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Cheap flights from Washington, D.C. Reagan-National Airport to Cardiff from $340

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. Reagan-National Airport to Cardiff departing on 9/2. 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 Washington, D.C. Reagan-National Airport to Cardiff

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:00 am - 10:15 am
DCA
-
CWL
23h 15m
2 stops
Multiple Airlines Logo
9:45 pm - 10:18 am
CWL
-
DCA
41h 33m
3 stops
$997Multiple Airlines
Fri, Aug 14 - Sun, Aug 23
Multiple Airlines Logo
12:40 pm - 10:15 am
DCA
-
CWL
16h 35m
2 stops
Multiple Airlines Logo
9:45 pm - 10:31 pm
CWL
-
DCA
29h 46m
2 stops
$1,021Multiple Airlines
Fri, Aug 14 - Sun, Aug 23
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
3 stops
$1,046Multiple Airlines
Wed, Jul 15 - Wed, Jul 22
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
3 stops
$1,091Multiple Airlines
Wed, Jul 15 - Wed, Jul 22
Multiple Airlines Logo
11:00 am - 10:15 am
DCA
-
CWL
18h 15m
1 stop
Multiple Airlines Logo
9:45 pm - 10:31 pm
CWL
-
DCA
29h 46m
2 stops
$1,092Multiple Airlines
Fri, Aug 14 - Sun, Aug 23
Multiple Airlines Logo
6:00 am - 10:15 am
DCA
-
CWL
23h 15m
3 stops
Multiple Airlines Logo
11:15 pm - 10:31 pm
CWL
-
DCA
28h 16m
3 stops
$1,093Multiple Airlines
Wed, Jul 15 - Wed, Jul 22
Multiple Airlines Logo
6:55 pm - 10:15 am
DCA
-
CWL
10h 20m
1 stop
Multiple Airlines Logo
11:15 pm - 10:31 pm
CWL
-
DCA
28h 16m
3 stops
$1,114Multiple Airlines
Wed, Jul 15 - Wed, Jul 22
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
3 stops
$1,129Multiple Airlines
Wed, Jul 15 - Wed, Jul 22
KLM Logo
11:50 am - 9:15 am
DCA
-
CWL
16h 25m
2 stops
KLM Logo
9:45 am - 10:59 pm
CWL
-
DCA
18h 14m
2 stops
$1,142KLM
Tue, Sep 1 - Wed, Sep 30
Multiple Airlines Logo
8:40 pm - 10:25 pm
DCA
-
CWL
20h 45m
2 stops
Multiple Airlines Logo
11:00 am - 8:00 pm
CWL
-
DCA
38h 00m
3 stops
$1,147Multiple Airlines
Wed, Sep 23 - Tue, Sep 29

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Delta flights from Washington, D.C. Reagan-National Airport to Cardiff

Our best Delta deals on Washington, D.C. Reagan-National Airport to Cardiff flight tickets
Delta
Aug 31
DCA12:00 pmWashington, D.C. Reagan-National
16h 15m
2 stops
CWL9:15 amCardiff Wales
Sep 9
CWL9:45 amCardiff Wales
17h 05m
2 stops
DCA9:50 pmWashington, D.C. Reagan-National
$1,177
Delta
Aug 31
DCA12:55 pmWashington, D.C. Reagan-National
15h 20m
2 stops
CWL9:15 amCardiff Wales
Sep 9
CWL9:45 amCardiff Wales
18h 06m
2 stops
DCA10:51 pmWashington, D.C. Reagan-National
$1,178
Delta
Aug 2
DCA6:30 pmWashington, D.C. Reagan-National
17h 15m
2 stops
CWL4:45 pmCardiff Wales
Aug 11
CWL9:45 amCardiff Wales
15h 48m
2 stops
DCA8:33 pmWashington, D.C. Reagan-National
$1,212

WestJet flights from Washington, D.C. Reagan-National Airport to Cardiff

Our best WestJet deals on Washington, D.C. Reagan-National Airport to Cardiff flight tickets
WestJet
Jul 2
DCA1:30 pmWashington, D.C. Reagan-National
39h 45m
2 stops
CWL10:15 amCardiff Wales
Jul 9
CWL11:35 amCardiff Wales
16h 24m
2 stops
DCA10:59 pmWashington, D.C. Reagan-National
$1,546
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
Aug 24
DCA6:59 pmWashington, D.C. Reagan-National
58h 16m
2 stops
CWL10:15 amCardiff Wales
Sep 7
CWL11:35 amCardiff Wales
16h 24m
2 stops
DCA10:59 pmWashington, D.C. Reagan-National
$3,416

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National 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 832,500 searches. Data last updated June 12, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Cardiff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Fri 8/14

6:00 am-10:15 am

2 stops23h 15m

Cardiff Wales

Sun 8/23

9:45 pm-10:18 am

3 stops41h 33m

$997

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Fri 8/14

12:40 pm-10:15 am

2 stops16h 35m

Cardiff Wales

Sun 8/23

9:45 pm-10:31 pm

2 stops29h 46m

$1,021

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 7/15

6:00 am-10:15 am

2 stops23h 15m

Cardiff Wales

Wed 7/22

11:15 pm-10:31 pm

3 stops28h 16m

$1,046

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 7/15

6:00 am-10:15 am

2 stops23h 15m

Cardiff Wales

Wed 7/22

11:15 pm-10:31 pm

3 stops28h 16m

$1,091

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Fri 8/14

11:00 am-10:15 am

1 stop18h 15m

Cardiff Wales

Sun 8/23

9:45 pm-10:31 pm

2 stops29h 46m

$1,092

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 7/15

6:00 am-10:15 am

3 stops23h 15m

Cardiff Wales

Wed 7/22

11:15 pm-10:31 pm

3 stops28h 16m

$1,093

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 7/15

6:55 pm-10:15 am

1 stop10h 20m

Cardiff Wales

Wed 7/22

11:15 pm-10:31 pm

3 stops28h 16m

$1,114

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 7/15

6:00 am-10:15 am

2 stops23h 15m

Cardiff Wales

Wed 7/22

11:15 pm-10:31 pm

3 stops28h 16m

$1,129
Quickest round-trip

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Tue 9/1

11:50 am-9:15 am

2 stops16h 25m

Cardiff Wales

Wed 9/30

9:45 am-10:59 pm

2 stops18h 14m

$1,142

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 9/23

8:40 pm-10:25 pm

2 stops20h 45m

Cardiff Wales

Tue 9/29

11:00 am-8:00 pm

3 stops38h 00m

$1,147

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 Washington, D.C. Reagan-National 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. Reagan-National to Cardiff Wales?

KLM is the most popular carrier operating from Washington, D.C. Reagan-National to Cardiff Wales

When to book flights from Washington, D.C. Reagan-National Airport to Cardiff

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

Cheap Washington, D.C. Reagan-National Airport to Cardiff (DCA to CWL) flight deals and tips

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

Fastest flight time

15h 20m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Cardiff takes 15h 20m
There are no direct flights from Washington, D.C. Reagan-National Airport to Cardiff. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Cardiff.
Search flight deals

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to Cardiff

  • How far is Washington, D.C. Reagan-National to Cardiff Wales by plane?

    Cardiff Wales is 3539.9 mi away from Washington, D.C. Reagan-National. Flights usually cover this in 15h 20m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Washington, D.C. Reagan-National Airport to Cardiff Wales Airport were last updated today.

  • How old do you have to be to fly from Washington, D.C. Reagan-National 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. Reagan-National Airport 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 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?

Yes. momondo allows you to filter the results for Washington, D.C. to Cardiff flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Washington, D.C. and Cardiff by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Washington, D.C. to Cardiff right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington, D.C. to Cardiff flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cabin classes currently available on flights to Cardiff

List of cabin classes available on flights landing in Cardiff. Availability may vary depending on flight origin and airline.
First Class to Cardiff
Business Class to Cardiff