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.

£606 Cheap Flights from Cardiff to Washington, D.C. in 2026

1 adult

0 bags

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

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One-way

Cheap return flights

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10:20 - 22:57

CWL

DCA

17h 37m2 stops

12:59 - 09:50

DCA

CWL

15h 51m2 stops

£606KLM

Sat, 21 Feb - Sat, 28 Feb

08:35 - 15:35

CWL

IAD

36h 00m2 stops

21:45 - 11:30

IAD

CWL

32h 45m2 stops

£632British Airways

Fri, 6 Feb - Fri, 13 Feb

20:05 - 21:00

CWL

IAD

29h 55m2 stops

17:05 - 20:55

IAD

CWL

22h 50m1 stop

£638Multiple Airlines

Sat, 21 Feb - Sat, 28 Feb

10:20 - 23:09

CWL

IAD

17h 49m2 stops

07:15 - 09:50

IAD

CWL

21h 35m2 stops

£658Virgin Atlantic

Sat, 21 Feb - Sat, 28 Feb

22:25 - 15:15

CWL

IAD

21h 50m2 stops

17:05 - 19:40

IAD

CWL

21h 35m1 stop

£668Multiple Airlines

Fri, 6 Feb - Fri, 13 Feb

17:15 - 16:05

CWL

IAD

27h 50m1 stop

18:50 - 08:30

IAD

CWL

32h 40m1 stop

£732Multiple Airlines

Fri, 6 Feb - Fri, 13 Feb

20:05 - 15:35

CWL

IAD

24h 30m1 stop

17:05 - 20:55

IAD

CWL

22h 50m1 stop

£755Multiple Airlines

Sat, 21 Feb - Sat, 28 Feb

22:25 - 15:15

CWL

IAD

21h 50m2 stops

09:45 - 19:40

IAD

CWL

28h 55m3 stops

£793Multiple Airlines

Fri, 6 Feb - Fri, 13 Feb

20:05 - 21:00

CWL

IAD

29h 55m2 stops

19:40 - 11:30

IAD

CWL

34h 50m3 stops

£860Multiple Airlines

Sat, 21 Feb - Sat, 28 Feb

22:25 - 20:29

CWL

IAD

27h 04m3 stops

09:45 - 19:40

IAD

CWL

28h 55m3 stops

£908Multiple Airlines

Fri, 6 Feb - Fri, 13 Feb

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

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

British Airways

6 Feb

CWL08:35Cardiff Wales

36h 00m

2 stops

IAD15:35Washington, D.C. Dulles Intl

13 Feb

IAD21:45Washington, D.C. Dulles Intl

32h 45m

2 stops

CWL11:30Cardiff Wales

£632

Find similar

British Airways

6 Feb

CWL08:35Cardiff Wales

39h 10m

2 stops

BWI18:45Baltimore/Washington

13 Feb

BWI20:35Baltimore/Washington

33h 55m

2 stops

CWL11:30Cardiff Wales

£738

Find similar

British Airways

21 Feb

CWL12:00Cardiff Wales

35h 45m

2 stops

BWI18:45Baltimore/Washington

28 Feb

BWI20:35Baltimore/Washington

33h 55m

2 stops

CWL11:30Cardiff Wales

£1,798

Find similar

Fly from

Fly to

Route

Depart

Return

Price

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Sat 21/2

10:20-22:57

2 stops17h 37m

Washington, D.C. Reagan-National

Sat 28/2

12:59-09:50

2 stops15h 51m

£606

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Fri 6/2

08:35-15:35

2 stops36h 00m

Washington, D.C. Dulles Intl

Fri 13/2

21:45-11:30

2 stops32h 45m

£632

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 21/2

20:05-21:00

2 stops29h 55m

Washington, D.C. Dulles Intl

Sat 28/2

17:05-20:55

1 stop22h 50m

£638

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 21/2

10:20-23:09

2 stops17h 49m

Washington, D.C. Dulles Intl

Sat 28/2

07:15-09:50

2 stops21h 35m

£658

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Fri 6/2

22:25-15:15

2 stops21h 50m

Washington, D.C. Dulles Intl

Fri 13/2

17:05-19:40

1 stop21h 35m

£668

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Fri 6/2

17:15-16:05

1 stop27h 50m

Washington, D.C. Dulles Intl

Fri 13/2

18:50-08:30

1 stop32h 40m

£732

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 21/2

20:05-15:35

1 stop24h 30m

Washington, D.C. Dulles Intl

Sat 28/2

17:05-20:55

1 stop22h 50m

£755

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Fri 6/2

22:25-15:15

2 stops21h 50m

Washington, D.C. Dulles Intl

Fri 13/2

09:45-19:40

3 stops28h 55m

£793

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 21/2

20:05-21:00

2 stops29h 55m

Washington, D.C. Dulles Intl

Sat 28/2

19:40-11:30

3 stops34h 50m

£860

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Fri 6/2

22:25-20:29

3 stops27h 04m

Washington, D.C. Dulles Intl

Fri 13/2

09:45-19:40

3 stops28h 55m

£908

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Cardiff to Washington, D.C.

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Which airlines fly to Washington, D.C.?

Aer Lingus, Virgin Atlantic and KLM are the top three most popular airlines that fly to Washington, D.C. from Cardiff according to our data. Aer Lingus is the first choice among our users, with 67% of people opting to fly with this airline when travelling to Washington, D.C.. Keep in mind that there are 3 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

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	17h 37m
Direct flights	None

The fastest flight from Cardiff to Washington, D.C. takes 17h 37m

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.. 17h 37m 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).

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Arlington

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Bethesda

Glen Burnie

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Ellicott City

Cambridge

Westminster

Woodbridge

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.