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Cardiff

$824+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — CWL
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
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 August 18, 2025.

Round-trip from

$904
(Mytrip)
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 August 18, 2025.

This Mytrip deal was found by Cheapflights users on 8/17. 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.
Mon 8/183:25 pmIAD - CWL
2 stops19h 30mMultiple Airlines
Mon 8/251:10 pmCWL - IAD
2 stops35h 15mMultiple Airlines
Deal found 8/17$824
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/309:00 pmIAD - CWL
1 stop29h 25mMultiple Airlines
Tue 10/74:20 pmCWL - IAD
2 stops32h 39mMultiple Airlines
Deal found 8/15$912
This Gotogate deal was found by Cheapflights users on 8/17. 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.
Wed 10/15:25 pmIAD - CWL
1 stop10h 50mVirgin Atlantic
Wed 10/89:50 amCWL - IAD
1 stop10h 45mVirgin Atlantic
Deal found 8/17$913
This Mytrip deal was found by Cheapflights users on 8/17. 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.
Wed 10/19:05 pmIAD - CWL
2 stops17h 35mMultiple Airlines
Wed 10/88:30 pmCWL - IAD
2 stops23h 50mMultiple Airlines
Deal found 8/17$924
This KLM deal was found by Cheapflights users on 8/17. 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.
Mon 10/135:25 pmIAD - CWL
1 stop18h 20mKLM
Wed 10/229:50 amCWL - IAD
1 stop10h 45mKLM
Deal found 8/17$937
This KLM deal was found by Cheapflights users on 8/17. 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 10/12:50 pmDCA - CWL
2 stops13h 25mMultiple Airlines
Wed 10/89:50 amCWL - DCA
2 stops15h 43mMultiple Airlines
Deal found 8/17$942
This Virgin Atlantic deal was found by Cheapflights users on 8/15. 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 11/126:05 pmIAD - CWL
1 stop10h 45mVirgin Atlantic
Sun 11/165:30 pmCWL - IAD
2 stops32h 43mVirgin Atlantic
Deal found 8/15$947
This Delta deal was found by Cheapflights users on 8/15. 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 12/310:00 amBWI - CWL
2 stops25h 55mDelta
Sun 12/710:20 amCWL - BWI
2 stops18h 52mDelta
Deal found 8/15$952
This Virgin Atlantic deal was found by Cheapflights users on 8/17. 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 12/33:30 pmDCA - CWL
2 stops13h 20mVirgin Atlantic
Sun 12/75:30 pmCWL - DCA
2 stops31h 44mVirgin Atlantic
Deal found 8/17$952
This Mytrip deal was found by Cheapflights users on 8/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/308:30 pmBWI - CWL
2 stops18h 20mMultiple Airlines
Tue 10/74:20 pmCWL - BWI
3 stops30h 20mMultiple Airlines
Deal found 8/15$965
This Mytrip deal was found by Cheapflights users on 8/17. 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.
Wed 10/16:50 pmBWI - CWL
3 stops19h 55mMultiple Airlines
Wed 10/85:15 pmCWL - BWI
3 stops29h 25mMultiple Airlines
Deal found 8/17$986
This KLM deal was found by Cheapflights users on 8/16. 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 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 8/16$989

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 August 18, 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

Thu 10/2

1:30 pm-8:30 pm

3 stops26h 00m

Cardiff Wales

Thu 10/9

8:20 pm-3:20 pm

2 stops24h 00m

$904

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Tue 9/30

9:00 pm-7:25 am

1 stop29h 25m

Cardiff Wales

Tue 10/7

4:20 pm-7:59 pm

2 stops32h 39m

$912

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 10/1

5:25 pm-9:15 am

1 stop10h 50m

Cardiff Wales

Wed 10/8

9:50 am-3:35 pm

1 stop10h 45m

$913

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 10/1

9:05 pm-7:40 pm

2 stops17h 35m

Cardiff Wales

Wed 10/8

8:30 pm-3:20 pm

2 stops23h 50m

$924

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 10/30

7:05 pm-9:50 am

1 stop10h 45m

Cardiff Wales

Thu 11/13

5:25 pm-4:05 pm

1 stop27h 40m

$937

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

$937

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Mon 10/13

5:25 pm-4:45 pm

1 stop18h 20m

Cardiff Wales

Wed 10/22

9:50 am-3:35 pm

1 stop10h 45m

$937

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Tue 9/9

5:25 pm-9:15 am

1 stop10h 50m

Cardiff Wales

Mon 9/15

9:50 am-3:35 pm

1 stop10h 45m

$937

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 10/1

2:50 pm-9:15 am

2 stops13h 25m

Cardiff Wales

Wed 10/8

9:50 am-8:33 pm

2 stops15h 43m

$942

BaltimoreCardiff

BWI - CWL

BWICWL

Baltimore/Washington

Wed 12/3

10:00 am-4:55 pm

2 stops25h 55m

Cardiff Wales

Sun 12/7

10:20 am-12:12 am

2 stops18h 52m

$952

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 26 results
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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 August 18, 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 2% on your trip compared to booking a flight in the morning.

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 August 18, 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
7.8
Good
1,385 reviews

Crew

8.4

Overall

7.8

Comfort

7.7

Food

7.3

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,385 reviews
KLM
7.8
Good
1,385 reviews

Crew

8.4

Overall

7.8

Comfort

7.7

Food

7.3

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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 $937, Virgin Atlantic 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, Washington, D.C. Reagan-National - Cardiff Wales and Baltimore/Washington - 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.

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

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Cardiff (average of $773). Flying from Washington, D.C. 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 Cardiff?

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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
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Reagan-National to Bristol 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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$765Average$791FlexibilityNo cancel feeOn-time75%

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