When did momondo last update prices for flights from Cardiff Wales Airport to Washington, D.C. Dulles Intl Airport?

Prices for flights from Cardiff Wales Airport to Washington, D.C. Dulles Intl Airport refresh daily.

How old do you have to be to fly from Cardiff Wales Airport to Washington, D.C. Dulles Intl Airport?

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. Dulles Intl Airport.

What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$1,074 Cheap Flights from Cardiff to Washington, D.C. Dulles Intl Airport in 2026

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

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Cheap round-trip flights

Enter your travel dates to find the best prices.

11:50 pm - 7:00 pm

CWL

IAD

24h 10m

1 stop

5:15 pm - 9:20 pm

IAD

CWL

23h 05m

1 stop

$1,074Multiple Airlines

週三, 9月 2 - 週六, 9月 5

5:15 pm - 6:58 pm

CWL

IAD

30h 43m

3 stops

9:45 am - 10:15 am

IAD

CWL

19h 30m

2 stops

$1,168Multiple Airlines

週五, 5月 29 - 週五, 6月 5

5:15 pm - 6:58 pm

CWL

IAD

30h 43m

3 stops

9:55 am - 10:15 am

IAD

CWL

19h 20m

1 stop

$1,185Multiple Airlines

週五, 5月 29 - 週五, 6月 5

5:15 pm - 3:35 pm

CWL

IAD

27h 20m

1 stop

5:40 pm - 9:15 am

IAD

CWL

10h 35m

1 stop

$1,193KLM

週日, 5月 3 - 週日, 5月 10

5:15 pm - 3:35 pm

CWL

IAD

27h 20m

1 stop

9:45 pm - 4:45 pm

IAD

CWL

14h 00m

2 stops

$1,219KLM

週日, 5月 3 - 週日, 5月 10

11:50 pm - 3:45 pm

CWL

IAD

20h 55m

1 stop

10:35 pm - 9:20 pm

IAD

CWL

17h 45m

2 stops

$1,257Multiple Airlines

週三, 9月 2 - 週六, 9月 5

9:50 am - 9:05 pm

CWL

IAD

16h 15m

2 stops

9:45 pm - 4:45 pm

IAD

CWL

14h 00m

2 stops

$1,268KLM

週日, 5月 3 - 週日, 5月 10

9:45 am - 3:35 pm

CWL

IAD

10h 50m

1 stop

5:40 pm - 9:15 am

IAD

CWL

10h 35m

1 stop

$1,313KLM

週五, 5月 29 - 週五, 6月 5

9:45 am - 9:24 pm

CWL

IAD

16h 39m

2 stops

5:40 pm - 9:15 am

IAD

CWL

10h 35m

1 stop

$1,349KLM

週五, 5月 29 - 週五, 6月 5

5:15 pm - 6:58 pm

CWL

IAD

30h 43m

3 stops

11:30 am - 9:15 am

IAD

CWL

16h 45m

3 stops

$1,616Multiple Airlines

週五, 5月 29 - 週五, 6月 5

KLM flights from Cardiff to Washington, D.C. Dulles Intl Airport

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

KLM

May 3

CWL5:15 pmCardiff Wales

27h 20m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

May 10

IAD5:40 pmWashington, D.C. Dulles Intl

10h 35m

1 stop

CWL9:15 amCardiff Wales

$1,193

KLM

May 3

CWL5:15 pmCardiff Wales

27h 20m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

May 10

IAD9:45 pmWashington, D.C. Dulles Intl

14h 00m

2 stops

CWL4:45 pmCardiff Wales

$1,219

KLM

May 3

CWL9:50 amCardiff Wales

16h 15m

2 stops

IAD9:05 pmWashington, D.C. Dulles Intl

May 10

IAD9:45 pmWashington, D.C. Dulles Intl

14h 00m

2 stops

CWL4:45 pmCardiff Wales

$1,268

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

週三 9/2

11:50 pm-7:00 pm

1 stop24h 10m

Washington, D.C. Dulles Intl

週六 9/5

5:15 pm-9:20 pm

1 stop23h 05m

$1,074

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

週五 5/29

5:15 pm-6:58 pm

3 stops30h 43m

Washington, D.C. Dulles Intl

週五 6/5

9:45 am-10:15 am

2 stops19h 30m

$1,168

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

週五 5/29

5:15 pm-6:58 pm

3 stops30h 43m

Washington, D.C. Dulles Intl

週五 6/5

9:55 am-10:15 am

1 stop19h 20m

$1,185

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

週日 5/3

5:15 pm-3:35 pm

1 stop27h 20m

Washington, D.C. Dulles Intl

週日 5/10

5:40 pm-9:15 am

1 stop10h 35m

$1,193

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

週日 5/3

5:15 pm-3:35 pm

1 stop27h 20m

Washington, D.C. Dulles Intl

週日 5/10

9:45 pm-4:45 pm

2 stops14h 00m

$1,219

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

週三 9/2

11:50 pm-3:45 pm

1 stop20h 55m

Washington, D.C. Dulles Intl

週六 9/5

10:35 pm-9:20 pm

2 stops17h 45m

$1,257

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

週日 5/3

9:50 am-9:05 pm

2 stops16h 15m

Washington, D.C. Dulles Intl

週日 5/10

9:45 pm-4:45 pm

2 stops14h 00m

$1,268

Quickest round-trip

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

週五 5/29

9:45 am-3:35 pm

1 stop10h 50m

Washington, D.C. Dulles Intl

週五 6/5

5:40 pm-9:15 am

1 stop10h 35m

$1,313

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

週五 5/29

9:45 am-9:24 pm

2 stops16h 39m

Washington, D.C. Dulles Intl

週五 6/5

5:40 pm-9:15 am

1 stop10h 35m

$1,349

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

週五 5/29

5:15 pm-6:58 pm

3 stops30h 43m

Washington, D.C. Dulles Intl

週五 6/5

11:30 am-9:15 am

3 stops16h 45m

$1,616

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

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. Dulles Intl Airport flights?

You could potentially save up to 7% on your flight if you consider stops on a Cardiff to Washington, D.C. Dulles Intl Airport flight.

When to book flights from Cardiff to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Cardiff to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Cardiff to Washington, D.C. Dulles Intl Airport (CWL to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cardiff to Washington, D.C. Dulles Intl Airport

Fastest flight time	10h 50m
Direct flights	None

The fastest flight from Cardiff to Washington, D.C. Dulles Intl Airport takes 10h 50m

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

Search flight deals

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

How far is Cardiff Wales to Washington, D.C. Dulles Intl by plane?
Cardiff Wales and Washington, D.C. Dulles Intl are 3552.6 mi apart from one another. Typically, this will take 10h 50m by plane in normal conditions.
When did momondo last update prices for flights from Cardiff Wales Airport to Washington, D.C. Dulles Intl Airport?
Prices for flights from Cardiff Wales Airport to Washington, D.C. Dulles Intl Airport refresh daily.
How old do you have to be to fly from Cardiff Wales Airport to Washington, D.C. Dulles Intl Airport?
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. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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National Harbor

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Woodbridge

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Colonial Beach

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Tysons

Linthicum Heights

Bethesda

Fairfax

Why use momondo?

Why should I use momondo to find a flight deal from Cardiff to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Cardiff.

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.?

Once all potential Cardiff to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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 offers price alerts on flights to Washington, D.C. from Cardiff. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.