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Cheap flights from Cardiff to Washington, D.C. from £783

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Cardiff to Washington, D.C. departing on 19/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Delta Logo
10:20 - 23:08CWL-DCA
17h 48m2 stops
Delta Logo
11:00 - 09:50DCA-CWL
17h 50m2 stops
£783Delta
Find Deal
Thu, 19 Feb - Mon, 23 Feb
Delta Logo
10:20 - 23:08CWL-DCA
17h 48m2 stops
Delta Logo
11:00 - 09:50DCA-CWL
17h 50m2 stops
£786Delta
Find Deal
Thu, 19 Feb - Mon, 23 Feb
Delta Logo
10:20 - 22:56CWL-DCA
17h 36m2 stops
Delta Logo
14:30 - 09:50DCA-CWL
14h 20m2 stops
£791Delta
Find Deal
Thu, 19 Feb - Mon, 23 Feb

Delta flights from Cardiff to Washington, D.C. Reagan-National Airport

Our best Delta deals on Cardiff to Washington, D.C. Reagan-National Airport flight tickets
Delta
19 Feb
CWL10:20Cardiff Wales
17h 48m
2 stops
DCA23:08Washington, D.C. Reagan-National
23 Feb
DCA11:00Washington, D.C. Reagan-National
17h 50m
2 stops
CWL09:50Cardiff Wales
£783
Find similar
Delta
19 Feb
CWL10:20Cardiff Wales
17h 48m
2 stops
DCA23:08Washington, D.C. Reagan-National
23 Feb
DCA11:00Washington, D.C. Reagan-National
17h 50m
2 stops
CWL09:50Cardiff Wales
£786
Find similar
Delta
19 Feb
CWL10:20Cardiff Wales
17h 36m
2 stops
DCA22:56Washington, D.C. Reagan-National
23 Feb
DCA14:30Washington, D.C. Reagan-National
14h 20m
2 stops
CWL09:50Cardiff Wales
£791
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Cardiff to Washington, D.C. Reagan-National Airport 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, momondo users made 279,928 searches. Data last updated 31 October 2025.
Use the filters below to find and compare flights from Cardiff to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Thu 19/2

10:20-23:08

2 stops17h 48m

Washington, D.C. Reagan-National

Mon 23/2

11:00-09:50

2 stops17h 50m

£783

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Thu 19/2

10:20-23:08

2 stops17h 48m

Washington, D.C. Reagan-National

Mon 23/2

11:00-09:50

2 stops17h 50m

£786

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Thu 19/2

10:20-22:56

2 stops17h 36m

Washington, D.C. Reagan-National

Mon 23/2

14:30-09:50

2 stops14h 20m

£791

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Cardiff to Washington, D.C. Reagan-National Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Cardiff to Washington, D.C. Reagan-National Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Cardiff to Washington, D.C. Reagan-National Airport (CWL to DCA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cardiff to Washington, D.C. Reagan-National Airport

Direct flights

None
There are no direct flights from Cardiff to Washington, D.C. Reagan-National Airport. There are no popular flight routes from Cardiff to Washington, D.C. Reagan-National Airport.
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  • How far is Cardiff Wales to Washington, D.C. Reagan-National by plane?

    A flight from Cardiff Wales to Washington, D.C. Reagan-National will travel around 3539.9 mi. A reasonable flight in good conditions will take 17h 36m.

  • When did momondo last update prices for flights from Cardiff Wales Airport to Washington, D.C. Reagan-National Airport?

    Prices for flights from Cardiff Wales Airport to Washington, D.C. Reagan-National Airport are updated daily.

  • How old do you have to be to fly from Cardiff Wales Airport to Washington, D.C. Reagan-National Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Cardiff Wales Airport to Washington, D.C. Reagan-National Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The travel and health documents required for your trip to Washington, D.C. Reagan-National Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Reagan-National Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from Cardiff to Washington, D.C. Reagan-National Airport?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Cardiff from Washington, D.C. Reagan-National Airport. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Cardiff to Washington, D.C. Reagan-National Airport with momondo?

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Laurel
College Park
Alexandria
Fairfax
Linthicum Heights
Bethesda
Cambridge
Ellicott City
Westminster
Arlington
Woodbridge
Owings Mills
Silver Spring
National Harbor

Why use momondo?

Why should I use momondo to find a flight deal from Cardiff to Washington, D.C.?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Cardiff to Washington, D.C. . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Cardiff to Washington, D.C. with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington, D.C. from Cardiff which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Cardiff to Washington, D.C.?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Cardiff to Washington, D.C..

I’m not ready to book a flight from Cardiff to Washington, D.C. right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Washington, D.C. from Cardiff. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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