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Cheap flights from District of Columbia to Cardiff from £469

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia to Cardiff departing on 17/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from District of Columbia to Cardiff

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:40 - 21:20IAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
19h 40m1 stop Dublin
Multiple Airlines Logo
10:25 - 18:50CWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
37h 25m2 stops Alicante Madrid Barajas
£695Multiple Airlines
Sat, 10 Oct - Mon, 19 Oct
Multiple Airlines Logo
20:30 - 21:20IAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
19h 50m3 stops Reykjavik Keflavik Intl Manchester Dublin
Multiple Airlines Logo
12:30 - 19:25CWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
35h 55m2 stops Alicante Dublin
£779Multiple Airlines
Sat, 19 Sep - Sat, 26 Sep
Multiple Airlines Logo
20:30 - 21:20IAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
19h 50m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
10:25 - 15:10CWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
33h 45m2 stops Alicante Lisbon Humberto Delgado
£794Multiple Airlines
Sat, 10 Oct - Mon, 19 Oct
Multiple Airlines Logo
20:40 - 21:20IAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
19h 40m1 stop Dublin
Multiple Airlines Logo
07:30 - 15:45CWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
13h 15m1 stop Dublin
£805Multiple Airlines
Sat, 19 Sep - Sat, 26 Sep
Multiple Airlines Logo
09:55 - 21:20IAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
30h 25m2 stops Toronto Pearson Intl Dublin
Multiple Airlines Logo
07:30 - 19:10CWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
16h 40m1 stop Dublin
£808Multiple Airlines
Sat, 19 Sep - Sat, 26 Sep
Multiple Airlines Logo
06:00 - 21:20DCA  Washington, D.C. Reagan-National-CWL Cardiff Wales
34h 20m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Dublin
Multiple Airlines Logo
07:30 - 22:34CWL  Cardiff Wales-DCA Washington, D.C. Reagan-National
20h 04m2 stops Dublin Toronto Pearson Intl
£814Multiple Airlines
Sat, 19 Sep - Sat, 26 Sep
Multiple Airlines Logo
20:30 - 21:20IAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
19h 50m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
13:35 - 20:25CWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
35h 50m3 stops Malaga Athens Eleftherios V. Toronto Pearson Intl
£816Multiple Airlines
Sat, 10 Oct - Mon, 19 Oct
Multiple Airlines Logo
09:45 - 21:20IAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
30h 35m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Dublin
Multiple Airlines Logo
07:30 - 19:10CWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
16h 40m1 stop Dublin
£817Multiple Airlines
Sat, 19 Sep - Sat, 26 Sep
Multiple Airlines Logo
20:30 - 21:20IAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
19h 50m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
12:30 - 19:25CWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
35h 55m2 stops Alicante Dublin
£821Multiple Airlines
Sat, 19 Sep - Sat, 26 Sep
Multiple Airlines Logo
17:05 - 15:40IAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
17h 35m1 stop Dublin
Multiple Airlines Logo
08:35 - 15:35CWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
12h 00m1 stop Dublin
£825Multiple Airlines
Thu, 3 Dec - Mon, 7 Dec

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Delta flights from District of Columbia to Cardiff

Our best Delta deals on District of Columbia to Cardiff flight tickets
Delta
3 Dec
DCA11:05Washington, D.C. Reagan-National
17h 45m
2 stops
CWL09:50Cardiff Wales
7 Dec
CWL10:20Cardiff Wales
17h 28m
2 stops
DCA22:48Washington, D.C. Reagan-National
£911
Delta
10 Oct
IAD17:40Washington, D.C. Dulles Intl
10h 35m
1 stop
CWL09:15Cardiff Wales
19 Oct
CWL09:45Cardiff Wales
10h 50m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£911
Delta
31 Aug
IAD12:29Washington, D.C. Dulles Intl
15h 46m
2 stops
CWL09:15Cardiff Wales
9 Sept
CWL09:45Cardiff Wales
15h 29m
2 stops
IAD20:14Washington, D.C. Dulles Intl
£934

KLM flights from District of Columbia to Cardiff

Our best KLM deals on District of Columbia to Cardiff flight tickets
KLM
15 Nov
IAD17:45Washington, D.C. Dulles Intl
18h 15m
1 stop
CWL17:00Cardiff Wales
22 Nov
CWL17:30Cardiff Wales
27h 25m
1 stop
IAD15:55Washington, D.C. Dulles Intl
£863
KLM
3 Dec
IAD12:35Washington, D.C. Dulles Intl
16h 15m
2 stops
CWL09:50Cardiff Wales
7 Dec
CWL17:30Cardiff Wales
27h 15m
1 stop
IAD15:45Washington, D.C. Dulles Intl
£866
KLM
15 Nov
IAD19:27Washington, D.C. Dulles Intl
16h 33m
2 stops
CWL17:00Cardiff Wales
22 Nov
CWL17:30Cardiff Wales
27h 56m
2 stops
IAD16:26Washington, D.C. Dulles Intl
£874

momondo Fare Finder

 
Customise your flight search to find flights from District of Columbia 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 August 2026.
Use the filters below to find and compare flights from District of Columbia to Cardiff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Cardiff

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

IADCWL

Washington, D.C. Dulles Intl

Sat 10/10

20:40-21:20

1 stop19h 40m

Cardiff Wales

Mon 19/10

10:25-18:50

2 stops37h 25m

£695

Washington, D.C.Cardiff

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

IADCWL

Washington, D.C. Dulles Intl

Sat 19/9

20:30-21:20

3 stops19h 50m

Cardiff Wales

Sat 26/9

12:30-19:25

2 stops35h 55m

£779

Washington, D.C.Cardiff

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

IADCWL

Washington, D.C. Dulles Intl

Sat 10/10

20:30-21:20

2 stops19h 50m

Cardiff Wales

Mon 19/10

10:25-15:10

2 stops33h 45m

£794

Washington, D.C.Cardiff

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

IADCWL

Washington, D.C. Dulles Intl

Sat 19/9

20:40-21:20

1 stop19h 40m

Cardiff Wales

Sat 26/9

07:30-15:45

1 stop13h 15m

£805

Washington, D.C.Cardiff

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

IADCWL

Washington, D.C. Dulles Intl

Sat 19/9

09:55-21:20

2 stops30h 25m

Cardiff Wales

Sat 26/9

07:30-19:10

1 stop16h 40m

£808

Washington, D.C.Cardiff

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

DCACWL

Washington, D.C. Reagan-National

Sat 19/9

06:00-21:20

3 stops34h 20m

Cardiff Wales

Sat 26/9

07:30-22:34

2 stops20h 04m

£814

Washington, D.C.Cardiff

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

IADCWL

Washington, D.C. Dulles Intl

Sat 10/10

20:30-21:20

2 stops19h 50m

Cardiff Wales

Mon 19/10

13:35-20:25

3 stops35h 50m

£816

Washington, D.C.Cardiff

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

IADCWL

Washington, D.C. Dulles Intl

Sat 19/9

09:45-21:20

3 stops30h 35m

Cardiff Wales

Sat 26/9

07:30-19:10

1 stop16h 40m

£816

Washington, D.C.Cardiff

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

IADCWL

Washington, D.C. Dulles Intl

Sat 19/9

20:30-21:20

2 stops19h 50m

Cardiff Wales

Sat 26/9

12:30-19:25

2 stops35h 55m

£821
Fastest return journey

Washington, D.C.Cardiff

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

IADCWL

Washington, D.C. Dulles Intl

Thu 3/12

17:05-15:40

1 stop17h 35m

Cardiff Wales

Mon 7/12

08:35-15:35

1 stop12h 00m

£825

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 District of Columbia 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 District of Columbia to Cardiff Wales?

Delta and KLM are the most popular carriers operating from District of Columbia to Cardiff Wales

Cheap District of Columbia to Cardiff flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Cardiff

Fastest flight time

15h 20m

Direct flights

None
The fastest flight from District of Columbia to Cardiff takes 15h 20m
There are no direct flights from District of Columbia to Cardiff. There are no popular flight routes from District of Columbia to Cardiff.
Search flight deals

Frequently asked questions about flying from District of Columbia to Cardiff

  • When did momondo last update prices for flights from District of Columbia to Cardiff Wales Airport?

    Prices for flights from District of Columbia to Cardiff Wales Airport are updated daily.

  • How old do you have to be to fly from District of Columbia 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 District of Columbia to Cardiff Wales Airport.

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

    The travel and health documents required for your trip to Cardiff Wales Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Cardiff Wales Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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 District of Columbia to Cardiff?

It is quick and easy to find District of Columbia to Cardiff flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Cardiff that suits you.

Can I find flights from District of Columbia to Cardiff with flexible booking policies on momondo?

momondo does allow users to show only those flights to Cardiff from District of Columbia which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from District of Columbia to Cardiff?

momondo provides multiple filters to help you find the best flight to Cardiff from District of Columbia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from District of Columbia to Cardiff right now. Can momondo alert me if prices change?

If you are not ready to book a flight from District of Columbia to Cardiff now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Cardiff and let you know when they change.

An easier way to manage your Cardiff trip

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Find better results for your trip to the United Kingdom

Airports servicing Wales

Holyhead Anglesey Airport