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Cardiff

$358+ Cheap flights from Dulles Intl (IAD) to Cardiff (CWL)

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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — CWL
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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Cheap flight deals from Dulles Intl to Cardiff

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Cardiff (CWL). 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 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$749
(Vliegwinkel)

One-way from

$358
(Kiwi.com)
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Cardiff Wales flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Cardiff Wales flights.
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From Washington, D.C. Dulles Intl to Cardiff Wales
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One-way flight from Washington, D.C. Dulles Intl to Cardiff Wales
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Find flight deals from Dulles Intl to Cardiff

Cheapest flights from Dulles Intl to Cardiff
Explore the most affordable flight options available from Dulles Intl to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.

This Vliegwinkel 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/166:05 pm
IAD
-
CWL
1 stop17h 50m
Virgin Atlantic
Mon 3/25:15 pm
CWL
-
IAD
1 stop27h 50m
Virgin Atlantic
Deal found 1/15$749
This lastminute.com deal was found by Cheapflights users on 1/14. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/1512:24 pm
IAD
-
CWL
2 stops23h 21m
Virgin Atlantic
Tue 3/35:25 pm
CWL
-
IAD
1 stop27h 40m
Virgin Atlantic
Deal found 1/14$751
This Air France deal was found by Cheapflights users on 1/14. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/156:50 pm
IAD
-
CWL
1 stop17h 05m
Multiple Airlines
Tue 3/35:25 pm
CWL
-
IAD
1 stop27h 40m
Multiple Airlines
Deal found 1/14$753
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.
Mon 2/1612:35 pm
IAD
-
CWL
2 stops16h 15m
Delta
Mon 3/210:20 am
CWL
-
IAD
2 stops37h 17m
Delta
Deal found 1/15$762
This KLM deal was found by Cheapflights users on 1/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/412:40 pm
IAD
-
CWL
2 stops16h 10m
KLM
Wed 2/1810:20 am
CWL
-
IAD
2 stops19h 01m
KLM
Deal found 1/14$772
This Trip.com deal was found by Cheapflights users on 1/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/286:05 pm
IAD
-
CWL
1 stop10h 45m
Virgin Atlantic
Sat 3/75:25 pm
CWL
-
IAD
1 stop27h 40m
Virgin Atlantic
Deal found 1/14$784
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:35 pm
IAD
-
CWL
1 stop11h 15m
KLM
Mon 11/165:15 pm
CWL
-
IAD
1 stop27h 30m
KLM
Deal found 1/15$785
This KLM deal was found by Cheapflights users on 1/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/1612:18 pm
IAD
-
CWL
2 stops16h 32m
KLM
Mon 1/195:15 pm
CWL
-
IAD
1 stop27h 50m
KLM
Deal found 1/14$788
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1312:30 pm
IAD
-
CWL
2 stops16h 20m
Scandinavian Airlines
Mon 11/165:15 pm
CWL
-
IAD
1 stop27h 30m
Scandinavian Airlines
Deal found 1/15$792
This Expedia deal was found by Cheapflights users on 1/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:52 pm
IAD
-
CWL
2 stops56h 58m
KLM
Sat 3/75:25 pm
CWL
-
IAD
1 stop27h 40m
KLM
Deal found 1/14$844

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Cardiff 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 15, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Cardiff that are best for you.

Fly from

Dulles Intl

Fly to

Cardiff

Route

Depart

Return

Price

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Mon 2/16

6:05 pm-4:55 pm

1 stop17h 50m

Cardiff Wales

Mon 3/2

5:15 pm-4:05 pm

1 stop27h 50m

$749

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Sun 2/15

12:24 pm-4:45 pm

2 stops23h 21m

Cardiff Wales

Tue 3/3

5:25 pm-4:05 pm

1 stop27h 40m

$751

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Sun 2/15

6:50 pm-4:55 pm

1 stop17h 05m

Cardiff Wales

Tue 3/3

5:25 pm-4:05 pm

1 stop27h 40m

$753

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 2/4

12:40 pm-9:50 am

2 stops16h 10m

Cardiff Wales

Wed 2/18

5:25 pm-4:05 pm

1 stop27h 40m

$762

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Mon 2/16

6:05 pm-9:50 am

1 stop10h 45m

Cardiff Wales

Mon 3/2

10:20 am-7:09 pm

2 stops37h 49m

$762

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Sat 2/28

7:00 am-9:50 am

2 stops21h 50m

Cardiff Wales

Sat 3/7

10:20 am-12:21 am

2 stops19h 01m

$789

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Sat 2/28

7:52 pm-9:50 am

2 stops56h 58m

Cardiff Wales

Sat 3/7

5:25 pm-4:05 pm

1 stop27h 40m

$844

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 2/19

5:05 pm-10:00 pm

1 stop23h 55m

Cardiff Wales

Mon 2/23

11:30 pm-6:30 pm

2 stops24h 00m

$855

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 4/23

5:40 pm-9:15 am

1 stop10h 35m

Cardiff Wales

Sat 5/2

5:35 pm-3:35 pm

1 stop27h 00m

$863

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Sat 2/28

5:05 pm-8:55 pm

1 stop22h 50m

$358

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Showing 1-10 of 15 results
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Compare providers for flights from Dulles Intl to Cardiff

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 Dulles Intl to Cardiff in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 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 Washington, D.C. Dulles Intl Airport-Cardiff flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-Cardiff flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Cardiff flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Cardiff flights, Cheapflights users trust eDreams the most. eDreams 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 Washington, D.C. Dulles Intl Airport-Cardiff 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 Dulles Intl to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Dulles Intl 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 Dulles Intl to Cardiff. 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 into for flights to Cardiff from Washington, D.C. Dulles Intl?

    For a flight from Washington, D.C. Dulles Intl to Cardiff, you will be flying into Cardiff Wales. Cardiff Wales (CWL) is just 9.1 mi from the center of the city. Cardiff Wales is the only Cardiff airport and it handles 0 inbound flights from Washington, D.C. Dulles Intl per day. 0 airlines have flights to Cardiff Wales from Washington, D.C. Dulles Intl on a regular basis.

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

    For as low as $762, Virgin Atlantic can have you in Cardiff from Washington, D.C. Dulles Intl Airport in 16h 10m. The distance from Washington, D.C. Dulles Intl Airport to Cardiff is about 3548 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Cardiff 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

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