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.

$849 Cheap Flights from Cardiff to Washington, D.C. Dulles Intl Airport in 2026/27

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.

7:50 am - 3:10 pmCWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

36h 20m2 stops Malaga Lisbon Humberto Delgado

5:15 pm - 4:45 pmIAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

18h 30m1 stop Dublin

$849Multiple Airlines

Wed, Apr 14 - Wed, Apr 28

5:30 pm - 3:45 pmCWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

27h 15m1 stop Amsterdam Schiphol

6:15 pm - 9:45 amIAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

10h 30m1 stop Amsterdam Schiphol

$957KLM

Mon, Nov 30 - Mon, Dec 7

4:10 pm - 3:45 pmCWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

28h 35m1 stop Dublin

5:15 pm - 4:45 pmIAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

18h 30m1 stop Dublin

$960Multiple Airlines

Wed, Apr 14 - Wed, Apr 28

5:30 pm - 3:45 pmCWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

27h 15m1 stop Amsterdam Schiphol

12:38 pm - 9:45 amIAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

16h 07m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

$975KLM

Mon, Nov 30 - Mon, Dec 7

5:30 pm - 4:23 pmCWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

27h 53m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

12:38 pm - 9:45 amIAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

16h 07m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

$980KLM

Mon, Nov 30 - Mon, Dec 7

7:50 am - 3:10 pmCWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

36h 20m3 stops Malaga Barcelona-El Prat Lisbon Humberto Delgado

9:55 am - 4:45 pmIAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

25h 50m2 stops Toronto Pearson Intl Dublin

$987Multiple Airlines

Wed, Apr 14 - Wed, Apr 28

5:30 pm - 4:50 pmCWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

28h 20m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

12:27 pm - 9:50 amIAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

16h 23m2 stops Detroit Metropolitan Wayne County Amsterdam Schiphol

$989Virgin Atlantic

Tue, Feb 16 - Tue, Feb 23

10:20 am - 12:41 amCWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

19h 21m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

5:45 pm - 9:50 amIAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

11h 05m1 stop Amsterdam Schiphol

$990KLM

Fri, Dec 11 - Tue, Dec 15

10:20 am - 5:30 pmCWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

36h 10m2 stops Amsterdam Schiphol New York John F Kennedy Intl

5:45 pm - 9:50 amIAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

11h 05m1 stop Amsterdam Schiphol

$1,028Virgin Atlantic

Thu, Feb 11 - Thu, Feb 25

9:50 am - 12:20 amCWL Cardiff Wales-IAD Washington, D.C. Dulles Intl

19h 30m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

10:05 am - 9:15 amIAD Washington, D.C. Dulles Intl-CWL Cardiff Wales

18h 10m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

$1,049Virgin Atlantic

Wed, Apr 14 - Wed, Apr 28

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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

Nov 30

CWL5:30 pmCardiff Wales

27h 15m

1 stop

IAD3:45 pmWashington, D.C. Dulles Intl

Dec 7

IAD6:15 pmWashington, D.C. Dulles Intl

10h 30m

1 stop

CWL9:45 amCardiff Wales

$957

KLM

Nov 30

CWL5:30 pmCardiff Wales

27h 15m

1 stop

IAD3:45 pmWashington, D.C. Dulles Intl

Dec 7

IAD12:38 pmWashington, D.C. Dulles Intl

16h 07m

2 stops

CWL9:45 amCardiff Wales

$975

KLM

Nov 30

CWL5:30 pmCardiff Wales

27h 53m

2 stops

IAD4:23 pmWashington, D.C. Dulles Intl

Dec 7

IAD12:38 pmWashington, D.C. Dulles Intl

16h 07m

2 stops

CWL9:45 amCardiff Wales

$980

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

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

Virgin Atlantic

Feb 16

CWL5:30 pmCardiff Wales

28h 20m

2 stops

IAD4:50 pmWashington, D.C. Dulles Intl

Feb 23

IAD12:27 pmWashington, D.C. Dulles Intl

16h 23m

2 stops

CWL9:50 amCardiff Wales

$989

Virgin Atlantic

Feb 11

CWL10:20 amCardiff Wales

36h 10m

2 stops

IAD5:30 pmWashington, D.C. Dulles Intl

Feb 25

IAD5:45 pmWashington, D.C. Dulles Intl

11h 05m

1 stop

CWL9:50 amCardiff Wales

$1,028

Virgin Atlantic

Apr 14

CWL9:50 amCardiff Wales

19h 30m

2 stops

IAD12:20 amWashington, D.C. Dulles Intl

Apr 28

IAD10:05 amWashington, D.C. Dulles Intl

18h 10m

2 stops

CWL9:15 amCardiff Wales

$1,049

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

CWLIAD

Cardiff Wales

Wed 4/14

7:50 am-3:10 pm

2 stops36h 20m

Washington, D.C. Dulles Intl

Wed 4/28

5:15 pm-4:45 pm

1 stop18h 30m

$849

CardiffWashington, D.C.

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

CWLIAD

Cardiff Wales

Mon 11/30

5:30 pm-3:45 pm

1 stop27h 15m

Washington, D.C. Dulles Intl

Mon 12/7

6:15 pm-9:45 am

1 stop10h 30m

$957

CardiffWashington, D.C.

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

CWLIAD

Cardiff Wales

Wed 4/14

4:10 pm-3:45 pm

1 stop28h 35m

Washington, D.C. Dulles Intl

Wed 4/28

5:15 pm-4:45 pm

1 stop18h 30m

$960

CardiffWashington, D.C.

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

CWLIAD

Cardiff Wales

Mon 11/30

5:30 pm-3:45 pm

1 stop27h 15m

Washington, D.C. Dulles Intl

Mon 12/7

12:38 pm-9:45 am

2 stops16h 07m

$975

CardiffWashington, D.C.

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

CWLIAD

Cardiff Wales

Mon 11/30

5:30 pm-4:23 pm

2 stops27h 53m

Washington, D.C. Dulles Intl

Mon 12/7

12:38 pm-9:45 am

2 stops16h 07m

$980

CardiffWashington, D.C.

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

CWLIAD

Cardiff Wales

Wed 4/14

7:50 am-3:10 pm

3 stops36h 20m

Washington, D.C. Dulles Intl

Wed 4/28

9:55 am-4:45 pm

2 stops25h 50m

$987

CardiffWashington, D.C.

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

CWLIAD

Cardiff Wales

Tue 2/16

5:30 pm-4:50 pm

2 stops28h 20m

Washington, D.C. Dulles Intl

Tue 2/23

12:27 pm-9:50 am

2 stops16h 23m

$989

Quickest round-trip

CardiffWashington, D.C.

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

CWLIAD

Cardiff Wales

Fri 12/11

10:20 am-12:41 am

2 stops19h 21m

Washington, D.C. Dulles Intl

Tue 12/15

5:45 pm-9:50 am

1 stop11h 05m

$990

CardiffWashington, D.C.

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

CWLIAD

Cardiff Wales

Thu 2/11

10:20 am-5:30 pm

2 stops36h 10m

Washington, D.C. Dulles Intl

Thu 2/25

5:45 pm-9:50 am

1 stop11h 05m

$1,028

CardiffWashington, D.C.

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

CWLIAD

Cardiff Wales

Wed 4/14

9:50 am-12:20 am

2 stops19h 30m

Washington, D.C. Dulles Intl

Wed 4/28

10:05 am-9:15 am

2 stops18h 10m

$1,049

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 53% 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

Best Price Found	$849
Fastest flight time	27h 15m
Direct flights	None

The best flight deal from Cardiff to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $849

The fastest flight from Cardiff to Washington, D.C. Dulles Intl Airport takes 27h 15m

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 15m 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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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.