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Cardiff

$300+ Cheap flights from Washington, D.C. (WAS) 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — CWL
Jan 9 — Jan 161
Fri 1/9
Fri 1/16
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Cardiff

Best flights from Washington, D.C. to Cardiff
Discover carefully curated flight deals from Washington, D.C. to Cardiff that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 10, 2025.

This Mytrip deal was found by Cheapflights users on 12/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/237:40 pmIAD - CWL
2 stops19h 00mMultiple Airlines
Fri 1/3010:25 pmCWL - IAD
2 stops25h 05mMultiple Airlines
Deal found 12/9$526
This Expedia deal was found by Cheapflights users on 12/10. 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 1/246:05 pmIAD - CWL
1 stop10h 40mKLM
Sat 1/315:25 pmCWL - IAD
1 stop27h 40mKLM
Deal found 12/10$751
This Netflights deal was found by Cheapflights users on 12/10. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/246:05 pmIAD - CWL
1 stop10h 40mVirgin Atlantic
Sat 1/3110:20 amCWL - IAD
2 stops13h 49mVirgin Atlantic
Deal found 12/10$755
This Delta deal was found by Cheapflights users on 12/10. 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.
Sat 1/2410:54 amBWI - CWL
2 stops17h 51mDelta
Sat 1/3110:20 amCWL - BWI
2 stops17h 45mDelta
Deal found 12/10$793
This lastminute.com deal was found by Cheapflights users on 12/9. 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.
Fri 1/2311:45 amBWI - CWL
2 stops17h 05mVirgin Atlantic
Fri 1/3010:20 amCWL - BWI
2 stops19h 21mVirgin Atlantic
Deal found 12/9$776
This KLM deal was found by Cheapflights users on 12/10. 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 1/812:23 pmIAD - CWL
2 stops16h 27mKLM
Mon 1/125:15 pmCWL - IAD
1 stop27h 50mKLM
Deal found 12/10$783
This Delta deal was found by Cheapflights users on 12/8. 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.
Fri 1/233:38 pmBWI - CWL
2 stops20h 17mDelta
Fri 1/3010:20 amCWL - BWI
2 stops17h 45mDelta
Deal found 12/8$793
This lastminute.com deal was found by Cheapflights users on 12/9. 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.
Fri 1/2312:55 pmDCA - CWL
2 stops15h 55mVirgin Atlantic
Fri 1/305:15 pmCWL - DCA
2 stops34h 38mVirgin Atlantic
Deal found 12/9$776
This Mytrip deal was found by Cheapflights users on 12/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/237:40 pmBWI - CWL
3 stops33h 05mMultiple Airlines
Fri 1/305:15 pmCWL - BWI
3 stops30h 25mMultiple Airlines
Deal found 12/9$861
This KLM deal was found by Cheapflights users on 12/9. 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 1/2312:23 pmIAD - CWL
2 stops16h 27mKLM
Fri 1/305:15 pmCWL - IAD
1 stop27h 50mKLM
Deal found 12/9$783
This Delta deal was found by Cheapflights users on 12/10. 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.
Sat 1/2410:15 amDCA - CWL
2 stops18h 30mDelta
Sat 1/3110:20 amCWL - DCA
2 stops17h 37mDelta
Deal found 12/10$793
This lastminute.com deal was found by Cheapflights users on 12/10. 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.
Sat 1/241:02 pmBWI - CWL
2 stops15h 43mVirgin Atlantic
Sat 1/315:25 pmCWL - BWI
2 stops29h 21mVirgin Atlantic
Deal found 12/10$777
This Delta deal was found by Cheapflights users on 12/10. 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.
Sat 1/2412:29 pmIAD - CWL
2 stops16h 16mDelta
Sat 1/3110:20 amCWL - IAD
2 stops17h 46mDelta
Deal found 12/10$793
This lastminute.com deal was found by Cheapflights users on 12/10. 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.
Sat 1/241:04 pmDCA - CWL
2 stops15h 41mVirgin Atlantic
Sat 1/315:25 pmCWL - DCA
2 stops28h 04mVirgin Atlantic
Deal found 12/10$777
This Mytrip deal was found by Cheapflights users on 12/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/247:40 pmBWI - CWL
3 stops33h 10mMultiple Airlines
Sat 1/315:25 pmCWL - BWI
3 stops30h 15mMultiple Airlines
Deal found 12/10$944
This KLM deal was found by Cheapflights users on 12/10. 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 5/15:40 pmIAD - CWL
1 stop18h 25mKLM
Mon 5/185:15 pmCWL - IAD
1 stop27h 20mKLM
Deal found 12/10$865
This Delta deal was found by Cheapflights users on 12/10. 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.
Fri 5/17:40 amDCA - CWL
2 stops20h 35mDelta
Mon 5/189:45 amCWL - DCA
2 stops18h 27mDelta
Deal found 12/10$808
This lastminute.com deal was found by Cheapflights users on 12/8. 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.
Thu 1/2211:45 amBWI - CWL
2 stops17h 05mVirgin Atlantic
Thu 1/2910:20 amCWL - BWI
2 stops19h 21mVirgin Atlantic
Deal found 12/8$778
This Mytrip deal was found by Cheapflights users on 12/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/227:40 pmBWI - CWL
2 stops21h 20mMultiple Airlines
Thu 1/295:25 pmCWL - BWI
3 stops30h 15mMultiple Airlines
Deal found 12/8$975
This Booking.com deal was found by Cheapflights users on 12/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/234:15 pmDCA - CWL
3 stops19h 40mMultiple Airlines
Fri 1/305:15 pmCWL - DCA
3 stops33h 43mMultiple Airlines
Deal found 12/9$1,027
This KLM deal was found by Cheapflights users on 12/7. 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 3/258:45 pmDCA - CWL
2 stops16h 10mKLM
Fri 3/2710:20 amCWL - DCA
2 stops17h 28mKLM
Deal found 12/7$1,039
This Delta deal was found by Cheapflights users on 12/7. 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.
Tue 3/247:35 pmDCA - CWL
2 stops17h 20mDelta
Fri 3/2710:20 amCWL - DCA
2 stops17h 28mDelta
Deal found 12/7$1,092
This Mytrip deal was found by Cheapflights users on 12/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/246:59 amDCA - CWL
3 stops32h 56mMultiple Airlines
Sat 1/318:05 pmCWL - DCA
3 stops31h 30mMultiple Airlines
Deal found 12/10$1,197
This Gotogate deal was found by Cheapflights users on 12/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:30 pmBWI - CWL
2 stops33h 00mMultiple Airlines
Mon 5/1812:00 pmCWL - BWI
2 stops36h 40mMultiple Airlines
Deal found 12/10$1,215

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 December 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$526
(Mytrip)

One-way from

$300
(Kiwi.com)
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
One-way flight 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 December 10, 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

Fri 1/23

7:40 pm-7:40 pm

2 stops19h 00m

Cardiff Wales

Fri 1/30

10:25 pm-6:30 pm

2 stops25h 05m

$526

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Sat 1/24

6:05 pm-9:45 am

1 stop10h 40m

Cardiff Wales

Sat 1/31

5:25 pm-4:05 pm

1 stop27h 40m

$751

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Sat 1/24

6:05 pm-9:45 am

1 stop10h 40m

Cardiff Wales

Sat 1/31

10:20 am-7:09 pm

2 stops13h 49m

$755

BaltimoreCardiff

BWI - CWL

BWICWL

Baltimore/Washington

Fri 1/23

11:45 am-9:50 am

2 stops17h 05m

Cardiff Wales

Fri 1/30

10:20 am-12:41 am

2 stops19h 21m

$776

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Fri 1/23

12:55 pm-9:50 am

2 stops15h 55m

Cardiff Wales

Fri 1/30

5:15 pm-10:53 pm

2 stops34h 38m

$776

BaltimoreCardiff

BWI - CWL

BWICWL

Baltimore/Washington

Sat 1/24

1:02 pm-9:45 am

2 stops15h 43m

Cardiff Wales

Sat 1/31

5:25 pm-5:46 pm

2 stops29h 21m

$777

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Sat 1/24

1:04 pm-9:45 am

2 stops15h 41m

Cardiff Wales

Sat 1/31

5:25 pm-4:29 pm

2 stops28h 04m

$777

BaltimoreCardiff

BWI - CWL

BWICWL

Baltimore/Washington

Thu 1/22

11:45 am-9:50 am

2 stops17h 05m

Cardiff Wales

Thu 1/29

10:20 am-12:41 am

2 stops19h 21m

$778

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 1/8

12:23 pm-9:50 am

2 stops16h 27m

Cardiff Wales

Mon 1/12

5:15 pm-4:05 pm

1 stop27h 50m

$783

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Fri 1/23

12:23 pm-9:50 am

2 stops16h 27m

Cardiff Wales

Fri 1/30

5:15 pm-4:05 pm

1 stop27h 50m

$783

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

Showing 1-10 of 26 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 December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C.-Cardiff flight deals on Cheapflights vs. eDreams >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 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.-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 December 10, 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 30% 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 December 10, 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
1,432 reviews

Comfort

7.6

Food

7.2

Boarding

7.8

Overall

7.7

Entertainment

7.1

Crew

8.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,432 reviews
KLM
7.7
Good
1,432 reviews

Comfort

7.6

Food

7.2

Boarding

7.8

Overall

7.7

Entertainment

7.1

Crew

8.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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 $751, KLM can have you in Cardiff from Washington, D.C. in 10h 40m. 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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Alternative routes for Washington, D.C. to Cardiff

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Dulles Intl to Cardiff flights

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