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Cardiff

$281+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — CWL
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
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 July 1, 2025.

Round-trip from

$692
(Kiwi.com)

One-way from

$496
(KLM)
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 July 1, 2025.

This Vueling Global deal was found by Cheapflights users on 6/29. 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 Vueling Global is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/244:35 pmIAD - CWL
2 stops23h 15mMultiple Airlines
Mon 11/34:40 pmCWL - IAD
2 stops28h 50mMultiple Airlines
Deal found 6/29$729
This Virgin Atlantic deal was found by Cheapflights users on 6/29. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/125:35 pmIAD - CWL
1 stop18h 20mVirgin Atlantic
Sun 11/165:25 pmCWL - IAD
1 stop27h 20mVirgin Atlantic
Deal found 6/29$827
This Delta deal was found by Cheapflights users on 6/29. 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.
Wed 11/123:00 pmIAD - CWL
2 stops20h 55mDelta
Sun 11/1610:20 amCWL - IAD
2 stops18h 47mDelta
Deal found 6/29$842
This KLM deal was found by Cheapflights users on 6/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:35 pmIAD - CWL
1 stop18h 20mKLM
Mon 11/35:25 pmCWL - IAD
1 stop27h 20mKLM
Deal found 6/30$927
This FlightHub deal was found by Cheapflights users on 6/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/214:30 pmIAD - CWL
2 stops43h 15mITA Airways
Sat 9/279:45 amCWL - IAD
2 stops33h 55mITA Airways
Deal found 6/30$1,089

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 July 1, 2025.
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

Wed 8/13

5:50 pm-7:40 pm

2 stops20h 50m

Cardiff Wales

Wed 8/20

9:15 am-8:50 pm

2 stops16h 35m

$783

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 8/20

5:25 pm-9:15 am

1 stop10h 50m

Cardiff Wales

Wed 8/27

9:50 am-3:35 pm

1 stop10h 45m

$827

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 8/13

6:00 am-9:15 am

2 stops22h 15m

Cardiff Wales

Wed 8/20

9:50 am-3:35 pm

1 stop10h 45m

$922

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 9/18

12:08 pm-9:15 am

2 stops16h 07m

Cardiff Wales

Thu 9/25

9:50 am-3:35 pm

1 stop10h 45m

$935

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Sun 9/21

4:30 pm-4:45 pm

2 stops43h 15m

Cardiff Wales

Sat 9/27

9:45 am-2:40 pm

2 stops33h 55m

$1,089

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Mon 8/11

10:20 pm-7:55 am

2 stops28h 35m

$281

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Sat 7/26

5:25 pm-4:50 pm

1 stop18h 25m

$496

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

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.

Reviews of airlines servicing Cardiff

Get insights into the airlines that provide service to Cardiff. 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 Cardiff. Reviews last updated July 1, 2025.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Cardiff, such as Delta, KLM, and Virgin Atlantic. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,366 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
654 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
ITA Airways
6.6
Okay
998 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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. 1 airline has flights to Cardiff Wales from Washington, D.C. Dulles Intl on a regular basis.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Cardiff round-trip?

    Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Cardiff is Virgin Atlantic. Our recent data shows that you can find tickets from as low as $827 on this airline. Additional options worth looking into are KLM and Delta, starting at $834 and $842 round-trip.

  • 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.

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

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Cardiff (average of $773). Flying from Washington, D.C. Dulles Intl Airport to Cardiff in June is currently the most expensive (average of $1,622). 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?

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Top airline flying from Dulles Intl to Cardiff

Discover the top airline that operate flights from Dulles Intl to Cardiff. 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 July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$740Average$791FlexibilityNo cancel feeOn-time75%

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