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 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.

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.

£572 Cheap Flights from Cardiff to Washington, D.C. Reagan-National Airport in 2026

Find the cheapest flights from Cardiff to Washington, D.C.

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

11:35 - 22:31CWL Cardiff Wales-DCA Washington, D.C. Reagan-National

15h 56m1 stop Toronto Pearson Intl

12:55 - 22:50DCA Washington, D.C. Reagan-National-CWL Cardiff Wales

28h 55m3 stops Ottawa Toronto Pearson Intl Dublin

£572Multiple Airlines

Sat, 5 Sep - Mon, 21 Sep

11:35 - 18:12CWL Cardiff Wales-DCA Washington, D.C. Reagan-National

11h 37m1 stop Toronto Pearson Intl

18:55 - 22:50DCA Washington, D.C. Reagan-National-CWL Cardiff Wales

22h 55m2 stops Toronto Pearson Intl Dublin

£575Multiple Airlines

Sat, 5 Sep - Mon, 21 Sep

11:35 - 21:48CWL Cardiff Wales-DCA Washington, D.C. Reagan-National

15h 13m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

12:55 - 22:50DCA Washington, D.C. Reagan-National-CWL Cardiff Wales

28h 55m3 stops Ottawa Toronto Pearson Intl Dublin

£578Multiple Airlines

Sat, 5 Sep - Mon, 21 Sep

11:35 - 10:18CWL Cardiff Wales-DCA Washington, D.C. Reagan-National

27h 43m3 stops Toronto Pearson Intl Ottawa Montreal Pierre Elliott Trudeau Intl

12:55 - 22:50DCA Washington, D.C. Reagan-National-CWL Cardiff Wales

28h 55m3 stops Ottawa Toronto Pearson Intl Dublin

£616Multiple Airlines

Sat, 5 Sep - Mon, 21 Sep

09:45 - 23:35CWL Cardiff Wales-DCA Washington, D.C. Reagan-National

18h 50m2 stops Amsterdam Schiphol Boston Logan Intl

10:16 - 09:15DCA Washington, D.C. Reagan-National-CWL Cardiff Wales

17h 59m2 stops Boston Logan Intl Amsterdam Schiphol

£642Delta

Wed, 30 Sep - Wed, 7 Oct

09:45 - 22:00CWL Cardiff Wales-DCA Washington, D.C. Reagan-National

17h 15m2 stops Amsterdam Schiphol Boston Logan Intl

15:15 - 09:45DCA Washington, D.C. Reagan-National-CWL Cardiff Wales

14h 30m2 stops Boston Logan Intl Amsterdam Schiphol

£709KLM

Fri, 23 Oct - Wed, 28 Oct

07:45 - 22:34CWL Cardiff Wales-DCA Washington, D.C. Reagan-National

19h 49m2 stops Dublin Toronto Pearson Intl

11:05 - 13:00DCA Washington, D.C. Reagan-National-CWL Cardiff Wales

21h 55m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Dublin

£930Multiple Airlines

Fri, 23 Oct - Wed, 28 Oct

12:00 - 09:00CWL Cardiff Wales-DCA Washington, D.C. Reagan-National

26h 00m3 stops Belfast City London Heathrow Boston Logan Intl

06:00 - 11:30DCA Washington, D.C. Reagan-National-CWL Cardiff Wales

25h 30m3 stops New York John F Kennedy Intl London Heathrow Belfast City

£985Multiple Airlines

Fri, 23 Oct - Wed, 28 Oct

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

momondo Fare Finder

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

Cheapest return flight

CardiffWashington, D.C.

CWL Cardiff Wales - DCA Washington, D.C. Reagan-National

CWLDCA

Cardiff Wales

Sat 5/9

11:35-22:31

1 stop15h 56m

Washington, D.C. Reagan-National

Mon 21/9

12:55-22:50

3 stops28h 55m

£572

CardiffWashington, D.C.

CWL Cardiff Wales - DCA Washington, D.C. Reagan-National

CWLDCA

Cardiff Wales

Sat 5/9

11:35-18:12

1 stop11h 37m

Washington, D.C. Reagan-National

Mon 21/9

18:55-22:50

2 stops22h 55m

£575

CardiffWashington, D.C.

CWL Cardiff Wales - DCA Washington, D.C. Reagan-National

CWLDCA

Cardiff Wales

Sat 5/9

11:35-21:48

2 stops15h 13m

Washington, D.C. Reagan-National

Mon 21/9

12:55-22:50

3 stops28h 55m

£578

CardiffWashington, D.C.

CWL Cardiff Wales - DCA Washington, D.C. Reagan-National

CWLDCA

Cardiff Wales

Sat 5/9

11:35-10:18

3 stops27h 43m

Washington, D.C. Reagan-National

Mon 21/9

12:55-22:50

3 stops28h 55m

£616

CardiffWashington, D.C.

CWL Cardiff Wales - DCA Washington, D.C. Reagan-National

CWLDCA

Cardiff Wales

Wed 30/9

09:45-23:35

2 stops18h 50m

Washington, D.C. Reagan-National

Wed 7/10

10:16-09:15

2 stops17h 59m

£642

Fastest return journey

CardiffWashington, D.C.

CWL Cardiff Wales - DCA Washington, D.C. Reagan-National

CWLDCA

Cardiff Wales

Fri 23/10

09:45-22:00

2 stops17h 15m

Washington, D.C. Reagan-National

Wed 28/10

15:15-09:45

2 stops14h 30m

£709

CardiffWashington, D.C.

CWL Cardiff Wales - DCA Washington, D.C. Reagan-National

CWLDCA

Cardiff Wales

Fri 23/10

07:45-22:34

2 stops19h 49m

Washington, D.C. Reagan-National

Wed 28/10

11:05-13:00

3 stops21h 55m

£930

CardiffWashington, D.C.

CWL Cardiff Wales - DCA Washington, D.C. Reagan-National

CWLDCA

Cardiff Wales

Fri 23/10

12:00-09:00

3 stops26h 00m

Washington, D.C. Reagan-National

Wed 28/10

06:00-11:30

3 stops25h 30m

£985

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

Best price found	£572
Fastest flight time	15h 56m
Direct flights	None

The best flight deal from Cardiff to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is £572

The fastest flight from Cardiff to Washington, D.C. Reagan-National Airport takes 15h 56m

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.

Search flight deals

Frequently asked questions about flying from Cardiff to Washington, D.C. Reagan-National Airport

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 15h 56m.
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.

Frequently asked questions about flying from Cardiff to Washington, D.C. Reagan-National Airport

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.

Alexandria

College Park

Arlington

Springfield

Fairfax

Gettysburg

Linthicum Heights

National Harbor

Ellicott City

Cambridge

Glen Burnie

Westminster

Laurel

Lutherville Timonium

Lexington Park

Woodbridge

Bethesda

Silver Spring

Rockville

Landover

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.