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Cheap flights from District of Columbia to Cardiff from $536

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 8/17. 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 round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:50 pm - 10:15 am
IAD
-
CWL
13h 25m
1 stop
Multiple Airlines Logo
11:15 pm - 3:10 pm
CWL
-
IAD
44h 55m
2 stops
$730Multiple Airlines
Mon, Aug 3 - Wed, Aug 19
Multiple Airlines Logo
5:15 pm - 10:25 pm
IAD
-
CWL
24h 10m
1 stop
Multiple Airlines Logo
11:15 pm - 10:45 am
CWL
-
IAD
40h 30m
2 stops
$765Multiple Airlines
Wed, Aug 12 - Wed, Aug 19
Multiple Airlines Logo
6:00 am - 10:15 am
DCA
-
CWL
23h 15m
2 stops
Multiple Airlines Logo
11:15 pm - 10:18 am
CWL
-
DCA
40h 03m
3 stops
$824Multiple Airlines
Mon, Aug 3 - Wed, Aug 19
Multiple Airlines Logo
6:00 am - 10:15 am
DCA
-
CWL
23h 15m
2 stops
Multiple Airlines Logo
11:15 pm - 10:31 pm
CWL
-
DCA
28h 16m
2 stops
$836Multiple Airlines
Mon, Aug 3 - Wed, Aug 19
Multiple Airlines Logo
12:40 pm - 10:15 am
DCA
-
CWL
16h 35m
2 stops
Multiple Airlines Logo
11:15 pm - 7:57 pm
CWL
-
DCA
25h 42m
2 stops
$839Multiple Airlines
Wed, Aug 12 - Wed, Aug 19
Multiple Airlines Logo
12:40 pm - 10:15 am
DCA
-
CWL
16h 35m
2 stops
Multiple Airlines Logo
11:15 pm - 9:48 pm
CWL
-
DCA
27h 33m
3 stops
$843Multiple Airlines
Wed, Aug 12 - Wed, Aug 19
Multiple Airlines Logo
6:55 pm - 10:15 am
DCA
-
CWL
10h 20m
1 stop
Multiple Airlines Logo
11:15 pm - 6:12 pm
CWL
-
DCA
23h 57m
2 stops
$876Multiple Airlines
Wed, Aug 12 - Wed, Aug 19
Multiple Airlines Logo
8:55 pm - 10:25 pm
IAD
-
CWL
20h 30m
1 stop
Multiple Airlines Logo
11:15 pm - 10:45 am
CWL
-
IAD
40h 30m
2 stops
$879Multiple Airlines
Wed, Aug 5 - Wed, Aug 12
Multiple Airlines Logo
8:30 pm - 10:50 pm
IAD
-
CWL
21h 20m
3 stops
Multiple Airlines Logo
11:15 pm - 8:24 pm
CWL
-
IAD
26h 09m
2 stops
$884Multiple Airlines
Mon, Aug 3 - Wed, Aug 19
Multiple Airlines Logo
9:05 pm - 11:25 pm
IAD
-
CWL
21h 20m
1 stop
Multiple Airlines Logo
5:40 pm - 3:30 pm
CWL
-
IAD
26h 50m
2 stops
$892Multiple Airlines
Tue, Sep 15 - Sun, Sep 27

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WestJet flights from District of Columbia to Cardiff

Our best WestJet deals on District of Columbia to Cardiff flight tickets
WestJet
Jul 1
DCA6:59 pmWashington, D.C. Reagan-National
58h 16m
2 stops
CWL10:15 amCardiff Wales
Jul 13
CWL11:35 amCardiff Wales
16h 24m
2 stops
DCA10:59 pmWashington, D.C. Reagan-National
$1,625
WestJet
Jul 1
DCA6:59 pmWashington, D.C. Reagan-National
58h 16m
2 stops
CWL10:15 amCardiff Wales
Jul 13
CWL11:35 amCardiff Wales
16h 24m
2 stops
DCA10:59 pmWashington, D.C. Reagan-National
$1,661

Delta flights from District of Columbia to Cardiff

Our best Delta deals on District of Columbia to Cardiff flight tickets
Delta
Aug 31
DCA11:50 amWashington, D.C. Reagan-National
16h 25m
2 stops
CWL9:15 amCardiff Wales
Sep 9
CWL9:45 amCardiff Wales
16h 36m
2 stops
DCA9:21 pmWashington, D.C. Reagan-National
$1,177
Delta
Aug 31
DCA1:45 pmWashington, D.C. Reagan-National
14h 30m
2 stops
CWL9:15 amCardiff Wales
Sep 9
CWL9:45 amCardiff Wales
17h 18m
2 stops
DCA10:03 pmWashington, D.C. Reagan-National
$1,179
Delta
Aug 20
DCA1:30 pmWashington, D.C. Reagan-National
14h 45m
2 stops
CWL9:15 amCardiff Wales
Sep 4
CWL9:45 amCardiff Wales
15h 48m
2 stops
DCA8:33 pmWashington, D.C. Reagan-National
$1,194

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 June 16, 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 round-trip

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Mon 8/3

3:50 pm-10:15 am

1 stop13h 25m

Cardiff Wales

Wed 8/19

11:15 pm-3:10 pm

2 stops44h 55m

$730

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 8/12

5:15 pm-10:25 pm

1 stop24h 10m

Cardiff Wales

Wed 8/19

11:15 pm-10:45 am

2 stops40h 30m

$765

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Mon 8/3

6:00 am-10:15 am

2 stops23h 15m

Cardiff Wales

Wed 8/19

11:15 pm-10:18 am

3 stops40h 03m

$824

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Mon 8/3

6:00 am-10:15 am

2 stops23h 15m

Cardiff Wales

Wed 8/19

11:15 pm-10:31 pm

2 stops28h 16m

$836

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 8/12

12:40 pm-10:15 am

2 stops16h 35m

Cardiff Wales

Wed 8/19

11:15 pm-7:57 pm

2 stops25h 42m

$839

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 8/12

12:40 pm-10:15 am

2 stops16h 35m

Cardiff Wales

Wed 8/19

11:15 pm-9:48 pm

3 stops27h 33m

$843
Quickest round-trip

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 8/12

6:55 pm-10:15 am

1 stop10h 20m

Cardiff Wales

Wed 8/19

11:15 pm-6:12 pm

2 stops23h 57m

$876

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 8/5

8:55 pm-10:25 pm

1 stop20h 30m

Cardiff Wales

Wed 8/12

11:15 pm-10:45 am

2 stops40h 30m

$879

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Mon 8/3

8:30 pm-10:50 pm

3 stops21h 20m

Cardiff Wales

Wed 8/19

11:15 pm-8:24 pm

2 stops26h 09m

$884

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Tue 9/15

9:05 pm-11:25 pm

1 stop21h 20m

Cardiff Wales

Sun 9/27

5:40 pm-3:30 pm

2 stops26h 50m

$892

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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

10h 05m

Direct flights

None
The fastest flight from District of Columbia to Cardiff takes 10h 05m
There are no direct flights from District of Columbia to Cardiff. There are no popular flight routes from District of Columbia to Cardiff.
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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 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