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.

£598 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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08:35 - 15:35CWL-IAD

36h 00m2 stops

21:45 - 08:05IAD-CWL

53h 20m2 stops

£598British Airways

Find Deal

Thu, 26 Feb - Mon, 2 Mar

10:20 - 19:09CWL-IAD

13h 49m2 stops

18:05 - 16:55IAD-CWL

17h 50m1 stop

£623Delta

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Thu, 26 Feb - Mon, 2 Mar

10:20 - 22:48CWL-DCA

17h 28m2 stops

11:11 - 09:50DCA-CWL

17h 39m2 stops

£623Delta

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Thu, 5 Feb - Mon, 9 Feb

10:20 - 22:53CWL-DCA

17h 33m2 stops

13:05 - 09:45DCA-CWL

15h 40m2 stops

£649KLM

Find Deal

Sat, 10 Jan - Sat, 17 Jan

17:25 - 16:05CWL-IAD

27h 40m1 stop

18:05 - 16:55IAD-CWL

17h 50m1 stop

£660KLM

Find Deal

Thu, 26 Feb - Mon, 2 Mar

17:25 - 11:43CWL-IAD

47h 18m2 stops

19:49 - 09:50IAD-CWL

33h 01m2 stops

£670Virgin Atlantic

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Sat, 10 Jan - Sat, 17 Jan

10:20 - 19:09CWL-IAD

13h 49m2 stops

18:05 - 16:50IAD-CWL

17h 45m1 stop

£684Delta

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Sat, 10 Jan - Sat, 17 Jan

10:20 - 15:35CWL-IAD

34h 15m3 stops

17:05 - 09:45IAD-CWL

35h 40m3 stops

£732Multiple Airlines

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Fri, 9 Jan - Fri, 16 Jan

17:25 - 18:40CWL-BWI

30h 15m3 stops

19:40 - 20:55BWI-CWL

20h 15m2 stops

£737Multiple Airlines

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Sat, 10 Jan - Sat, 17 Jan

17:25 - 20:28CWL-BWI

32h 03m2 stops

18:03 - 09:50BWI-CWL

34h 47m2 stops

£845Virgin Atlantic

Find Deal

Sat, 10 Jan - Sat, 17 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

10 Jan

CWL17:25Cardiff Wales

47h 18m

2 stops

IAD11:43Washington, D.C. Dulles Intl

17 Jan

IAD19:49Washington, D.C. Dulles Intl

33h 01m

2 stops

CWL09:50Cardiff Wales

£670

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Virgin Atlantic

9 Jan

CWL17:15Cardiff Wales

30h 54m

2 stops

IAD19:09Washington, D.C. Dulles Intl

16 Jan

IAD19:49Washington, D.C. Dulles Intl

32h 56m

2 stops

CWL09:45Cardiff Wales

£828

Find similar

Virgin Atlantic

10 Jan

CWL17:25Cardiff Wales

32h 03m

2 stops

BWI20:28Baltimore/Washington

17 Jan

BWI18:03Baltimore/Washington

34h 47m

2 stops

CWL09:50Cardiff Wales

£845

Find similar

KLM flights from Cardiff to Washington, D.C.

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

KLM

10 Jan

CWL10:20Cardiff Wales

17h 33m

2 stops

DCA22:53Washington, D.C. Reagan-National

17 Jan

DCA13:05Washington, D.C. Reagan-National

15h 40m

2 stops

CWL09:45Cardiff Wales

£649

Find similar

KLM

26 Feb

CWL17:25Cardiff Wales

27h 40m

1 stop

IAD16:05Washington, D.C. Dulles Intl

2 Mar

IAD18:05Washington, D.C. Dulles Intl

17h 50m

1 stop

CWL16:55Cardiff Wales

£660

Find similar

KLM

26 Feb

CWL17:25Cardiff Wales

27h 40m

1 stop

IAD16:05Washington, D.C. Dulles Intl

2 Mar

IAD18:05Washington, D.C. Dulles Intl

10h 45m

1 stop

CWL09:50Cardiff Wales

£662

Find similar

Fly from

Fly to

Route

Depart

Return

Price

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 26/2

08:35-15:35

2 stops36h 00m

Washington, D.C. Dulles Intl

Mon 2/3

21:45-08:05

2 stops53h 20m

£598

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 26/2

10:20-19:09

2 stops13h 49m

Washington, D.C. Dulles Intl

Mon 2/3

18:05-16:55

1 stop17h 50m

£623

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Thu 5/2

10:20-22:48

2 stops17h 28m

Washington, D.C. Reagan-National

Mon 9/2

11:11-09:50

2 stops17h 39m

£623

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Sat 10/1

10:20-22:53

2 stops17h 33m

Washington, D.C. Reagan-National

Sat 17/1

13:05-09:45

2 stops15h 40m

£649

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 26/2

17:25-16:05

1 stop27h 40m

Washington, D.C. Dulles Intl

Mon 2/3

18:05-16:55

1 stop17h 50m

£660

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 10/1

17:25-11:43

2 stops47h 18m

Washington, D.C. Dulles Intl

Sat 17/1

19:49-09:50

2 stops33h 01m

£670

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 10/1

10:20-19:09

2 stops13h 49m

Washington, D.C. Dulles Intl

Sat 17/1

18:05-16:50

1 stop17h 45m

£684

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Fri 9/1

10:20-15:35

3 stops34h 15m

Washington, D.C. Dulles Intl

Fri 16/1

17:05-09:45

3 stops35h 40m

£732

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

Sat 10/1

17:25-18:40

3 stops30h 15m

Baltimore/Washington

Sat 17/1

19:40-20:55

2 stops20h 15m

£737

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

Sat 10/1

17:25-20:28

2 stops32h 03m

Baltimore/Washington

Sat 17/1

18:03-09:50

2 stops34h 47m

£845

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 69% 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 28m
Direct flights	None

The fastest flight from Cardiff to Washington, D.C. takes 17h 28m

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.. 13h 49m 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.