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.

$705 Cheap Flights from Cardiff to Washington, D.C. Dulles Intl Airport in 2026

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0 bags

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

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:50 pm - 9:26 pm

CWL

IAD

27h 36m

2 stops

4:20 pm - 10:15 am

IAD

CWL

12h 55m

1 stop

$705Multiple Airlines

Thu, Jul 2 - Sun, Jul 12

10:50 pm - 9:26 pm

CWL

IAD

27h 36m

2 stops

8:18 am - 10:15 am

IAD

CWL

20h 57m

2 stops

$747Multiple Airlines

Thu, Jul 2 - Sun, Jul 12

11:35 am - 9:26 pm

CWL

IAD

14h 51m

1 stop

4:20 pm - 10:15 am

IAD

CWL

12h 55m

1 stop

$873Multiple Airlines

Thu, Jul 2 - Sun, Jul 12

5:15 pm - 9:26 pm

CWL

IAD

33h 11m

3 stops

8:18 am - 10:15 am

IAD

CWL

20h 57m

2 stops

$944Multiple Airlines

Thu, Jul 2 - Sun, Jul 12

11:35 am - 7:44 am

CWL

IAD

25h 09m

2 stops

8:18 am - 10:20 pm

IAD

CWL

33h 02m

3 stops

$946Multiple Airlines

Sat, Jun 27 - Thu, Jul 2

11:35 am - 7:44 am

CWL

IAD

25h 09m

2 stops

4:20 pm - 10:20 pm

IAD

CWL

25h 00m

2 stops

$1,041Multiple Airlines

Sat, Jun 27 - Thu, Jul 2

11:35 am - 7:44 am

CWL

IAD

25h 09m

2 stops

5:40 pm - 9:15 am

IAD

CWL

10h 35m

1 stop

$1,163Multiple Airlines

Sat, Jun 27 - Thu, Jul 2

11:35 am - 9:26 pm

CWL

IAD

14h 51m

1 stop

5:40 pm - 9:15 am

IAD

CWL

10h 35m

1 stop

$1,256Multiple Airlines

Sat, Jun 27 - Thu, Jul 2

9:45 am - 3:10 pm

CWL

IAD

34h 25m

3 stops

5:15 pm - 9:15 am

IAD

CWL

35h 00m

3 stops

$1,859Multiple Airlines

Sat, Jun 27 - Thu, Jul 2

5:15 pm - 3:35 pm

CWL

IAD

27h 20m

1 stop

6:10 pm - 4:45 pm

IAD

CWL

17h 35m

1 stop

$5,551Air France

Mon, Jul 20 - Mon, Jul 27

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

Thu 7/2

10:50 pm-9:26 pm

2 stops27h 36m

Washington, D.C. Dulles Intl

Sun 7/12

4:20 pm-10:15 am

1 stop12h 55m

$705

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 7/2

10:50 pm-9:26 pm

2 stops27h 36m

Washington, D.C. Dulles Intl

Sun 7/12

8:18 am-10:15 am

2 stops20h 57m

$747

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 7/2

11:35 am-9:26 pm

1 stop14h 51m

Washington, D.C. Dulles Intl

Sun 7/12

4:20 pm-10:15 am

1 stop12h 55m

$873

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 7/2

5:15 pm-9:26 pm

3 stops33h 11m

Washington, D.C. Dulles Intl

Sun 7/12

8:18 am-10:15 am

2 stops20h 57m

$944

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 6/27

11:35 am-7:44 am

2 stops25h 09m

Washington, D.C. Dulles Intl

Thu 7/2

8:18 am-10:20 pm

3 stops33h 02m

$946

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 6/27

11:35 am-7:44 am

2 stops25h 09m

Washington, D.C. Dulles Intl

Thu 7/2

4:20 pm-10:20 pm

2 stops25h 00m

$1,041

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 6/27

11:35 am-7:44 am

2 stops25h 09m

Washington, D.C. Dulles Intl

Thu 7/2

5:40 pm-9:15 am

1 stop10h 35m

$1,163

Quickest round-trip

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 6/27

11:35 am-9:26 pm

1 stop14h 51m

Washington, D.C. Dulles Intl

Thu 7/2

5:40 pm-9:15 am

1 stop10h 35m

$1,256

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 6/27

9:45 am-3:10 pm

3 stops34h 25m

Washington, D.C. Dulles Intl

Thu 7/2

5:15 pm-9:15 am

3 stops35h 00m

$1,859

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Mon 7/20

5:15 pm-3:35 pm

1 stop27h 20m

Washington, D.C. Dulles Intl

Mon 7/27

6:10 pm-4:45 pm

1 stop17h 35m

$5,551

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	27h 36m
Direct flights	None

The fastest flight from Cardiff to Washington, D.C. Dulles Intl Airport takes 27h 36m

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 27h 36m 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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Laurel

Gaithersburg

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Silver Spring

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Sterling

Linthicum Heights

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Springfield

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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.