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Dulles Intl

$461+ Cheap flights from Cardiff (CWL) 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — IAD
Aug 19 — Aug 261
Wed 8/19
Wed 8/26
1 adult, Economy
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Cheap flight deals from Cardiff to Dulles Intl

Cheapest flights from Cardiff to Dulles Intl
Explore the most affordable flight options available from Cardiff to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 20, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1111:15 pm
CWL
-
IAD
2 stops40h 30m
Multiple Airlines
Tue 9/85:15 pm
IAD
-
CWL
1 stop25h 10m
Multiple Airlines
Deal found 7/19$899
This Kiwi.com deal was found by Cheapflights users on 7/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/302:45 pm
CWL
-
IAD
2 stops29h 25m
Multiple Airlines
Sun 9/65:15 pm
IAD
-
CWL
1 stop23h 30m
Multiple Airlines
Deal found 7/16$926
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Thu 8/2011:35 am
CWL
-
IAD
1 stop28h 10m
Multiple Airlines
Mon 8/245:15 pm
IAD
-
CWL
1 stop24h 35m
Multiple Airlines
Deal found 7/20$928
This Delta deal was found by Cheapflights users on 7/16. 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.
Sun 8/309:50 am
CWL
-
IAD
2 stops16h 05m
Delta
Sun 9/65:47 pm
IAD
-
CWL
2 stops17h 58m
Delta
Deal found 7/16$945
This Expedia deal was found by Cheapflights users on 7/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/119:45 am
CWL
-
IAD
1 stop10h 50m
KLM
Tue 9/85:40 pm
IAD
-
CWL
1 stop10h 35m
KLM
Deal found 7/19$1,012
This Virgin Atlantic deal was found by Cheapflights users on 7/20. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:15 pm
CWL
-
IAD
2 stops35h 11m
Virgin Atlantic
Mon 8/245:25 pm
IAD
-
CWL
2 stops18h 20m
Virgin Atlantic
Deal found 7/20$1,084
This KLM deal was found by Cheapflights users on 7/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:15 pm
CWL
-
IAD
1 stop27h 20m
KLM
Tue 8/115:40 pm
IAD
-
CWL
1 stop10h 35m
KLM
Deal found 7/17$1,114
This Air France deal was found by Cheapflights users on 7/17. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:15 pm
CWL
-
IAD
1 stop27h 20m
Air France
Tue 8/117:19 pm
IAD
-
CWL
2 stops16h 26m
Air France
Deal found 7/17$1,118
This Virgin Atlantic deal was found by Cheapflights users on 7/19. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/169:50 am
CWL
-
IAD
2 stops19h 44m
Virgin Atlantic
Sun 8/235:40 pm
IAD
-
CWL
1 stop18h 05m
Virgin Atlantic
Deal found 7/19$1,119

Find flight deals from Cardiff to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) 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 July 20, 2026.

Round-trip from

$899
(Kiwi.com)

One-way from

$461
(Kiwi.com)
From Cardiff Wales to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Cardiff Wales to Washington, D.C. Dulles Intl
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Cardiff 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 July 20, 2026.
Use the filters below to find and compare flights from Cardiff to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 8/20

11:35 am-10:45 am

1 stop28h 10m

Washington, D.C. Dulles Intl

Mon 8/24

5:15 pm-10:50 pm

1 stop24h 35m

$928
Quickest round-trip

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sun 8/30

9:50 am-3:35 pm

1 stop10h 45m

Washington, D.C. Dulles Intl

Sun 9/6

5:40 pm-9:15 am

1 stop10h 35m

$935

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sun 8/30

9:50 am-8:55 pm

2 stops16h 05m

Washington, D.C. Dulles Intl

Sun 9/6

5:47 pm-4:45 pm

2 stops17h 58m

$945

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Tue 8/11

9:45 am-12:34 am

2 stops19h 49m

Washington, D.C. Dulles Intl

Tue 9/8

12:25 pm-9:15 am

2 stops15h 50m

$1,017

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 8/20

5:15 pm-11:26 pm

2 stops35h 11m

Washington, D.C. Dulles Intl

Mon 8/24

5:25 pm-4:45 pm

2 stops18h 20m

$1,084

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Tue 8/4

5:15 pm-3:35 pm

1 stop27h 20m

Washington, D.C. Dulles Intl

Tue 8/11

5:40 pm-9:15 am

1 stop10h 35m

$1,114

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sun 8/16

9:50 am-12:34 am

2 stops19h 44m

Washington, D.C. Dulles Intl

Sun 8/23

5:40 pm-4:45 pm

1 stop18h 05m

$1,119

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Tue 8/4

9:45 am-11:26 pm

2 stops18h 41m

Washington, D.C. Dulles Intl

Tue 8/11

7:19 pm-4:45 pm

2 stops16h 26m

$1,123

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sun 8/16

9:50 am-11:21 pm

2 stops18h 31m

Washington, D.C. Dulles Intl

Sun 8/23

7:26 pm-4:45 pm

2 stops16h 19m

$1,148

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 9/3

11:35 am-6:10 pm

2 stops35h 35m

Washington, D.C. Dulles Intl

Mon 9/7

7:00 pm-10:15 am

2 stops58h 15m

$1,187

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

Best time to book a flight from Cardiff to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Cardiff 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.

Related info for your journey

Find useful and relevant information for your journey from Cardiff to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Cardiff to Washington, D.C. Dulles Intl?

    Cardiff Wales (CWL) is the airport you will fly out of if you book a flight from Cardiff to Washington, D.C. Dulles Intl. You should not have trouble finding flights to Washington, D.C. Dulles Intl from Cardiff Wales; the airport handles an average of 0 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Cardiff airport to Washington, D.C. Dulles Intl. It is only a 9.1 mi journey to Cardiff Wales (CWL) from Cardiff’s city center.

  • How long is the flight from Cardiff to Washington, D.C. Dulles Intl Airport?

    Airlines like Delta fly from Cardiff to Washington, D.C. Dulles Intl Airport in about 16h 05m. The time it takes to get you to your destination can typically vary by up to . The distance between Cardiff and Washington, D.C. Dulles Intl Airport is about 3548 mi.

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

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

  • How can I find direct flights from Cardiff to Dulles Intl?

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

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

    Yes. Cheapflights offers flight deals from Cardiff 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.

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
Arlington
Tysons
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Manassas
Fredericksburg
Falls Church
Hanover
Laurel
Sterling
Clinton
Hunt Valley
Cordova

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Alternative routes for Cardiff to Dulles Intl

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