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.

£390 Cheap Flights from Cardiff to Washington, D.C. in 2026

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

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

09:45 - 15:35CWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

10h 50m1 stop Amsterdam Schiphol

18:10 - 16:45IAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

17h 35m1 stop Amsterdam Schiphol

£654Virgin Atlantic

Thu, 8 Oct - Mon, 12 Oct

09:45 - 15:35CWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

10h 50m1 stop Amsterdam Schiphol

12:30 - 09:15IAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

15h 45m2 stops New York John F Kennedy Intl Amsterdam Schiphol

£655Delta

Thu, 8 Oct - Mon, 12 Oct

09:45 - 23:16CWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

18h 31m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

12:30 - 09:15IAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

15h 45m2 stops New York John F Kennedy Intl Amsterdam Schiphol

£659Delta

Thu, 8 Oct - Mon, 12 Oct

09:45 - 22:58CWL Cardiff Wales-BWI Baltimore/Washington

18h 13m2 stops Amsterdam Schiphol Boston Logan Intl

13:55 - 09:15BWI Baltimore/Washington-CWL Cardiff Wales

14h 20m2 stops Boston Logan Intl Amsterdam Schiphol

£659Delta

Thu, 8 Oct - Mon, 12 Oct

09:45 - 22:55CWL Cardiff Wales-DCA Washington, D.C. Reagan-National

18h 10m2 stops Amsterdam Schiphol New York John F Kennedy Intl

11:55 - 09:15DCA Washington, D.C. Reagan-National-CWL Cardiff Wales

16h 20m2 stops Boston Logan Intl Amsterdam Schiphol

£659Delta

Thu, 8 Oct - Mon, 12 Oct

09:45 - 15:35CWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

10h 50m1 stop Amsterdam Schiphol

17:30 - 09:15IAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

10h 45m1 stop Amsterdam Schiphol

£674Multiple Airlines

Thu, 1 Oct - Thu, 8 Oct

09:45 - 21:44CWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

16h 59m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

17:30 - 09:15IAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

10h 45m1 stop Amsterdam Schiphol

£675KLM

Thu, 1 Oct - Thu, 8 Oct

09:00 - 18:05CWL Cardiff Wales-BWI Baltimore/Washington

37h 05m2 stops Belfast City London Heathrow

18:55 - 11:45BWI Baltimore/Washington-CWL Cardiff Wales

35h 50m2 stops London Heathrow Belfast City

£720British Airways

Sun, 25 Oct - Sun, 1 Nov

17:30 - 16:55CWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

27h 25m1 stop Amsterdam Schiphol

17:45 - 17:00IAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

18h 15m1 stop Amsterdam Schiphol

£746Multiple Airlines

Sun, 25 Oct - Sun, 1 Nov

10:20 - 23:37CWL Cardiff Wales-DCA Washington, D.C. Reagan-National

17h 17m2 stops Amsterdam Schiphol Boston Logan Intl

10:10 - 09:50DCA Washington, D.C. Reagan-National-CWL Cardiff Wales

18h 40m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

£791Delta

Sun, 25 Oct - Sun, 1 Nov

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KLM flights from Cardiff to Washington, D.C.

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

KLM

1 Oct

CWL09:45Cardiff Wales

16h 59m

2 stops

IAD21:44Washington, D.C. Dulles Intl

8 Oct

IAD17:30Washington, D.C. Dulles Intl

10h 45m

1 stop

CWL09:15Cardiff Wales

£675

KLM

1 Oct

CWL09:45Cardiff Wales

16h 40m

2 stops

BWI21:25Baltimore/Washington

8 Oct

BWI14:11Baltimore/Washington

14h 04m

2 stops

CWL09:15Cardiff Wales

£1,332

KLM

25 Oct

CWL10:20Cardiff Wales

26h 56m

2 stops

BWI09:16Baltimore/Washington

1 Nov

BWI14:11Baltimore/Washington

14h 39m

2 stops

CWL09:50Cardiff Wales

£1,718

Delta flights from Cardiff to Washington, D.C.

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

Delta

8 Oct

CWL09:45Cardiff Wales

10h 50m

1 stop

IAD15:35Washington, D.C. Dulles Intl

12 Oct

IAD12:30Washington, D.C. Dulles Intl

15h 45m

2 stops

CWL09:15Cardiff Wales

£655

Delta

8 Oct

CWL09:45Cardiff Wales

18h 31m

2 stops

IAD23:16Washington, D.C. Dulles Intl

12 Oct

IAD12:30Washington, D.C. Dulles Intl

15h 45m

2 stops

CWL09:15Cardiff Wales

£659

Delta

25 Oct

CWL10:20Cardiff Wales

17h 17m

2 stops

DCA23:37Washington, D.C. Reagan-National

1 Nov

DCA10:10Washington, D.C. Reagan-National

18h 40m

2 stops

CWL09:50Cardiff Wales

£791

momondo Fare Finder

Use the filters below to find and compare flights from Cardiff to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Thu 8/10

09:45-15:35

1 stop10h 50m

Washington, D.C. Dulles Intl

Mon 12/10

18:10-16:45

1 stop17h 35m

£654

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Thu 8/10

09:45-15:35

1 stop10h 50m

Washington, D.C. Dulles Intl

Mon 12/10

12:30-09:15

2 stops15h 45m

£655

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Thu 8/10

09:45-23:16

2 stops18h 31m

Washington, D.C. Dulles Intl

Mon 12/10

12:30-09:15

2 stops15h 45m

£659

CardiffBaltimore

CWL Cardiff Wales - BWI Baltimore/Washington

CWLBWI

Cardiff Wales

Thu 8/10

09:45-22:58

2 stops18h 13m

Baltimore/Washington

Mon 12/10

13:55-09:15

2 stops14h 20m

£659

CardiffWashington, D.C.

CWL Cardiff Wales - DCA Washington, D.C. Reagan-National

CWLDCA

Cardiff Wales

Thu 8/10

09:45-22:55

2 stops18h 10m

Washington, D.C. Reagan-National

Mon 12/10

11:55-09:15

2 stops16h 20m

£659

Fastest return journey

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Thu 1/10

09:45-15:35

1 stop10h 50m

Washington, D.C. Dulles Intl

Thu 8/10

17:30-09:15

1 stop10h 45m

£674

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Thu 1/10

09:45-21:44

2 stops16h 59m

Washington, D.C. Dulles Intl

Thu 8/10

17:30-09:15

1 stop10h 45m

£675

CardiffBaltimore

CWL Cardiff Wales - BWI Baltimore/Washington

CWLBWI

Cardiff Wales

Sun 25/10

09:00-18:05

2 stops37h 05m

Baltimore/Washington

Sun 1/11

18:55-11:45

2 stops35h 50m

£720

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Sun 25/10

17:30-16:55

1 stop27h 25m

Washington, D.C. Dulles Intl

Sun 1/11

17:45-17:00

1 stop18h 15m

£746

CardiffWashington, D.C.

CWL Cardiff Wales - DCA Washington, D.C. Reagan-National

CWLDCA

Cardiff Wales

Sun 25/10

10:20-23:37

2 stops17h 17m

Washington, D.C. Reagan-National

Sun 1/11

10:10-09:50

2 stops18h 40m

£791

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted 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

Can stopping save me money on Cardiff to Washington, D.C. flights?

You could potentially save up to 61% on your flight if you consider stops on a Cardiff to Washington, D.C. flight.

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.

Best price found	£390
Fastest flight time	17h 17m
Direct flights	None

The best one-way flight to Washington, D.C. from Cardiff in the past 72 hours is £390. The best return flight deal from Cardiff to Washington, D.C. found on momondo in the last 72 hours is £654.

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

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

Frequently asked questions about flying from Cardiff to Washington, D.C.

How far is Cardiff Wales to Washington, D.C. by plane?
There are 3537.5 mi between Cardiff Wales and Washington, D.C.. 17h 17m 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.

Alexandria

Springfield

College Park

Arlington

Fairfax

Gettysburg

Linthicum Heights

National Harbor

Ellicott City

Cambridge

Glen Burnie

Laurel

Lutherville Timonium

Lexington Park

Woodbridge

Bethesda

Silver Spring

Rockville

Landover

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.

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Washington, D.C. Dulles Intl Airport

Cheap flights from Cardiff to Washington, D.C. from £390

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Cardiff to Washington, D.C. departing on 17/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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KLM flights from Cardiff to Washington, D.C.

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

Delta flights from Cardiff to Washington, D.C.

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

momondo Fare Finder

Use the filters below to find and compare flights from Cardiff to Washington, D.C. that are best for you.

See travel insights to Washington, D.C. from

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

Can stopping save me money on Cardiff to Washington, D.C. flights?

When to book flights from Cardiff to Washington, D.C.

Cheap Cardiff to Washington, D.C. (CWL to WAS) flight deals and tips

Best price found

Fastest flight time

Direct flights

Frequently asked questions about flying from Cardiff to Washington, D.C.

Travelling to a place near Washington, D.C.?

Why use momondo?

An easier way to manage your Washington, D.C. trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.

Fly your favourite airline to Washington, D.C.

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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