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Cardiff

$774+ 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — CWL
Nov 16 — Nov 231
Sun 11/16
Sun 11/23
1 adult, Economy
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Cheap 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 October 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$774
(Air France)

One-way from

$397
(Kiwi.com)
Provider with most accurate pricing for Washington, D.C. (WAS)-Cardiff Wales flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Cardiff Wales flights.
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From Washington, D.C. (WAS) to Cardiff Wales
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One-way flight from Washington, D.C. (WAS) to Cardiff Wales
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Find 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 October 17, 2025.

This Air France deal was found by Cheapflights users on 10/15. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:05 pmIAD - CWL
1 stop10h 45mKLM
Mon 12/85:15 pmCWL - IAD
1 stop27h 50mKLM
Deal found 10/15$774
This Virgin Atlantic deal was found by Cheapflights users on 10/15. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:05 pmIAD - CWL
1 stop17h 50mVirgin Atlantic
Mon 12/810:20 amCWL - IAD
2 stops13h 59mVirgin Atlantic
Deal found 10/15$784
This Delta deal was found by Cheapflights users on 10/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:05 pmIAD - CWL
1 stop17h 50mDelta
Sun 11/1610:20 amCWL - IAD
2 stops13h 48mDelta
Deal found 10/14$785
This Air France deal was found by Cheapflights users on 10/15. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/192:35 pmBWI - CWL
2 stops14h 15mMultiple Airlines
Mon 12/810:20 amCWL - BWI
2 stops17h 43mMultiple Airlines
Deal found 10/15$789
This Virgin Atlantic deal was found by Cheapflights users on 10/15. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:13 amDCA - CWL
2 stops17h 37mVirgin Atlantic
Sun 12/710:20 amCWL - DCA
2 stops18h 38mVirgin Atlantic
Deal found 10/15$789
This Delta deal was found by Cheapflights users on 10/15. 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.
Wed 11/1912:11 pmIAD - CWL
2 stops16h 39mDelta
Mon 12/810:20 amCWL - IAD
2 stops18h 53mDelta
Deal found 10/15$789
This KLM deal was found by Cheapflights users on 10/15. 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.
Wed 11/126:05 pmIAD - CWL
1 stop10h 45mKLM
Sun 11/165:30 pmCWL - IAD
1 stop27h 35mKLM
Deal found 10/15$826
This KLM deal was found by Cheapflights users on 10/15. 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.
Thu 10/307:05 pmIAD - CWL
1 stop10h 45mKLM
Thu 11/135:25 pmCWL - IAD
1 stop27h 40mKLM
Deal found 10/15$889
This Delta deal was found by Cheapflights users on 10/16. 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.
Thu 10/307:05 pmIAD - CWL
1 stop17h 40mDelta
Thu 11/1310:20 amCWL - IAD
2 stops18h 56mDelta
Deal found 10/16$898
This KLM deal was found by Cheapflights users on 10/15. 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.
Sun 10/195:25 pmIAD - CWL
1 stop10h 50mKLM
Tue 10/219:50 amCWL - IAD
1 stop10h 45mKLM
Deal found 10/15$1,107
This KLM deal was found by Cheapflights users on 10/15. 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.
Sun 10/191:50 pmBWI - CWL
2 stops14h 25mKLM
Tue 10/219:50 amCWL - BWI
2 stops17h 25mKLM
Deal found 10/15$1,122
This KLM deal was found by Cheapflights users on 10/15. 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.
Sun 10/191:15 pmDCA - CWL
2 stops15h 00mKLM
Tue 10/219:50 amCWL - DCA
2 stops17h 17mKLM
Deal found 10/15$1,122

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 October 17, 2025.
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 11/19

6:05 pm-9:50 am

1 stop10h 45m

Cardiff Wales

Mon 12/8

5:15 pm-4:05 pm

1 stop27h 50m

$774

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Sat 2/28

6:05 pm-9:50 am

1 stop10h 45m

Cardiff Wales

Sun 3/8

5:30 pm-5:05 pm

1 stop27h 35m

$782

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 11/19

6:05 pm-4:55 pm

1 stop17h 50m

Cardiff Wales

Mon 12/8

10:20 am-7:19 pm

2 stops13h 59m

$784

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 11/12

6:05 pm-4:55 pm

1 stop17h 50m

Cardiff Wales

Sun 11/16

10:20 am-7:08 pm

2 stops13h 48m

$785

BaltimoreCardiff

BWI - CWL

BWICWL

Baltimore/Washington

Wed 11/19

2:35 pm-9:50 am

2 stops14h 15m

Cardiff Wales

Mon 12/8

10:20 am-11:03 pm

2 stops17h 43m

$789

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 11/19

12:39 pm-9:50 am

2 stops16h 11m

Cardiff Wales

Mon 12/8

10:20 am-11:58 pm

2 stops18h 38m

$789

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 12/3

11:13 am-9:50 am

2 stops17h 37m

Cardiff Wales

Sun 12/7

10:20 am-11:58 pm

2 stops18h 38m

$789

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Sat 2/28

11:00 am-9:50 am

2 stops17h 50m

Cardiff Wales

Sun 3/8

10:20 am-11:08 pm

2 stops16h 48m

$797

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 11/12

6:05 pm-9:50 am

1 stop10h 45m

Cardiff Wales

Sun 11/16

5:30 pm-4:05 pm

1 stop27h 35m

$826

BaltimoreCardiff

BWI - CWL

BWICWL

Baltimore/Washington

Sat 2/28

4:00 pm-9:50 am

2 stops12h 50m

Cardiff Wales

Sun 3/8

10:20 am-9:15 am

2 stops26h 55m

$1,172

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 11 results
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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 October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 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

What is the cheapest time of day to fly from WAS to CWL?

Find hourly flight availability from Washington, D.C. to Cardiff. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 17, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to Cardiff at noon. If you’re flexible enough to do this you can expect to save up to 24% on your trip compared to booking a flight in the evening.

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 October 17, 2025.
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
1,404 reviews

Entertainment

7.1

Food

7.3

Boarding

7.8

Crew

8.4

Comfort

7.6

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,404 reviews
KLM
7.7
Good
1,404 reviews

Entertainment

7.1

Food

7.3

Boarding

7.8

Crew

8.4

Comfort

7.6

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

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 1 airline.

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

    For as low as $774, KLM 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 is the cheapest airline to fly from Washington, D.C. to Cardiff round-trip?

    Cheapflights users have booked flights from Washington, D.C. to Cardiff round-trip from $765.

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

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

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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
Dulles Intl to Cardiff flights
Reagan-National to Cardiff flights

Top airline flying from Washington, D.C. to Cardiff

Discover the top airline that operate flights from Washington, D.C. 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 October 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$765Average$797FlexibilityNo cancel feeOn-time75%

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