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.

£703 Cheap Flights from Cardiff to Washington, D.C. in 2025/26

1 adult

0 bags

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

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10:20 - 11:43CWL-IAD

30h 23m2 stops

18:05 - 16:55IAD-CWL

17h 50m1 stop

£802Virgin Atlantic

Find Deal

tor., 19 feb. - man., 23 feb.

10:20 - 22:43CWL-DCA

41h 23m2 stops

14:33 - 09:50DCA-CWL

14h 17m2 stops

£802Delta

Find Deal

tor., 19 feb. - man., 23 feb.

10:20 - 09:16CWL-IAD

27h 56m2 stops

18:05 - 09:50IAD-CWL

10h 45m1 stop

£804Virgin Atlantic

Find Deal

tor., 19 feb. - man., 23 feb.

10:20 - 22:43CWL-DCA

17h 23m2 stops

10:25 - 09:50DCA-CWL

18h 25m2 stops

£804Delta

Find Deal

tor., 19 feb. - man., 23 feb.

17:15 - 16:05CWL-IAD

27h 50m1 stop

18:05 - 09:50IAD-CWL

10h 45m1 stop

£1,007KLM

Find Deal

man., 29 dec. - man., 5 jan.

23:30 - 15:35CWL-IAD

21h 05m1 stop

20:30 - 15:30IAD-CWL

38h 00m2 stops

£1,024Multiple Airlines

Find Deal

man., 29 dec. - man., 5 jan.

20:05 - 15:35CWL-IAD

24h 30m1 stop

17:05 - 20:55IAD-CWL

22h 50m1 stop

£1,071Multiple Airlines

Find Deal

lør., 27 dec. - lør., 3 jan.

21:20 - 23:49CWL-BWI

31h 29m3 stops

19:40 - 09:50BWI-CWL

33h 10m3 stops

£1,076Multiple Airlines

Find Deal

søn., 28 dec. - søn., 4 jan.

10:20 - 19:30CWL-IAD

14h 10m2 stops

12:23 - 09:50IAD-CWL

16h 27m2 stops

£1,151KLM

Find Deal

man., 29 dec. - man., 5 jan.

12:00 - 18:45CWL-BWI

35h 45m2 stops

20:35 - 11:30BWI-CWL

33h 55m2 stops

£2,268British Airways

Find Deal

lør., 27 dec. - lør., 3 jan.

Virgin Atlantic flights from Cardiff to Washington, D.C.

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

Virgin Atlantic

19 Feb

CWL10:20Cardiff Wales

30h 23m

2 stops

IAD11:43Washington, D.C. Dulles Intl

23 Feb

IAD18:05Washington, D.C. Dulles Intl

17h 50m

1 stop

CWL16:55Cardiff Wales

£802

Find similar

Virgin Atlantic

19 Feb

CWL10:20Cardiff Wales

27h 56m

2 stops

IAD09:16Washington, D.C. Dulles Intl

23 Feb

IAD18:05Washington, D.C. Dulles Intl

10h 45m

1 stop

CWL09:50Cardiff Wales

£804

Find similar

KLM flights from Cardiff to Washington, D.C.

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

KLM

29 Dec

CWL17:15Cardiff Wales

27h 50m

1 stop

IAD16:05Washington, D.C. Dulles Intl

5 Jan

IAD18:05Washington, D.C. Dulles Intl

10h 45m

1 stop

CWL09:50Cardiff Wales

£1,007

Find similar

KLM

28 Dec

CWL17:30Cardiff Wales

27h 35m

1 stop

IAD16:05Washington, D.C. Dulles Intl

4 Jan

IAD18:05Washington, D.C. Dulles Intl

10h 45m

1 stop

CWL09:50Cardiff Wales

£1,068

Find similar

KLM

29 Dec

CWL10:20Cardiff Wales

14h 10m

2 stops

IAD19:30Washington, D.C. Dulles Intl

5 Jan

IAD12:23Washington, D.C. Dulles Intl

16h 27m

2 stops

CWL09:50Cardiff Wales

£1,151

Find similar

Fly from

Fly to

Route

Depart

Return

Price

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

tor. 19/2

10:20-11:43

2 stops30h 23m

Washington, D.C. Dulles Intl

man. 23/2

18:05-16:55

1 stop17h 50m

£802

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

tor. 19/2

10:20-22:43

2 stops41h 23m

Washington, D.C. Reagan-National

man. 23/2

14:33-09:50

2 stops14h 17m

£802

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

tor. 19/2

10:20-09:16

2 stops27h 56m

Washington, D.C. Dulles Intl

man. 23/2

18:05-09:50

1 stop10h 45m

£804

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

tor. 19/2

10:20-22:43

2 stops17h 23m

Washington, D.C. Reagan-National

man. 23/2

10:25-09:50

2 stops18h 25m

£804

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

man. 29/12

17:15-16:05

1 stop27h 50m

Washington, D.C. Dulles Intl

man. 5/1

18:05-09:50

1 stop10h 45m

£1,007

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

man. 29/12

23:30-15:35

1 stop21h 05m

Washington, D.C. Dulles Intl

man. 5/1

20:30-15:30

2 stops38h 00m

£1,024

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

lør. 27/12

20:05-15:35

1 stop24h 30m

Washington, D.C. Dulles Intl

lør. 3/1

17:05-20:55

1 stop22h 50m

£1,071

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

søn. 28/12

21:20-23:49

3 stops31h 29m

Baltimore/Washington

søn. 4/1

19:40-09:50

3 stops33h 10m

£1,076

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

man. 29/12

10:20-19:30

2 stops14h 10m

Washington, D.C. Dulles Intl

man. 5/1

12:23-09:50

2 stops16h 27m

£1,151

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

lør. 27/12

12:00-18:45

2 stops35h 45m

Baltimore/Washington

lør. 3/1

20:35-11:30

2 stops33h 55m

£2,268

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, KLM and Virgin Atlantic 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 59% 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.

Direct flights	None

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

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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.. 14h 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).

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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.