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Cheap flights from Washington, D.C. Dulles Intl Airport to Cardiff from £578

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — CWL
11 Mar — 18 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dulles Intl to Cardiff

Enter your travel dates to find the best prices.

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 9 February 2026.

Mon 23/319:05
IAD
-
CWL
1 stop17h 50m
Virgin Atlantic
Mon 30/309:45
CWL
-
IAD
1 stop10h 50m
Virgin Atlantic
Deal found 7/2£578
Thu 27/817:40
IAD
-
CWL
1 stop10h 35m
Air Europa
Sun 6/909:50
CWL
-
IAD
1 stop10h 45m
Air Europa
Deal found 7/2£588
Wed 12/818:10
IAD
-
CWL
1 stop10h 05m
Delta
Wed 26/809:45
CWL
-
IAD
1 stop10h 50m
Delta
Deal found 7/2£589
Wed 6/512:45
IAD
-
CWL
2 stops15h 30m
KLM
Wed 20/517:15
CWL
-
IAD
1 stop27h 20m
KLM
Deal found 7/2£622
Wed 25/319:59
IAD
-
CWL
2 stops16h 56m
Delta
Wed 1/409:45
CWL
-
IAD
1 stop10h 50m
Delta
Deal found 8/2£632
Wed 6/520:20
IAD
-
CWL
2 stops21h 05m
Multiple Airlines
Wed 20/523:50
CWL
-
IAD
3 stops25h 39m
Multiple Airlines
Deal found 7/2£645
Wed 25/319:59
IAD
-
CWL
2 stops16h 56m
Multiple Airlines
Wed 1/409:45
CWL
-
IAD
2 stops18h 56m
Multiple Airlines
Deal found 8/2£668
Thu 27/820:30
IAD
-
CWL
3 stops20h 50m
Multiple Airlines
Sun 6/917:40
CWL
-
IAD
3 stops31h 55m
Multiple Airlines
Deal found 7/2£676

Find 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 9 February 2026.

Round-trip from

£578
Virgin Atlantic
  • Virgin Atlantic
  • 23/3-30/3
  • 2 total stops
  • 28h 40m total
  • Washington, D.C. to Cardiff
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 9 February 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 23/3

19:05-16:55

1 stop17h 50m

Cardiff Wales

Mon 30/3

09:45-15:35

1 stop10h 50m

£578

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 6/5

12:45-09:15

2 stops15h 30m

Cardiff Wales

Wed 20/5

17:15-15:35

1 stop27h 20m

£622

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 25/3

19:59-16:55

2 stops16h 56m

Cardiff Wales

Wed 1/4

09:45-15:35

1 stop10h 50m

£632

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 6/5

20:20-22:25

2 stops21h 05m

Cardiff Wales

Wed 20/5

23:50-20:29

2 stops25h 39m

£645

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 25/3

19:59-16:55

2 stops16h 56m

Cardiff Wales

Wed 1/4

09:45-23:41

2 stops18h 56m

£668

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 25/3

19:05-09:50

1 stop10h 45m

Cardiff Wales

Wed 1/4

09:45-15:35

1 stop10h 50m

£753

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Mon 23/3

20:40-09:50

3 stops33h 10m

Cardiff Wales

Mon 30/3

17:15-19:20

3 stops31h 05m

£784

Flights are sorted by cheapest return flights first.

Deals found on 7/2

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 return 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?

    Located just 9.1 mi from the city center, Cardiff Wales is the airport most travelers will use when flying to Cardiff from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Cardiff Wales (CWL) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 0 different airlines.

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

    Departing from Washington, D.C. Dulles Intl Airport to Cardiff will take you 15h 30m. Washington, D.C. Dulles Intl Airport and Cardiff are separated by a distance of 3548 mi. This flight may include one or multiple 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 holiday 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

Travelling to a place near Cardiff?

Book flights to Cardiff if you plan to visit one of these locations
Barry
Bridgend

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