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Cheap flights from District of Columbia to Cardiff from $610

This is the cheapest round-trip 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 2/25. 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
5:05 pm - 10:05 am
IAD
-
CWL
12h 00m
1 stop
Multiple Airlines Logo
5:25 pm - 7:30 pm
CWL
-
IAD
31h 05m
2 stops
$610Multiple Airlines
Wed, Feb 25 - Wed, Mar 4
KLM Logo
12:40 pm - 9:50 am
IAD
-
CWL
16h 10m
2 stops
KLM Logo
5:25 pm - 4:05 pm
CWL
-
IAD
27h 40m
1 stop
$755KLM
Wed, Feb 11 - Wed, Feb 18
KLM Logo
1:40 pm - 9:50 am
DCA
-
CWL
15h 10m
2 stops
KLM Logo
10:20 am - 10:57 pm
CWL
-
DCA
17h 37m
2 stops
$761KLM
Wed, Feb 11 - Wed, Feb 18
KLM Logo
12:23 pm - 9:50 am
IAD
-
CWL
16h 27m
2 stops
KLM Logo
10:20 am - 12:21 am
CWL
-
IAD
19h 01m
2 stops
$761KLM
Wed, Feb 11 - Wed, Feb 18
KLM Logo
6:05 pm - 9:50 am
IAD
-
CWL
10h 45m
1 stop
KLM Logo
5:25 pm - 4:05 pm
CWL
-
IAD
27h 40m
1 stop
$770KLM
Thu, Feb 26 - Thu, Mar 5
Virgin Atlantic Logo
1:19 pm - 9:50 am
IAD
-
CWL
16h 31m
2 stops
Virgin Atlantic Logo
5:25 pm - 5:05 pm
CWL
-
IAD
27h 40m
1 stop
$775Virgin Atlantic
Thu, Mar 19 - Tue, Mar 24
Virgin Atlantic Logo
6:05 pm - 9:50 am
IAD
-
CWL
10h 45m
1 stop
Virgin Atlantic Logo
10:20 am - 12:21 am
CWL
-
IAD
19h 01m
2 stops
$780Virgin Atlantic
Thu, Feb 26 - Thu, Mar 5
Delta Logo
11:06 am - 9:50 am
DCA
-
CWL
17h 44m
2 stops
Delta Logo
10:20 am - 11:43 pm
CWL
-
DCA
18h 23m
2 stops
$784Delta
Fri, Feb 27 - Fri, Mar 6
Delta Logo
12:24 pm - 9:50 am
IAD
-
CWL
16h 26m
2 stops
Delta Logo
10:20 am - 11:09 pm
CWL
-
IAD
17h 49m
2 stops
$785Delta
Thu, Feb 26 - Thu, Mar 5
Multiple Airlines Logo
7:40 pm - 9:50 am
IAD
-
CWL
33h 10m
3 stops
Multiple Airlines Logo
5:25 pm - 6:30 pm
CWL
-
IAD
30h 05m
3 stops
$797Multiple Airlines
Wed, Feb 25 - Wed, Mar 4

KLM flights from District of Columbia to Cardiff

Our best KLM deals on District of Columbia to Cardiff flight tickets
KLM
Feb 11
IAD12:40 pmWashington, D.C. Dulles Intl
16h 10m
2 stops
CWL9:50 amCardiff Wales
Feb 18
CWL5:25 pmCardiff Wales
27h 40m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$755
KLM
Feb 11
DCA1:40 pmWashington, D.C. Reagan-National
15h 10m
2 stops
CWL9:50 amCardiff Wales
Feb 18
CWL10:20 amCardiff Wales
17h 37m
2 stops
DCA10:57 pmWashington, D.C. Reagan-National
$761
KLM
Feb 26
IAD6:05 pmWashington, D.C. Dulles Intl
10h 45m
1 stop
CWL9:50 amCardiff Wales
Mar 5
CWL5:25 pmCardiff Wales
27h 40m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$770

Delta flights from District of Columbia to Cardiff

Our best Delta deals on District of Columbia to Cardiff flight tickets
Delta
Feb 27
DCA11:06 amWashington, D.C. Reagan-National
17h 44m
2 stops
CWL9:50 amCardiff Wales
Mar 6
CWL10:20 amCardiff Wales
18h 23m
2 stops
DCA11:43 pmWashington, D.C. Reagan-National
$784
Delta
Feb 26
IAD12:24 pmWashington, D.C. Dulles Intl
16h 26m
2 stops
CWL9:50 amCardiff Wales
Mar 5
CWL10:20 amCardiff Wales
17h 49m
2 stops
IAD11:09 pmWashington, D.C. Dulles Intl
$785
Delta
Jan 18
DCA2:35 pmWashington, D.C. Reagan-National
14h 15m
2 stops
CWL9:50 amCardiff Wales
Feb 3
CWL10:20 amCardiff Wales
16h 03m
2 stops
DCA9:23 pmWashington, D.C. Reagan-National
$787

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 January 13, 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

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 2/25

5:05 pm-10:05 am

1 stop12h 00m

Cardiff Wales

Wed 3/4

5:25 pm-7:30 pm

2 stops31h 05m

$610

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 2/11

12:40 pm-9:50 am

2 stops16h 10m

Cardiff Wales

Wed 2/18

5:25 pm-4:05 pm

1 stop27h 40m

$755

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 2/11

1:40 pm-9:50 am

2 stops15h 10m

Cardiff Wales

Wed 2/18

10:20 am-10:57 pm

2 stops17h 37m

$761

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 2/11

12:23 pm-9:50 am

2 stops16h 27m

Cardiff Wales

Wed 2/18

10:20 am-12:21 am

2 stops19h 01m

$761

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 2/26

6:05 pm-9:50 am

1 stop10h 45m

Cardiff Wales

Thu 3/5

5:25 pm-4:05 pm

1 stop27h 40m

$770

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 3/19

1:19 pm-9:50 am

2 stops16h 31m

Cardiff Wales

Tue 3/24

5:25 pm-5:05 pm

1 stop27h 40m

$775

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 2/26

6:05 pm-9:50 am

1 stop10h 45m

Cardiff Wales

Thu 3/5

10:20 am-12:21 am

2 stops19h 01m

$780

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Fri 2/27

11:06 am-9:50 am

2 stops17h 44m

Cardiff Wales

Fri 3/6

10:20 am-11:43 pm

2 stops18h 23m

$784

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 2/26

12:24 pm-9:50 am

2 stops16h 26m

Cardiff Wales

Thu 3/5

10:20 am-11:09 pm

2 stops17h 49m

$785

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 2/25

7:40 pm-9:50 am

3 stops33h 10m

Cardiff Wales

Wed 3/4

5:25 pm-6:30 pm

3 stops30h 05m

$797

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

10h 35m

Direct flights

None
The fastest flight from District of Columbia to Cardiff takes 10h 35m
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.

  • How do I get Price Alerts for flights from District of Columbia to Cardiff?

    Price Alerts will notify you by email when the price for flights to Cardiff from District of Columbia decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from District of Columbia to Cardiff with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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.

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Aer Lingus