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Cheap flights from Washington, D.C. Dulles Intl Airport to Cardiff from £225

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Cardiff departing on 12/1. 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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0 bags
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Cardiff

Cheap return flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
06:00 - 09:50
IAD
-
CWL
22h 50m2 stops
Virgin Atlantic Logo
10:20 - 19:09
CWL
-
IAD
13h 49m2 stops
£556Virgin Atlantic
Tue, 20 Jan - Tue, 27 Jan
KLM Logo
12:40 - 09:50
IAD
-
CWL
16h 10m2 stops
KLM Logo
17:25 - 16:05
CWL
-
IAD
27h 40m1 stop
£587KLM
Wed, 21 Jan - Wed, 28 Jan
Virgin Atlantic Logo
12:32 - 09:50
IAD
-
CWL
16h 18m2 stops
Virgin Atlantic Logo
10:20 - 19:09
CWL
-
IAD
13h 49m2 stops
£595Virgin Atlantic
Wed, 21 Jan - Wed, 28 Jan
Virgin Atlantic Logo
13:19 - 09:50
IAD
-
CWL
16h 31m2 stops
Virgin Atlantic Logo
09:50 - 15:35
CWL
-
IAD
10h 45m1 stop
£673Virgin Atlantic
Wed, 25 Mar - Sun, 29 Mar
Multiple Airlines Logo
17:05 - 10:05
IAD
-
CWL
12h 00m1 stop
Multiple Airlines Logo
15:55 - 15:35
CWL
-
IAD
28h 40m1 stop
£743Multiple Airlines
Wed, 21 Jan - Wed, 28 Jan
KLM Logo
19:05 - 09:50
IAD
-
CWL
10h 45m1 stop
KLM Logo
09:50 - 15:35
CWL
-
IAD
10h 45m1 stop
£745KLM
Wed, 25 Mar - Sun, 29 Mar
Virgin Atlantic Logo
13:19 - 09:50
IAD
-
CWL
16h 31m2 stops
Virgin Atlantic Logo
09:50 - 19:19
CWL
-
IAD
14h 29m2 stops
£805Virgin Atlantic
Wed, 25 Mar - Sun, 29 Mar
Multiple Airlines Logo
19:40 - 15:30
IAD
-
CWL
14h 50m2 stops
Multiple Airlines Logo
10:20 - 20:54
CWL
-
IAD
39h 34m3 stops
£830Multiple Airlines
Tue, 20 Jan - Tue, 27 Jan
Multiple Airlines Logo
09:45 - 15:30
IAD
-
CWL
24h 45m3 stops
Multiple Airlines Logo
10:20 - 20:54
CWL
-
IAD
39h 34m3 stops
£865Multiple Airlines
Tue, 20 Jan - Tue, 27 Jan
Multiple Airlines Logo
09:45 - 10:05
IAD
-
CWL
19h 20m3 stops
Multiple Airlines Logo
15:55 - 15:15
CWL
-
IAD
28h 20m2 stops
£903Multiple Airlines
Wed, 21 Jan - Wed, 28 Jan

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

Our best KLM deals on Washington, D.C. Dulles Intl Airport to Cardiff flight tickets
KLM
21 Jan
IAD12:40Washington, D.C. Dulles Intl
16h 10m
2 stops
CWL09:50Cardiff Wales
28 Jan
CWL17:25Cardiff Wales
27h 40m
1 stop
IAD16:05Washington, D.C. Dulles Intl
£587
Find similar
KLM
25 Mar
IAD19:05Washington, D.C. Dulles Intl
10h 45m
1 stop
CWL09:50Cardiff Wales
29 Mar
CWL09:50Cardiff Wales
10h 45m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£745
Find similar

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

Our best Virgin Atlantic deals on Washington, D.C. Dulles Intl Airport to Cardiff flight tickets
Virgin Atlantic
20 Jan
IAD06:00Washington, D.C. Dulles Intl
22h 50m
2 stops
CWL09:50Cardiff Wales
27 Jan
CWL10:20Cardiff Wales
13h 49m
2 stops
IAD19:09Washington, D.C. Dulles Intl
£556
Find similar
Virgin Atlantic
21 Jan
IAD12:32Washington, D.C. Dulles Intl
16h 18m
2 stops
CWL09:50Cardiff Wales
28 Jan
CWL10:20Cardiff Wales
13h 49m
2 stops
IAD19:09Washington, D.C. Dulles Intl
£595
Find similar
Virgin Atlantic
25 Mar
IAD13:19Washington, D.C. Dulles Intl
16h 31m
2 stops
CWL09:50Cardiff Wales
29 Mar
CWL09:50Cardiff Wales
10h 45m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£673
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. Dulles Intl Airport to Cardiff that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 8 December 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Cardiff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Tue 20/1

06:00-09:50

2 stops22h 50m

Cardiff Wales

Tue 27/1

10:20-19:09

2 stops13h 49m

£556

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 21/1

12:40-09:50

2 stops16h 10m

Cardiff Wales

Wed 28/1

17:25-16:05

1 stop27h 40m

£587

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 21/1

12:32-09:50

2 stops16h 18m

Cardiff Wales

Wed 28/1

10:20-19:09

2 stops13h 49m

£595

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 25/3

13:19-09:50

2 stops16h 31m

Cardiff Wales

Sun 29/3

09:50-15:35

1 stop10h 45m

£673

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 21/1

17:05-10:05

1 stop12h 00m

Cardiff Wales

Wed 28/1

15:55-15:35

1 stop28h 40m

£743

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 25/3

19:05-09:50

1 stop10h 45m

Cardiff Wales

Sun 29/3

09:50-15:35

1 stop10h 45m

£745

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 25/3

13:19-09:50

2 stops16h 31m

Cardiff Wales

Sun 29/3

09:50-19:19

2 stops14h 29m

£805

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Tue 20/1

19:40-15:30

2 stops14h 50m

Cardiff Wales

Tue 27/1

10:20-20:54

3 stops39h 34m

£830

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Tue 20/1

09:45-15:30

3 stops24h 45m

Cardiff Wales

Tue 27/1

10:20-20:54

3 stops39h 34m

£865

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 21/1

09:45-10:05

3 stops19h 20m

Cardiff Wales

Wed 28/1

15:55-15:15

2 stops28h 20m

£903

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Cardiff from

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

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

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Cardiff Wales?

Delta is the most popular carrier operating from Washington, D.C. Dulles Intl to Cardiff Wales

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

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

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

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

Fastest flight time

10h 35m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Cardiff takes 10h 35m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Cardiff. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Cardiff.
Search flight deals

  • How far is Washington, D.C. Dulles Intl to Cardiff Wales by plane?

    A flight from Washington, D.C. Dulles Intl to Cardiff Wales will travel around 3552.6 mi. Flights usually cover this in 10h 45m, depending on flying conditions and air traffic around both airports.

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Cardiff Wales Airport.

  • What documentation or ID do you need to fly to Cardiff Wales Airport?

    The required travel and health documents for your Cardiff Wales Airport 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 Cardiff Wales Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near Cardiff?

Book flights to Cardiff if you plan to visit one of these locations
Barry
Bridgend

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Cardiff. momondo saves you time and could save you money on your trip.

Can I find flights from Washington, D.C. to Cardiff with flexible booking policies on momondo?

Flights from Washington, D.C. to Cardiff with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Washington, D.C. to Cardiff?

Once all potential Washington, D.C. to Cardiff 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 Washington, D.C. to Cardiff right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Cardiff from Washington, D.C.. 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.

An easier way to manage your Cardiff trip

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