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.

£694 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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One-way

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17:15 - 16:05CWL-IAD

27h 50m1 stop

18:05 - 16:55IAD-CWL

17h 50m1 stop

£715KLM

Find Deal

Mon, 8 Dec - Mon, 15 Dec

10:20 - 23:08CWL-IAD

17h 48m2 stops

11:06 - 09:50IAD-CWL

17h 44m2 stops

£718Delta

Find Deal

Mon, 8 Dec - Mon, 15 Dec

10:20 - 23:08CWL-DCA

17h 48m2 stops

12:32 - 09:50DCA-CWL

16h 18m2 stops

£718Delta

Find Deal

Mon, 8 Dec - Mon, 15 Dec

17:25 - 16:05CWL-IAD

27h 40m1 stop

18:05 - 09:50IAD-CWL

10h 45m1 stop

£775KLM

Find Deal

Sat, 6 Dec - Sat, 13 Dec

10:20 - 19:19CWL-IAD

13h 59m2 stops

18:05 - 09:50IAD-CWL

10h 45m1 stop

£779KLM

Find Deal

Sat, 6 Dec - Sat, 13 Dec

10:20 - 11:53CWL-IAD

30h 33m2 stops

18:05 - 09:50IAD-CWL

10h 45m1 stop

£783Delta

Find Deal

Thu, 19 Feb - Mon, 23 Feb

10:20 - 23:08CWL-DCA

17h 48m2 stops

12:05 - 09:50DCA-CWL

16h 45m2 stops

£783Delta

Find Deal

Thu, 19 Feb - Mon, 23 Feb

17:25 - 18:42CWL-IAD

30h 17m2 stops

18:05 - 09:50IAD-CWL

10h 45m1 stop

£785Virgin Atlantic

Find Deal

Thu, 19 Feb - Mon, 23 Feb

10:20 - 23:08CWL-DCA

41h 48m2 stops

14:30 - 09:50DCA-CWL

14h 20m2 stops

£785Delta

Find Deal

Thu, 19 Feb - Mon, 23 Feb

10:20 - 11:39CWL-IAD

30h 19m2 stops

17:59 - 09:50IAD-CWL

34h 51m2 stops

£787Virgin Atlantic

Find Deal

Sat, 6 Dec - Sat, 13 Dec

KLM flights from Cardiff to Washington, D.C.

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

KLM

8 Dec

CWL17:15Cardiff Wales

27h 50m

1 stop

IAD16:05Washington, D.C. Dulles Intl

15 Dec

IAD18:05Washington, D.C. Dulles Intl

17h 50m

1 stop

CWL16:55Cardiff Wales

£715

Find similar

KLM

6 Dec

CWL17:25Cardiff Wales

27h 40m

1 stop

IAD16:05Washington, D.C. Dulles Intl

13 Dec

IAD18:05Washington, D.C. Dulles Intl

10h 45m

1 stop

CWL09:50Cardiff Wales

£775

Find similar

KLM

6 Dec

CWL10:20Cardiff Wales

13h 59m

2 stops

IAD19:19Washington, D.C. Dulles Intl

13 Dec

IAD18:05Washington, D.C. Dulles Intl

10h 45m

1 stop

CWL09:50Cardiff Wales

£779

Find similar

Delta flights from Cardiff to Washington, D.C.

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

Delta

8 Dec

CWL10:20Cardiff Wales

17h 48m

2 stops

IAD23:08Washington, D.C. Dulles Intl

15 Dec

IAD11:06Washington, D.C. Dulles Intl

17h 44m

2 stops

CWL09:50Cardiff Wales

£718

Find similar

Delta

19 Feb

CWL10:20Cardiff Wales

30h 33m

2 stops

IAD11:53Washington, D.C. Dulles Intl

23 Feb

IAD18:05Washington, D.C. Dulles Intl

10h 45m

1 stop

CWL09:50Cardiff Wales

£783

Find similar

Delta

19 Feb

CWL10:20Cardiff Wales

41h 48m

2 stops

DCA23:08Washington, D.C. Reagan-National

23 Feb

DCA14:30Washington, D.C. Reagan-National

14h 20m

2 stops

CWL09:50Cardiff Wales

£785

Find similar

Fly from

Fly to

Route

Depart

Return

Price

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Mon 8/12

17:15-16:05

1 stop27h 50m

Washington, D.C. Dulles Intl

Mon 15/12

18:05-16:55

1 stop17h 50m

£715

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Mon 8/12

10:20-23:08

2 stops17h 48m

Washington, D.C. Dulles Intl

Mon 15/12

11:06-09:50

2 stops17h 44m

£718

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Mon 8/12

10:20-23:08

2 stops17h 48m

Washington, D.C. Reagan-National

Mon 15/12

12:32-09:50

2 stops16h 18m

£718

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 6/12

17:25-16:05

1 stop27h 40m

Washington, D.C. Dulles Intl

Sat 13/12

18:05-09:50

1 stop10h 45m

£775

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 6/12

10:20-19:19

2 stops13h 59m

Washington, D.C. Dulles Intl

Sat 13/12

18:05-09:50

1 stop10h 45m

£779

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 19/2

10:20-11:53

2 stops30h 33m

Washington, D.C. Dulles Intl

Mon 23/2

18:05-09:50

1 stop10h 45m

£783

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Thu 19/2

10:20-23:08

2 stops17h 48m

Washington, D.C. Reagan-National

Mon 23/2

12:05-09:50

2 stops16h 45m

£783

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 19/2

17:25-18:42

2 stops30h 17m

Washington, D.C. Dulles Intl

Mon 23/2

18:05-09:50

1 stop10h 45m

£785

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Thu 19/2

10:20-23:08

2 stops41h 48m

Washington, D.C. Reagan-National

Mon 23/2

14:30-09:50

2 stops14h 20m

£785

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 6/12

10:20-11:39

2 stops30h 19m

Washington, D.C. Dulles Intl

Sat 13/12

17:59-09:50

2 stops34h 51m

£787

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 57% 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..

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.. 13h 59m 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.