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Dulles Intl

$145+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — IAD
Sep 1 — Sep 81
Tue 9/1
Tue 9/8
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 August 2, 2026.

This Delta deal was found by Cheapflights users on 8/2. 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.
Mon 10/56:00 am
HOU
-
IAD
1 stop4h 30m
Delta
Wed 10/216:00 am
IAD
-
HOU
1 stop5h 08m
Delta
Deal found 8/2$237
This Delta deal was found by Cheapflights users on 7/30. 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 9/911:01 am
HOU
-
IAD
1 stop5h 10m
Delta
Mon 9/148:08 am
IAD
-
HOU
1 stop6h 10m
Delta
Deal found 7/30$257
This Delta deal was found by Cheapflights users on 7/31. 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.
Thu 10/155:28 pm
HOU
-
IAD
1 stop6h 14m
Delta
Sat 10/176:12 pm
IAD
-
HOU
1 stop5h 51m
Delta
Deal found 7/31$308
This Delta deal was found by Cheapflights users on 8/2. 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.
Sun 10/46:00 am
HOU
-
IAD
1 stop4h 30m
Delta
Wed 10/216:00 am
IAD
-
HOU
1 stop5h 08m
Delta
Deal found 8/2$317
This Delta deal was found by Cheapflights users on 7/30. 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 9/110:50 am
HOU
-
IAD
1 stop4h 52m
Delta
Sun 9/66:00 am
IAD
-
HOU
1 stop4h 50m
Delta
Deal found 7/30$327
This Delta deal was found by Cheapflights users on 7/29. 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 8/2010:50 am
HOU
-
IAD
1 stop4h 52m
Delta
Mon 8/245:47 pm
IAD
-
HOU
1 stop5h 18m
Delta
Deal found 7/29$334
This Delta deal was found by Cheapflights users on 7/30. 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 11/185:30 pm
HOU
-
IAD
1 stop6h 09m
Delta
Sat 11/215:00 pm
IAD
-
HOU
1 stop7h 13m
Delta
Deal found 7/30$348
This Delta deal was found by Cheapflights users on 7/31. 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.
Sun 10/255:28 pm
HOU
-
IAD
1 stop6h 14m
Delta
Wed 10/2810:14 am
IAD
-
HOU
1 stop7h 19m
Delta
Deal found 7/31$358
This Delta deal was found by Cheapflights users on 7/30. 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 9/116:00 am
HOU
-
IAD
1 stop7h 11m
Delta
Mon 9/146:00 am
IAD
-
HOU
1 stop5h 00m
Delta
Deal found 7/30$360
This Delta deal was found by Cheapflights users on 8/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:30 pm
HOU
-
IAD
1 stop6h 09m
Delta
Thu 11/265:00 pm
IAD
-
HOU
1 stop7h 13m
Delta
Deal found 8/1$361
This American Airlines deal was found by Cheapflights users on 7/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:04 am
HOU
-
IAD
1 stop7h 14m
American Airlines
Sun 9/137:35 pm
IAD
-
HOU
1 stop5h 15m
American Airlines
Deal found 7/31$362

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 August 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$237
(Delta)

One-way from

$145
(Delta)

Popular in

February

Cheapest in

October

Average price

$403
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. 21% potential increase in price ($118 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 August 2, 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
Quickest round-trip

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 8/25

10:50 am-4:42 pm

1 stop4h 52m

Washington, D.C. Dulles Intl

Tue 9/1

6:00 am-9:50 am

1 stop4h 50m

$289

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Sat 9/5

5:20 pm-12:34 am

1 stop6h 14m

Washington, D.C. Dulles Intl

Tue 9/15

6:07 pm-10:39 pm

1 stop5h 32m

$289

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Wed 9/9

6:00 am-2:11 pm

1 stop7h 11m

Washington, D.C. Dulles Intl

Mon 9/14

8:08 am-1:18 pm

1 stop6h 10m

$289

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Sat 9/12

5:26 pm-12:41 am

1 stop6h 15m

Washington, D.C. Dulles Intl

Mon 9/14

6:00 am-10:00 am

1 stop5h 00m

$289

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Mon 10/19

3:09 pm-9:21 pm

1 stop5h 12m

Washington, D.C. Dulles Intl

Fri 10/23

8:03 am-2:07 pm

1 stop7h 04m

$317

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 9/1

10:50 am-4:42 pm

1 stop4h 52m

Washington, D.C. Dulles Intl

Sun 9/6

6:00 am-9:50 am

1 stop4h 50m

$327

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 9/24

2:25 pm-9:44 pm

1 stop6h 19m

Washington, D.C. Dulles Intl

Mon 9/28

8:08 am-1:18 pm

1 stop6h 10m

$358

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 9/3

10:50 am-4:42 pm

1 stop4h 52m

Washington, D.C. Dulles Intl

Mon 9/7

6:00 am-9:50 am

1 stop4h 50m

$384

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 8/20

10:50 am-6:28 pm

1 stop6h 38m

Washington, D.C. Dulles Intl

Sun 8/23

6:00 am-12:16 pm

1 stop7h 16m

$418

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Mon 8/31

1:13 pm-8:05 pm

1 stop5h 52m

Washington, D.C. Dulles Intl

Mon 9/7

6:00 am-9:50 am

1 stop4h 50m

$418

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 23 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 August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*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

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

Currently, October is the cheapest month in which you can book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport (average of $291). Flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $744). 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.

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 $232 and $547 in October.
The cheapest round-trip price found within the last 5 days was $237 on Delta (Oct 5-Oct 22).

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 August 2, 2026.
Get a feel of what it's like to fly with United Airlines and Frontier 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
10,058 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Overall

7.4

Comfort

7.3

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
10,058 reviews
United Airlines
7.4
Good
10,058 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Overall

7.4

Comfort

7.3

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
5.6
Fair
2,740 reviews
United Airlines
7.4
Good
10,058 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Overall

7.4

Comfort

7.3

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 $289, Delta can have you in Washington, D.C. Dulles Intl Airport from Houston Hobby Airport in 4h 52m. 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 Frontier is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $128. Another option worth looking into is United Airlines, starting at $243 round trip. Frontier is currently priced 71% 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 $142 while deals on Delta start at $187 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, October is the cheapest month in which you can book a flight from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport (average of $291). Flying from Houston Hobby Airport to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $744). 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
Owings Mills
Arlington
Tysons
Springfield
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Fredericksburg
Falls Church
Hanover
Laurel
Sterling
Clinton
Oxon Hill
Hunt Valley
Woodbridge

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 Baltimore flights
George Bush Intcntl to Baltimore flights
Hobby to Reagan-National flights
George Bush Intcntl to Dulles Intl flights
George Bush Intcntl to Reagan-National flights

Top 2 airlines flying from Hobby to Dulles Intl

Discover the top 2 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 August 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$217FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$243Average$451FlexibilityNo cancel feeOn-time69%

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