$476 Cheap Flights from Washington (DCA) to Cardiff (CWL)

View $476 flight on Tue, Nov 18, 2025Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Cardiff International Airport (CWL)

Cheap Flights from Washington to Cardiff (DCA-CWL)

Prices were available within the past 7 days and start at $476 for one-way flights and $782 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Virgin Atlantic
Sat, Nov 8 - Sat, Nov 15
DCA
Washington
CWL
Cardiff
$782 Roundtrip, found 3 days ago
$782
Roundtrip
found 3 days ago
Select Virgin Atlantic flight, departing Sat, Nov 8 from Washington to Cardiff, returning Sat, Nov 15, priced at $782 found 3 days ago
Delta
Sun, Nov 2 - Mon, Nov 17
DCA
Washington
CWL
Cardiff
$783 Roundtrip, found 5 days ago
$783
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Nov 2 from Washington to Cardiff, returning Mon, Nov 17, priced at $783 found 5 days ago
Delta
Mon, Dec 8 - Wed, Dec 24
DCA
Washington
CWL
Cardiff
$788 Roundtrip, found 12 hours ago
$788
Roundtrip
found 12 hours ago
Select Delta flight, departing Mon, Dec 8 from Washington to Cardiff, returning Wed, Dec 24, priced at $788 found 12 hours ago
Delta
Tue, Nov 18 - Thu, Nov 27
DCA
Washington
CWL
Cardiff
$789 Roundtrip, found 22 hours ago
$789
Roundtrip
found 22 hours ago
Select Delta flight, departing Tue, Nov 18 from Washington to Cardiff, returning Thu, Nov 27, priced at $789 found 22 hours ago
Delta
Mon, Dec 1 - Sun, Dec 21
DCA
Washington
CWL
Cardiff
$794 Roundtrip, found 12 hours ago
$794
Roundtrip
found 12 hours ago
Select Delta flight, departing Mon, Dec 1 from Washington to Cardiff, returning Sun, Dec 21, priced at $794 found 12 hours ago
Delta
Tue, Nov 18 - Thu, Nov 27
DCA
Washington
CWL
Cardiff
$795 Roundtrip, found 22 hours ago
$795
Roundtrip
found 22 hours ago
Select Delta flight, departing Tue, Nov 18 from Washington to Cardiff, returning Thu, Nov 27, priced at $795 found 22 hours ago
Delta
Wed, Jan 14 - Sat, Jan 31
DCA
Washington
CWL
Cardiff
$796 Roundtrip, found 7 hours ago
$796
Roundtrip
found 7 hours ago
Select Delta flight, departing Wed, Jan 14 from Washington to Cardiff, returning Sat, Jan 31, priced at $796 found 7 hours ago
Delta
Sun, Jan 18 - Sat, Jan 24
DCA
Washington
CWL
Cardiff
$797 Roundtrip, found 15 hours ago
$797
Roundtrip
found 15 hours ago
Select Delta flight, departing Sun, Jan 18 from Washington to Cardiff, returning Sat, Jan 24, priced at $797 found 15 hours ago
Delta
Mon, Dec 8 - Thu, Dec 25
DCA
Washington
CWL
Cardiff
$798 Roundtrip, found 12 hours ago
$798
Roundtrip
found 12 hours ago
Select Delta flight, departing Mon, Dec 8 from Washington to Cardiff, returning Thu, Dec 25, priced at $798 found 12 hours ago
KLM
Wed, Oct 8 - Wed, Oct 15
DCA
Washington
CWL
Cardiff
$834 Roundtrip, found 3 days ago
$834
Roundtrip
found 3 days ago
Select KLM flight, departing Wed, Oct 8 from Washington to Cardiff, returning Wed, Oct 15, priced at $834 found 3 days ago

Alternative airports near Cardiff

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Bristol Intl. BRS. Average driving time to city center is 1 hour 0 minutes. Flights from $1,159
BRS
Bristol Intl.
Average driving time to city center1 h 0 min
Flights from $1,159

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Cardiff Intl. Airport (CWL) cost?
Secure a cheap one-way flight from $476 or cheap return flight from $782 from Ronald Reagan Washington National Airport (DCA) to Cardiff Intl. Airport (CWL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to Cardiff Intl. Airport (CWL)?
November is the most affordable month to fly from DCA to CWL. Traveling during an off-peak travel window is often the key to finding a great deal.
What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to Cardiff Intl. Airport (CWL)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest DCA to CWL flight.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Cardiff Intl. Airport (CWL)?
There aren't any daily nonstop flights from Ronald Reagan Washington National Airport (DCA) to Cardiff Intl. Airport (CWL). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from DCA to CWL?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary based on a range of factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to Cardiff Intl. Airport (CWL)?
To land at Cardiff Intl. Airport (CWL) on time, choose a flight that leaves from Ronald Reagan Washington National Airport (DCA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to Cardiff Intl. Airport (CWL) last-minute?
Holding off until just before your trip to book a ticket from DCA to CWL generally means paying more. Although you may find some last-minute deals, they aren't always guaranteed. Keep your travel schedule open for a better chance of getting a bargain.
Is it cheaper to book a DCA to CWL flight and hotel package?
Compared with arranging hotels and flights separately, booking a DCA to CWL flight and hotel package with Expedia could result in significant savings. What's more, having everything in one easy place takes the hassle out of travel planning. Simply secure your flights and select from our extensive range of hotels, then customize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Cardiff Intl. Airport (CWL)?
If you reserved your DCA to CWL flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

Travel information

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
Cardiff Intl.
Airlines serving
Delta, Virgin Atlantic
Roundtrip price
$781
Distance
3537 mi

Book with confidence

Book with confidence

Washington to Cardiff Flights

The cheapest times to fly from Washington to Cardiff

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Cardiff are during the month of November. You can find some of the cheapest flights from Washington to Cardiff with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Cardiff

Sunday is one of the best days to book for cheap flights from Washington to Cardiff: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Cardiff

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Cardiff in 2025. You can also book with separate airlines for your outbound and return journeys, from $476 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Cardiff flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Cardiff airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Washington to Cardiff Flights

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*Available to One Key members.