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Dulles Intl

$128+ 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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — IAD
Apr 18 — Apr 251
Sat 4/18
Sat 4/25
1 adult, Economy
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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 March 19, 2026.

This Delta deal was found by Cheapflights users on 3/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:27 pm
HOU
-
IAD
1 stop14h 43m
Delta
Sat 5/21:00 pm
IAD
-
HOU
1 stop11h 07m
Delta
Deal found 3/16$371
This Delta deal was found by Cheapflights users on 3/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:00 am
HOU
-
IAD
1 stop10h 29m
Delta
Wed 5/278:05 am
IAD
-
HOU
1 stop5h 06m
Delta
Deal found 3/18$381
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/146:44 pm
HOU
-
IAD
1 stop20h 12m
Allegiant Air
Sun 6/216:20 pm
IAD
-
HOU
2 stops25h 34m
Allegiant Air
Deal found 3/18$383
This Delta deal was found by Cheapflights users on 3/17. 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 4/146:00 am
HOU
-
IAD
1 stop4h 46m
Delta
Tue 4/2110:11 am
IAD
-
HOU
1 stop7h 17m
Delta
Deal found 3/17$391
This Delta deal was found by Cheapflights users on 3/17. 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.
Sat 4/116:00 am
HOU
-
IAD
1 stop4h 55m
Delta
Tue 4/145:27 pm
IAD
-
HOU
1 stop6h 41m
Delta
Deal found 3/17$405
This Sun Country Air deal was found by Cheapflights users on 3/14. 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 5/147:12 pm
HOU
-
IAD
1 stop15h 27m
Sun Country Air
Thu 5/2112:44 pm
IAD
-
HOU
1 stop23h 49m
Sun Country Air
Deal found 3/14$407
This American Airlines deal was found by Cheapflights users on 3/17. 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.
Tue 4/216:01 am
HOU
-
IAD
2 stops8h 22m
American Airlines
Sat 4/257:00 am
IAD
-
HOU
1 stop6h 12m
American Airlines
Deal found 3/17$410
This Delta deal was found by Cheapflights users on 3/14. 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.
Fri 5/85:02 pm
HOU
-
IAD
1 stop15h 56m
Delta
Tue 5/123:08 pm
IAD
-
HOU
1 stop8h 18m
Delta
Deal found 3/14$411
This Southwest deal was found by Cheapflights users on 3/19. 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 4/258:20 am
HOU
-
IAD
2 stops13h 35m
Southwest
Tue 4/284:30 pm
IAD
-
HOU
1 stop7h 55m
Southwest
Deal found 3/19$416
This Delta deal was found by Cheapflights users on 3/17. 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.
Sat 4/116:00 am
HOU
-
IAD
1 stop4h 55m
Delta
Mon 4/135:27 pm
IAD
-
HOU
1 stop6h 41m
Delta
Deal found 3/17$419
This Delta deal was found by Cheapflights users on 3/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:27 pm
HOU
-
IAD
1 stop14h 43m
Delta
Fri 5/112:37 pm
IAD
-
HOU
1 stop11h 30m
Delta
Deal found 3/16$422
This Cheapflightsfares deal was found by Cheapflights users on 3/16. 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 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 27m
Sun Country Air
Sun 5/1712:44 pm
IAD
-
HOU
1 stop7h 15m
Sun Country Air
Deal found 3/16$423

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 March 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$371
(Delta)

One-way from

$128
(Kiwi.com)

Popular in

February

Cheapest in

October

Average price

$437
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. 26% potential increase in price ($135 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 19, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 5/5

1:31 pm-12:42 am

1 stop10h 11m

Washington, D.C. Dulles Intl

Wed 5/13

8:05 am-4:09 pm

1 stop9h 04m

$411

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 5/14

6:00 am-12:51 am

1 stop17h 51m

Washington, D.C. Dulles Intl

Wed 5/20

3:08 pm-10:26 pm

1 stop8h 18m

$411

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Sat 5/2

6:15 am-4:25 pm

1 stop9h 10m

Washington, D.C. Dulles Intl

Sat 5/9

5:50 am-2:15 pm

1 stop9h 25m

$419

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 4/21

6:40 am-4:50 pm

1 stop9h 10m

Washington, D.C. Dulles Intl

Thu 4/23

5:55 am-2:25 pm

1 stop9h 30m

$419

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Sat 4/11

6:00 am-11:55 am

1 stop4h 55m

Washington, D.C. Dulles Intl

Thu 4/23

12:37 pm-11:07 pm

1 stop11h 30m

$428

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Sat 4/11

8:20 am-10:55 pm

2 stops13h 35m

Washington, D.C. Dulles Intl

Wed 4/15

4:30 pm-11:25 pm

1 stop7h 55m

$428

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 5/19

8:50 am-4:50 pm

1 stop7h 00m

Washington, D.C. Dulles Intl

Sun 5/24

6:10 am-5:30 pm

2 stops12h 20m

$439

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Wed 4/22

1:20 pm-11:40 pm

1 stop9h 20m

Washington, D.C. Dulles Intl

Sun 4/26

5:50 am-1:55 pm

2 stops9h 05m

$439

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 4/9

6:00 am-11:52 am

1 stop4h 52m

Washington, D.C. Dulles Intl

Thu 4/23

12:37 pm-11:07 pm

1 stop11h 30m

$468

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 8/20

6:00 am-2:44 pm

1 stop7h 44m

Washington, D.C. Dulles Intl

Sun 8/23

6:00 am-12:04 pm

1 stop7h 04m

$477

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/17

Showing 1-10 of 21 resultsSorted by cheapest first
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 March.
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 March 13, 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 60 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, May is the cheapest month in which you can book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport (average of $128). Flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $285). 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 March 19, 2026.
Get a feel of what it's like to fly with United Airlines,Spirit Airlines, andFrontier 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
9,440 reviews

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

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
9,440 reviews
United Airlines
7.4
Good
9,440 reviews

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

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
8,528 reviews
United Airlines
7.4
Good
9,440 reviews

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

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
3,024 reviews
United Airlines
7.4
Good
9,440 reviews

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

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 $419, Delta can have you in Washington, D.C. Dulles Intl Airport from Houston Hobby Airport in 9h 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 $235, respectively. Spirit Airlines is currently priced 78% 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 $75. 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, May is the cheapest month in which you can book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport (average of $128). Flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $285). 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
Owings Mills
Arlington
Springfield
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Fredericksburg
Largo
Bowie
Clinton
Towson
College Park
Cordova

Browse thousands of different options on Cheapflights for your next trip

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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.
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 3 airlines flying from Hobby to Dulles Intl

Discover the top 3 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 March 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$80Average$198FlexibilityNo cancel feeOn-time65%
FrontierCheapest$144Average$222FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$235Average$388FlexibilityNo cancel feeOn-time69%

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