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Cheap flights from District of Columbia to Cardiff from $321

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 7/15. 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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Find the cheapest flights from District of Columbia to Cardiff

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:30 pm - 10:50 pm
IAD
-
CWL
21h 20m
3 stops
Multiple Airlines Logo
10:50 pm - 3:10 pm
CWL
-
IAD
21h 20m
2 stops
$802Multiple Airlines
Mon, Apr 13 - Thu, Apr 16
Virgin Atlantic Logo
6:10 pm - 4:45 pm
IAD
-
CWL
17h 35m
1 stop
Virgin Atlantic Logo
9:45 am - 3:35 pm
CWL
-
IAD
10h 50m
1 stop
$821Virgin Atlantic
Mon, Apr 13 - Mon, Apr 20
Delta Logo
6:10 pm - 9:15 am
IAD
-
CWL
10h 05m
1 stop
Delta Logo
9:45 am - 11:03 pm
CWL
-
IAD
18h 18m
2 stops
$831Delta
Mon, Apr 13 - Mon, Apr 20
KLM Logo
7:56 pm - 4:45 pm
DCA
-
CWL
15h 49m
2 stops
KLM Logo
5:15 pm - 4:36 pm
CWL
-
DCA
28h 21m
2 stops
$835KLM
Tue, Apr 14 - Tue, Apr 21
Delta Logo
11:48 am - 9:15 am
DCA
-
CWL
16h 27m
2 stops
Delta Logo
9:45 am - 10:41 pm
CWL
-
DCA
17h 56m
2 stops
$836Delta
Mon, Apr 13 - Mon, Apr 20
Scandinavian Airlines Logo
5:05 pm - 4:55 pm
DCA
-
CWL
19h 50m
2 stops
Scandinavian Airlines Logo
9:50 am - 10:36 pm
CWL
-
DCA
41h 46m
2 stops
$850Scandinavian Airlines
Wed, Mar 25 - Sun, Mar 29
Multiple Airlines Logo
5:15 pm - 11:25 pm
IAD
-
CWL
25h 10m
1 stop
Multiple Airlines Logo
9:45 pm - 7:00 pm
CWL
-
IAD
26h 15m
2 stops
$879Multiple Airlines
Tue, Apr 14 - Tue, Apr 21
Multiple Airlines Logo
5:15 pm - 10:00 pm
IAD
-
CWL
23h 45m
1 stop
Multiple Airlines Logo
5:40 pm - 7:25 pm
CWL
-
IAD
30h 45m
2 stops
$892Multiple Airlines
Sun, Apr 12 - Sun, Apr 19
KLM Logo
5:40 pm - 9:15 am
IAD
-
CWL
10h 35m
1 stop
KLM Logo
5:15 pm - 3:35 pm
CWL
-
IAD
27h 20m
1 stop
$980KLM
Sun, Apr 12 - Sun, Apr 19
Scandinavian Airlines Logo
12:16 pm - 9:50 am
DCA
-
CWL
17h 34m
2 stops
Scandinavian Airlines Logo
9:45 am - 11:44 pm
CWL
-
DCA
18h 59m
2 stops
$1,240Scandinavian Airlines
Thu, Mar 26 - Fri, Apr 3

KLM flights from District of Columbia to Cardiff

Our best KLM deals on District of Columbia to Cardiff flight tickets
KLM
Apr 12
IAD5:40 pmWashington, D.C. Dulles Intl
10h 35m
1 stop
CWL9:15 amCardiff Wales
Apr 19
CWL5:15 pmCardiff Wales
27h 20m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$980
KLM
Jul 8
IAD6:10 pmWashington, D.C. Dulles Intl
17h 35m
1 stop
CWL4:45 pmCardiff Wales
Jul 20
CWL5:15 pmCardiff Wales
27h 20m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$1,063
KLM
Apr 11
IAD5:40 pmWashington, D.C. Dulles Intl
10h 35m
1 stop
CWL9:15 amCardiff Wales
Apr 18
CWL5:35 pmCardiff Wales
27h 00m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$1,066

Virgin Atlantic flights from District of Columbia to Cardiff

Our best Virgin Atlantic deals on District of Columbia to Cardiff flight tickets
Virgin Atlantic
Apr 13
IAD6:10 pmWashington, D.C. Dulles Intl
17h 35m
1 stop
CWL4:45 pmCardiff Wales
Apr 20
CWL9:45 amCardiff Wales
10h 50m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$821
Virgin Atlantic
Apr 10
IAD5:40 pmWashington, D.C. Dulles Intl
10h 35m
1 stop
CWL9:15 amCardiff Wales
Apr 17
CWL9:45 amCardiff Wales
10h 50m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$979
Virgin Atlantic
Apr 10
IAD5:40 pmWashington, D.C. Dulles Intl
10h 35m
1 stop
CWL9:15 amCardiff Wales
Apr 17
CWL9:45 amCardiff Wales
18h 47m
2 stops
IAD11:32 pmWashington, D.C. Dulles Intl
$1,079

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated March 1, 2026.
Use the filters below to find and compare flights from District of Columbia to Cardiff that are best for you.

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Route

Depart

Return

Price

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Mon 4/13

8:30 pm-10:50 pm

3 stops21h 20m

Cardiff Wales

Thu 4/16

10:50 pm-3:10 pm

2 stops21h 20m

$802

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Mon 4/13

6:10 pm-4:45 pm

1 stop17h 35m

Cardiff Wales

Mon 4/20

9:45 am-3:35 pm

1 stop10h 50m

$821

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Mon 4/13

6:10 pm-9:15 am

1 stop10h 05m

Cardiff Wales

Mon 4/20

9:45 am-11:03 pm

2 stops18h 18m

$831

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Tue 4/14

7:56 pm-4:45 pm

2 stops15h 49m

Cardiff Wales

Tue 4/21

5:15 pm-4:36 pm

2 stops28h 21m

$835

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Mon 4/13

11:48 am-9:15 am

2 stops16h 27m

Cardiff Wales

Mon 4/20

9:45 am-10:41 pm

2 stops17h 56m

$836

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 3/25

5:05 pm-4:55 pm

2 stops19h 50m

Cardiff Wales

Sun 3/29

9:50 am-10:36 pm

2 stops41h 46m

$850

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Tue 4/14

5:15 pm-11:25 pm

1 stop25h 10m

Cardiff Wales

Tue 4/21

9:45 pm-7:00 pm

2 stops26h 15m

$879

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Sun 4/12

5:15 pm-10:00 pm

1 stop23h 45m

Cardiff Wales

Sun 4/19

5:40 pm-7:25 pm

2 stops30h 45m

$892

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Sun 4/12

5:40 pm-9:15 am

1 stop10h 35m

Cardiff Wales

Sun 4/19

5:15 pm-3:35 pm

1 stop27h 20m

$980

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Thu 3/26

12:16 pm-9:50 am

2 stops17h 34m

Cardiff Wales

Fri 4/3

9:45 am-11:44 pm

2 stops18h 59m

$1,240

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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?

KLM and Delta 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

16h 05m

Direct flights

None
The fastest flight from District of Columbia to Cardiff takes 16h 05m
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

  • 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 were last updated today.

  • 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 you'll need for your trip to Cardiff Wales Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Cardiff Wales Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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 offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from District of Columbia to Cardiff.

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 simply researching potential flights to Cardiff, momondo offers a useful price alert feature which will track prices for flights to Cardiff from District of Columbia and alert you when they change.

An easier way to manage your Cardiff trip

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Aer Lingus