How do I get Price Alerts for flights from Cardiff to Washington, D.C.?

Search flight deals from Cardiff to Washington, D.C. . While viewing offers you’ll have the option to create a Price Alert.

How can I save money on flights from Cardiff to Washington, D.C. 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.

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

Prices for flights from Cardiff Wales Airport to Washington, D.C. refresh daily.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Cardiff Wales Airport to Washington, D.C..

What documentation or ID do you need to fly to Washington, D.C.?

The required travel and health documents for your Washington, D.C. trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£518 Cheap Flights from Cardiff to Washington, D.C. in 2025

1 adult

0 bags

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

Round-trip

One-way

Cheap return flights

11:00 - 18:55CWL-IAD

12h 55m1 stop

17:20 - 12:45IAD-CWL

14h 25m1 stop

£518

Find Deal

sø., 31 aug. - sø., 7 sep.

09:00 - 15:50CWL-IAD

11h 50m1 stop

20:25 - 10:35IAD-CWL

9h 10m1 stop

£600

Find Deal

lø., 30 aug. - lø., 6 sep.

11:00 - 18:55CWL-IAD

12h 55m1 stop

17:20 - 09:15IAD-CWL

34h 55m2 stops

£601

Find Deal

sø., 31 aug. - sø., 7 sep.

20:45 - 17:40CWL-BWI

25h 55m3 stops

18:50 - 12:45BWI-CWL

12h 55m2 stops

£618

Find Deal

sø., 31 aug. - sø., 7 sep.

09:50 - 15:35CWL-IAD

10h 45m1 stop

20:23 - 16:45IAD-CWL

15h 22m2 stops

£659Delta

Find Deal

sø., 31 aug. - sø., 7 sep.

09:50 - 22:12CWL-DCA

17h 22m2 stops

17:00 - 16:45DCA-CWL

18h 45m2 stops

£664Delta

Find Deal

sø., 31 aug. - sø., 7 sep.

17:15 - 17:20CWL-BWI

29h 05m2 stops

12:17 - 09:15BWI-CWL

15h 58m2 stops

£674KLM

Find Deal

ma., 1 sep. - ma., 8 sep.

09:45 - 15:35CWL-IAD

10h 50m1 stop

09:00 - 09:15IAD-CWL

19h 15m2 stops

£690Virgin Atlantic

Find Deal

lø., 30 aug. - lø., 6 sep.

09:45 - 19:15CWL-IAD

14h 30m2 stops

21:20 - 16:50IAD-CWL

14h 30m2 stops

£3,232Air France

Find Deal

lø., 16 aug. - lø., 23 aug.

09:50 - 00:23CWL-BWI

19h 33m2 stops

18:59 - 16:45BWI-CWL

16h 46m2 stops

£3,906KLM

Find Deal

lø., 23 aug. - lø., 30 aug.

Delta flights from Cardiff to Washington, D.C.

Our best Delta deals on Cardiff to Washington, D.C. flight tickets

Delta

31 Aug

CWL09:50Cardiff Wales

10h 45m

1 stop

IAD15:35Washington, D.C. Dulles Intl

7 Sept

IAD20:23Washington, D.C. Dulles Intl

15h 22m

2 stops

CWL16:45Cardiff Wales

£659

Find similar

Delta

31 Aug

CWL09:50Cardiff Wales

17h 22m

2 stops

DCA22:12Washington, D.C. Reagan-National

7 Sept

DCA17:00Washington, D.C. Reagan-National

18h 45m

2 stops

CWL16:45Cardiff Wales

£664

Find similar

Delta

30 Aug

CWL09:45Cardiff Wales

18h 36m

2 stops

IAD23:21Washington, D.C. Dulles Intl

6 Sept

IAD12:39Washington, D.C. Dulles Intl

15h 36m

2 stops

CWL09:15Cardiff Wales

£695

Find similar

KLM flights from Cardiff to Washington, D.C.

Our best KLM deals on Cardiff to Washington, D.C. flight tickets

KLM

1 Sept

CWL17:15Cardiff Wales

29h 05m

2 stops

BWI17:20Baltimore/Washington

8 Sept

BWI12:17Baltimore/Washington

15h 58m

2 stops

CWL09:15Cardiff Wales

£674

Find similar

KLM

23 Aug

CWL09:50Cardiff Wales

19h 33m

2 stops

BWI00:23Baltimore/Washington

30 Aug

BWI18:59Baltimore/Washington

16h 46m

2 stops

CWL16:45Cardiff Wales

£3,906

Find similar

KLM

16 Aug

CWL09:45Cardiff Wales

14h 30m

2 stops

IAD19:15Washington, D.C. Dulles Intl

23 Aug

IAD17:25Washington, D.C. Dulles Intl

10h 50m

1 stop

CWL09:15Cardiff Wales

£3,937

Find similar

When to book flights from Cardiff to Washington, D.C.

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

Estimated return price

Cheap Cardiff to Washington, D.C. (CWL to WAS) flight deals and tips

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

Best price found	£518
Fastest flight time	10h 45m
Direct flights	None
Airports in Washington, D.C.	3 airports

The best flight deal from Cardiff to Washington, D.C. found on momondo in the last 72 hours is £518

The fastest flight from Cardiff to Washington, D.C. takes 10h 45m

There are no direct flights from Cardiff to Washington, D.C.. Popular non-direct routes for this connection are Cardiff Wales Airport - Baltimore/Washington Airport, Cardiff Wales Airport - Washington, D.C. Reagan-National Airport and Cardiff Wales Airport - Washington, D.C. Dulles Intl Airport.

There are 3 airports near Washington, D.C.: Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD)

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How far is Cardiff Wales to Washington, D.C. by plane?
There are 3537.5 mi between Cardiff Wales and Washington, D.C.. 10h 45m is a normal flight duration for this route.
When did momondo last update prices for flights from Cardiff Wales Airport to Washington, D.C.?
Prices for flights from Cardiff Wales Airport to Washington, D.C. refresh daily.
How old do you have to be to fly from Cardiff Wales Airport to Washington, D.C.?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Cardiff Wales Airport to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The required travel and health documents for your Washington, D.C. trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

How do I get Price Alerts for flights from Cardiff to Washington, D.C.?
Search flight deals from Cardiff to Washington, D.C.. While viewing offers you’ll have the option to create a Price Alert.
How can I save money on flights from Cardiff to Washington, D.C. 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.

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Westminster

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Why use momondo?

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

Finding the right flight to Washington, D.C. from Cardiff is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Cardiff with this policy.

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

momondo helps you find the best flight between Cardiff and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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 can track prices for Cardiff to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.