deal found 1/17$359
This American Airlines deal was found by Cheapflights users on 1/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1810:13 am
HOU
-
IAD
2 stops9h 17m
American Airlines
Fri 2/205:52 pm
IAD
-
HOU
1 stop7h 06m
American Airlines
Deal found 1/17$364
This Southwest deal was found by Cheapflights users on 1/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2011:00 am
HOU
-
IAD
2 stops11h 10m
Southwest
Sat 2/215:05 am
IAD
-
HOU
1 stop9h 00m
Southwest
Deal found 1/17$369

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 January 18, 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

Sat 2/14

5:25 am-11:35 am

1 stop5h 10m

Washington, D.C. Dulles Intl

Sat 2/21

6:00 am-10:01 am

1 stop5h 01m

$303

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Wed 2/11

11:09 am-6:21 pm

1 stop6h 12m

Washington, D.C. Dulles Intl

Wed 2/18

7:15 am-12:20 pm

1 stop6h 05m

$303

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Wed 2/18

6:30 am-3:50 pm

2 stops8h 20m

Washington, D.C. Dulles Intl

Sat 2/21

5:05 am-3:50 pm

2 stops11h 45m

$317

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 3/3

5:25 am-11:35 am

1 stop5h 10m

Washington, D.C. Dulles Intl

Tue 3/10

6:01 am-10:39 am

1 stop5h 38m

$338

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 3/3

5:25 am-6:37 pm

1 stop12h 12m

Washington, D.C. Dulles Intl

Mon 3/16

7:18 am-1:28 pm

1 stop7h 10m

$340

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Fri 2/20

1:45 pm-11:10 pm

1 stop8h 25m

Washington, D.C. Dulles Intl

Sat 2/21

5:05 am-1:05 pm

1 stop9h 00m

$364

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 4/14

5:20 pm-12:28 am

1 stop6h 08m

Washington, D.C. Dulles Intl

Sat 4/18

6:28 pm-10:44 pm

1 stop5h 16m

$373

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Wed 3/18

11:44 am-6:33 pm

1 stop5h 49m

Washington, D.C. Dulles Intl

Mon 3/23

10:06 am-4:36 pm

1 stop7h 30m

$373

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Wed 6/3

5:35 pm-12:09 am

1 stop5h 34m

Washington, D.C. Dulles Intl

Sat 7/4

7:00 am-12:10 pm

1 stop6h 10m

$373

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 3/5

5:19 pm-12:21 am

1 stop6h 02m

Washington, D.C. Dulles Intl

Mon 3/9

3:35 pm-10:42 pm

1 stop8h 07m

$373

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/17

Showing 1-10 of 24 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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust 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 CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Houston Hobby Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. CheapOair >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 CheapOair the most. CheapOair 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 9, 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 January 18, 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
9,176 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

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
9,176 reviews
United Airlines
7.4
Good
9,176 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

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
11,159 reviews
United Airlines
7.4
Good
9,176 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

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
8,345 reviews
United Airlines
7.4
Good
9,176 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

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
3,058 reviews
United Airlines
7.4
Good
9,176 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

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 $303, Delta can have you in Washington, D.C. Dulles Intl Airport from Houston Hobby Airport in 5h 10m. Houston Hobby Airport and Washington, D.C. Dulles Intl Airport are separated by a distance of 1199 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 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 $240, respectively. Spirit Airlines is currently priced 75% 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
Hanover
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Largo
Bowie
McLean
Clinton
Herndon

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
Hobby to Baltimore flights
George Bush Intcntl to Dulles Intl flights
George Bush Intcntl to Reagan-National 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 January 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$80Average$185FlexibilityNo cancel feeOn-time65%
FrontierCheapest$144Average$223FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$240Average$377FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$343FlexibilityNo cancel feeOn-time71%

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