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.

£621 Cheap Flights from Cardiff to Washington, D.C. in 2026

1 adult

0 bags

Voted winner of Europe's Best Travel App 2023

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

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

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

10:20 - 22:36

CWL

DCA

16h 16m

2 stops

17:09 - 09:50

DCA

CWL

12h 41m

2 stops

£621Multiple Airlines

Fri, 13 Mar - Fri, 20 Mar

08:35 - 20:55

CWL

IAD

16h 20m

2 stops

19:20 - 11:30

IAD

CWL

36h 10m

2 stops

£636British Airways

Fri, 13 Mar - Fri, 20 Mar

17:15 - 17:05

CWL

IAD

27h 50m

1 stop

19:29 - 09:50

IAD

CWL

34h 21m

2 stops

£662Multiple Airlines

Fri, 13 Mar - Fri, 20 Mar

08:35 - 19:45

CWL

BWI

15h 10m

2 stops

21:35 - 11:30

BWI

CWL

33h 55m

2 stops

£693British Airways

Fri, 13 Mar - Fri, 20 Mar

17:15 - 17:05

CWL

IAD

27h 50m

1 stop

19:05 - 09:50

IAD

CWL

10h 45m

1 stop

£700KLM

Fri, 13 Mar - Fri, 20 Mar

08:35 - 19:45

CWL

BWI

15h 10m

2 stops

21:35 - 11:30

BWI

CWL

33h 55m

2 stops

£931Multiple Airlines

Fri, 13 Mar - Fri, 20 Mar

17:15 - 18:05

CWL

DCA

28h 50m

3 stops

06:59 - 16:55

DCA

CWL

29h 56m

3 stops

£965Multiple Airlines

Fri, 13 Mar - Fri, 20 Mar

22:25 - 16:15

CWL

IAD

21h 50m

2 stops

20:40 - 19:40

IAD

CWL

19h 00m

3 stops

£987Multiple Airlines

Fri, 13 Mar - Fri, 20 Mar

10:20 - 12:45

CWL

IAD

30h 25m

3 stops

20:40 - 19:40

IAD

CWL

19h 00m

3 stops

£990Multiple Airlines

Fri, 13 Mar - Fri, 20 Mar

22:25 - 19:45

CWL

BWI

25h 20m

2 stops

20:40 - 09:50

BWI

CWL

33h 10m

3 stops

£1,165Multiple Airlines

Fri, 13 Mar - Fri, 20 Mar

British Airways flights from Cardiff to Washington, D.C.

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

British Airways

13 Mar

CWL08:35Cardiff Wales

16h 20m

2 stops

IAD20:55Washington, D.C. Dulles Intl

20 Mar

IAD19:20Washington, D.C. Dulles Intl

36h 10m

2 stops

CWL11:30Cardiff Wales

£636

British Airways

13 Mar

CWL08:35Cardiff Wales

15h 10m

2 stops

BWI19:45Baltimore/Washington

20 Mar

BWI21:35Baltimore/Washington

33h 55m

2 stops

CWL11:30Cardiff Wales

£693

Fly from

Fly to

Route

Depart

Return

Price

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Fri 13/3

10:20-22:36

2 stops16h 16m

Washington, D.C. Reagan-National

Fri 20/3

17:09-09:50

2 stops12h 41m

£621

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Fri 13/3

08:35-20:55

2 stops16h 20m

Washington, D.C. Dulles Intl

Fri 20/3

19:20-11:30

2 stops36h 10m

£636

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Fri 13/3

17:15-17:05

1 stop27h 50m

Washington, D.C. Dulles Intl

Fri 20/3

19:29-09:50

2 stops34h 21m

£662

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

Fri 13/3

08:35-19:45

2 stops15h 10m

Baltimore/Washington

Fri 20/3

21:35-11:30

2 stops33h 55m

£693

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Fri 13/3

17:15-17:05

1 stop27h 50m

Washington, D.C. Dulles Intl

Fri 20/3

19:05-09:50

1 stop10h 45m

£700

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

Fri 13/3

08:35-19:45

2 stops15h 10m

Baltimore/Washington

Fri 20/3

21:35-11:30

2 stops33h 55m

£931

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Fri 13/3

17:15-18:05

3 stops28h 50m

Washington, D.C. Reagan-National

Fri 20/3

06:59-16:55

3 stops29h 56m

£965

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Fri 13/3

22:25-16:15

2 stops21h 50m

Washington, D.C. Dulles Intl

Fri 20/3

20:40-19:40

3 stops19h 00m

£987

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Fri 13/3

10:20-12:45

3 stops30h 25m

Washington, D.C. Dulles Intl

Fri 20/3

20:40-19:40

3 stops19h 00m

£990

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

Fri 13/3

22:25-19:45

2 stops25h 20m

Baltimore/Washington

Fri 20/3

20:40-09:50

3 stops33h 10m

£1,165

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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.

Fastest flight time	15h 10m
Direct flights	None

The fastest flight from Cardiff to Washington, D.C. takes 15h 10m

There are no direct flights from Cardiff to Washington, D.C.. There are no popular flight routes from Cardiff to Washington, D.C..

Search flight deals

How far is Cardiff Wales to Washington, D.C. by plane?
There are 3537.5 mi between Cardiff Wales and Washington, D.C.. 15h 10m 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.
What is the most popular airline from Cardiff to Washington, D.C.?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Cardiff to Washington, D.C. is KLM (100% of total bookings).

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.

Laurel

College Park

Fairfax

Arlington

Linthicum Heights

Alexandria

Glen Burnie

Lutherville Timonium

Ellicott City

Cambridge

Lexington Park

Westminster

Woodbridge

Bethesda

Rockville

Silver Spring

Owings Mills

National Harbor

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.