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Cardiff

$803+ Cheap flights from Washington, D.C. (WAS) to Cardiff (CWL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — CWL
Mar 1 — Mar 81
Sun 3/1
Sun 3/8
1 adult, Economy
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Find cheap flights from Washington, D.C. to Cardiff with Cheapflights

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Cheap flight deals from Washington, D.C. to Cardiff

Cheapest flights from Washington, D.C. to Cardiff
Explore the most affordable flight options available from Washington, D.C. to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 30, 2026.

This Delta deal was found by Cheapflights users on 1/29. 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 8/126:10 pm
IAD
-
CWL
1 stop10h 05m
Delta
Wed 8/269:45 am
CWL
-
IAD
1 stop10h 50m
Delta
Deal found 1/29$803
This Air France deal was found by Cheapflights users on 1/29. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/121:00 pm
BWI
-
CWL
2 stops15h 15m
Multiple Airlines
Wed 8/265:15 pm
CWL
-
BWI
2 stops28h 53m
Multiple Airlines
Deal found 1/29$817
This Delta deal was found by Cheapflights users on 1/28. 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 5/612:45 pm
IAD
-
CWL
2 stops15h 30m
Delta
Wed 5/279:45 am
CWL
-
IAD
1 stop10h 50m
Delta
Deal found 1/28$844
This Delta deal was found by Cheapflights users on 1/28. 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 5/610:05 am
DCA
-
CWL
2 stops18h 10m
Delta
Wed 5/279:45 am
CWL
-
DCA
2 stops18h 27m
Delta
Deal found 1/28$854
This KLM deal was found by Cheapflights users on 1/28. 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 5/612:45 pm
IAD
-
CWL
2 stops15h 30m
KLM
Wed 5/279:45 am
CWL
-
IAD
2 stops19h 24m
KLM
Deal found 1/28$854
This KLM deal was found by Cheapflights users on 1/28. 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 8/51:00 pm
BWI
-
CWL
2 stops15h 15m
KLM
Wed 8/129:45 am
CWL
-
BWI
2 stops17h 28m
KLM
Deal found 1/28$992
This Ovago deal was found by Cheapflights users on 1/28. 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.
Thu 8/135:40 pm
IAD
-
CWL
1 stop10h 35m
Scandinavian Airlines
Mon 8/175:15 pm
CWL
-
IAD
1 stop27h 20m
Scandinavian Airlines
Deal found 1/28$996
This Virgin Atlantic deal was found by Cheapflights users on 1/29. 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.
Sun 3/157:05 pm
IAD
-
CWL
1 stop10h 45m
Virgin Atlantic
Sun 3/225:30 pm
CWL
-
IAD
1 stop27h 35m
Virgin Atlantic
Deal found 1/29$1,003
This KLM deal was found by Cheapflights users on 1/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/157:05 pm
IAD
-
CWL
1 stop10h 45m
KLM
Sun 3/225:30 pm
CWL
-
IAD
1 stop27h 35m
KLM
Deal found 1/29$1,012
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/159:30 pm
IAD
-
CWL
2 stops32h 45m
Multiple Airlines
Sun 3/229:20 pm
CWL
-
IAD
1 stop23h 15m
Multiple Airlines
Deal found 1/29$1,124
This Ovago deal was found by Cheapflights users on 1/28. 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.
Thu 8/136:10 pm
BWI
-
CWL
2 stops41h 55m
Multiple Airlines
Mon 8/179:45 am
CWL
-
BWI
2 stops18h 09m
Multiple Airlines
Deal found 1/28$1,154
This Ovago deal was found by Cheapflights users on 1/28. 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.
Thu 8/139:45 pm
IAD
-
CWL
2 stops30h 30m
Multiple Airlines
Mon 8/175:15 pm
CWL
-
IAD
1 stop27h 20m
Multiple Airlines
Deal found 1/28$1,174

Find flight deals from Washington, D.C. to Cardiff

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$854
(Delta)
Provider with most accurate pricing for Washington, D.C. (WAS)-Cardiff Wales flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Cardiff Wales flights.
Search Deals
From Washington, D.C. (WAS) to Cardiff Wales
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 30, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Cardiff that are best for you.

Fly from

Washington, D.C.

Fly to

Cardiff

Route

Depart

Return

Price

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 5/6

12:45 pm-9:15 am

2 stops15h 30m

Cardiff Wales

Wed 5/27

9:45 am-3:35 pm

1 stop10h 50m

$844

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 5/6

12:45 pm-9:15 am

2 stops15h 30m

Cardiff Wales

Wed 5/27

9:45 am-12:09 am

2 stops19h 24m

$854

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 5/6

10:05 am-9:15 am

2 stops18h 10m

Cardiff Wales

Wed 5/27

9:45 am-11:12 pm

2 stops18h 27m

$854

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Sun 3/15

7:05 pm-9:50 am

1 stop10h 45m

Cardiff Wales

Sun 3/22

5:30 pm-5:05 pm

1 stop27h 35m

$1,003

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Sun 3/15

7:05 pm-9:50 am

1 stop10h 45m

Cardiff Wales

Sun 3/22

5:30 pm-5:05 pm

1 stop27h 35m

$1,012

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Sun 3/15

9:30 pm-10:15 am

2 stops32h 45m

Cardiff Wales

Sun 3/22

9:20 pm-4:35 pm

1 stop23h 15m

$1,124

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Sun 3/15

9:40 am-11:05 pm

3 stops33h 25m

Cardiff Wales

Sun 3/22

9:20 pm-9:56 pm

3 stops28h 36m

$1,356

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Sun 3/15

5:09 pm-9:50 am

2 stops12h 41m

Cardiff Wales

Sun 3/22

5:30 pm-5:49 pm

2 stops28h 19m

$1,367

BaltimoreCardiff

BWI - CWL

BWICWL

Baltimore/Washington

Sun 3/15

9:35 pm-11:05 pm

2 stops21h 30m

Cardiff Wales

Sun 3/22

12:00 pm-7:40 pm

3 stops35h 40m

$1,884

BaltimoreCardiff

BWI - CWL

BWICWL

Baltimore/Washington

Sat 3/14

12:25 pm-9:50 am

2 stops17h 25m

Cardiff Wales

Sat 3/21

10:20 am-11:01 pm

2 stops16h 41m

$2,433

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 11 results
1
2

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

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Washington, D.C. 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 Washington, D.C. to Cardiff
No data available for this route at this time. Please check back soon.

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 January 30, 2026.
Peruse reviews from past customers who have flown with KLM from Washington, D.C. to Cardiff to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,443 reviews

Crew

8.4

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Food

7.3

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,443 reviews
KLM
7.7
Good
1,443 reviews

Crew

8.4

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Food

7.3

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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.?

    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.. Booking flights from Washington, D.C. to Cardiff Wales (CWL) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. from 0 different airlines.

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

    For as low as $1,003, Delta can have you in Cardiff from Washington, D.C. in 10h 45m. Airlines will cover a distance of 3548 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Washington, D.C. to Cardiff?

    The most popular flight routes from Washington, D.C. to Cardiff are Baltimore/Washington - Cardiff Wales, Washington, D.C. Reagan-National - Cardiff Wales and Washington, D.C. Dulles Intl - Cardiff Wales.

  • Can I find deals for flights from Washington, D.C. to Cardiff that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Cardiff flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Cardiff?

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

  • Can I find deals for business class flights from Washington, D.C. to Cardiff?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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

Traveling to a place near Cardiff?

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Bridgend

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Alternative routes for Washington, D.C. to Cardiff

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Manchester flights
Reagan-National to Manchester flights
Dulles Intl to Bristol flights
Reagan-National to Bristol flights
Reagan-National to Cardiff flights
Dulles Intl to Cardiff flights

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