Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Washington, D.C. Reagan-National Airport to Cardiff from $513

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 9/12. 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
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
11:30 pm - 7:58 pm
CWL
-
DCA
25h 28m
3 stops
$762Multiple Airlines
mié., jun. 3 - mié., jun. 10
Multiple Airlines Logo
6:00 am - 10:15 am
DCA
-
CWL
23h 15m
2 stops
Multiple Airlines Logo
10:10 pm - 10:28 pm
CWL
-
DCA
29h 18m
3 stops
$796Multiple Airlines
mié., jun. 10 - lun., jun. 15
Multiple Airlines Logo
6:00 am - 10:15 am
DCA
-
CWL
23h 15m
2 stops
Multiple Airlines Logo
10:10 pm - 10:28 pm
CWL
-
DCA
29h 18m
2 stops
$849Multiple Airlines
mié., jun. 10 - lun., jun. 15
Multiple Airlines Logo
6:00 am - 10:15 am
DCA
-
CWL
23h 15m
2 stops
Multiple Airlines Logo
11:30 pm - 6:13 pm
CWL
-
DCA
23h 43m
2 stops
$869Multiple Airlines
mié., jun. 3 - mié., jun. 10
Multiple Airlines Logo
12:45 pm - 10:25 pm
DCA
-
CWL
28h 40m
3 stops
Multiple Airlines Logo
10:10 pm - 10:28 pm
CWL
-
DCA
29h 18m
3 stops
$938Multiple Airlines
mié., jun. 10 - lun., jun. 15
Multiple Airlines Logo
11:00 am - 10:15 am
DCA
-
CWL
18h 15m
1 stop
Multiple Airlines Logo
10:10 pm - 10:28 pm
CWL
-
DCA
29h 18m
2 stops
$989Multiple Airlines
mié., jun. 10 - lun., jun. 15
Multiple Airlines Logo
11:00 am - 10:15 am
DCA
-
CWL
18h 15m
1 stop
Multiple Airlines Logo
11:30 pm - 7:58 pm
CWL
-
DCA
25h 28m
2 stops
$997Multiple Airlines
mié., jun. 3 - mié., jun. 10
Multiple Airlines Logo
6:55 pm - 10:15 am
DCA
-
CWL
10h 20m
1 stop
Multiple Airlines Logo
11:35 am - 10:28 pm
CWL
-
DCA
15h 53m
1 stop
$1,012Multiple Airlines
mié., jun. 10 - lun., jun. 15
Multiple Airlines Logo
8:40 pm - 10:15 am
DCA
-
CWL
32h 35m
1 stop
Multiple Airlines Logo
11:35 am - 10:28 pm
CWL
-
DCA
15h 53m
1 stop
$1,017Multiple Airlines
jue., jun. 4 - jue., jun. 11
Multiple Airlines Logo
12:45 pm - 10:15 am
DCA
-
CWL
40h 30m
3 stops
Multiple Airlines Logo
10:50 pm - 6:13 pm
CWL
-
DCA
24h 23m
2 stops
$1,041Multiple Airlines
jue., jun. 4 - jue., jun. 11

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
Sep 24
DCA10:35 amWashington, D.C. Reagan-National
17h 40m
2 stops
CWL9:15 amCardiff Wales
Sep 27
CWL9:50 amCardiff Wales
18h 22m
2 stops
DCA11:12 pmWashington, D.C. Reagan-National
$1,230
Delta
Aug 15
DCA6:15 pmWashington, D.C. Reagan-National
17h 30m
2 stops
CWL4:45 pmCardiff Wales
Aug 30
CWL9:50 amCardiff Wales
18h 22m
2 stops
DCA11:12 pmWashington, D.C. Reagan-National
$1,237
Delta
Apr 24
DCA6:59 pmWashington, D.C. Reagan-National
17h 06m
2 stops
CWL5:05 pmCardiff Wales
Apr 28
CWL9:45 amCardiff Wales
15h 48m
2 stops
DCA8:33 pmWashington, D.C. Reagan-National
$1,303

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

Our best KLM deals on Washington, D.C. Reagan-National Airport to Cardiff flight tickets
KLM
Jun 23
DCA12:55 pmWashington, D.C. Reagan-National
15h 20m
2 stops
CWL9:15 amCardiff Wales
Jun 27
CWL9:45 amCardiff Wales
17h 13m
2 stops
DCA9:58 pmWashington, D.C. Reagan-National
$1,909
KLM
Aug 19
DCA1:30 pmWashington, D.C. Reagan-National
14h 45m
2 stops
CWL9:15 amCardiff Wales
Aug 23
CWL9:50 amCardiff Wales
15h 29m
2 stops
DCA8:19 pmWashington, D.C. Reagan-National
$2,664
KLM
Sep 12
DCA3:30 pmWashington, D.C. Reagan-National
12h 45m
2 stops
CWL9:15 amCardiff Wales
Sep 25
CWL9:45 amCardiff Wales
17h 05m
2 stops
DCA9:50 pmWashington, D.C. Reagan-National
$4,667

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 abril 23, 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

mié. 6/3

6:00 am-10:15 am

2 stops23h 15m

Cardiff Wales

mié. 6/10

11:30 pm-7:58 pm

3 stops25h 28m

$762

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

mié. 6/10

6:00 am-10:15 am

2 stops23h 15m

Cardiff Wales

lun. 6/15

10:10 pm-10:28 pm

3 stops29h 18m

$796

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

mié. 6/10

6:00 am-10:15 am

2 stops23h 15m

Cardiff Wales

lun. 6/15

10:10 pm-10:28 pm

2 stops29h 18m

$849

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

mié. 6/3

6:00 am-10:15 am

2 stops23h 15m

Cardiff Wales

mié. 6/10

11:30 pm-6:13 pm

2 stops23h 43m

$869

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

mié. 6/10

12:45 pm-10:25 pm

3 stops28h 40m

Cardiff Wales

lun. 6/15

10:10 pm-10:28 pm

3 stops29h 18m

$938

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

mié. 6/10

11:00 am-10:15 am

1 stop18h 15m

Cardiff Wales

lun. 6/15

10:10 pm-10:28 pm

2 stops29h 18m

$989

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

mié. 6/3

11:00 am-10:15 am

1 stop18h 15m

Cardiff Wales

mié. 6/10

11:30 pm-7:58 pm

2 stops25h 28m

$997
Quickest round-trip

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

mié. 6/10

6:55 pm-10:15 am

1 stop10h 20m

Cardiff Wales

lun. 6/15

11:35 am-10:28 pm

1 stop15h 53m

$1,012

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

jue. 6/4

8:40 pm-10:15 am

1 stop32h 35m

Cardiff Wales

jue. 6/11

11:35 am-10:28 pm

1 stop15h 53m

$1,017

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

jue. 6/4

12:45 pm-10:15 am

3 stops40h 30m

Cardiff Wales

jue. 6/11

10:50 pm-6:13 pm

2 stops24h 23m

$1,041

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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?

Delta and KLM are the most popular carriers 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

16h 45m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Cardiff takes 16h 45m
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 16h 45m, 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.

An easier way to manage your Cardiff trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
sáb. 5/23
sáb. 5/30
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom

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