Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Washington, D.C. to Cardiff from $308

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Washington, D.C. to Cardiff

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:15 pm - 8:10 amIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
9h 55m1 stop Dublin
Multiple Airlines Logo
9:05 am - 4:20 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
36h 15m2 stops Alicante Madrid Barajas
$745Multiple Airlines
Sun, Nov 29 - Sun, Dec 6
Multiple Airlines Logo
5:15 pm - 8:10 amIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
9h 55m1 stop Dublin
Multiple Airlines Logo
2:25 pm - 3:45 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
30h 20m1 stop Dublin
$830Multiple Airlines
Sun, Nov 29 - Sun, Dec 6
Multiple Airlines Logo
7:40 pm - 7:50 amIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
31h 10m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
1:25 pm - 3:45 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
31h 20m1 stop Dublin
$883Multiple Airlines
Thu, Dec 3 - Thu, Dec 10
Multiple Airlines Logo
5:15 pm - 8:10 amIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
9h 55m1 stop Dublin
Multiple Airlines Logo
7:10 pm - 7:20 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
29h 10m3 stops Belfast City Edinburgh Turnhouse Dublin
$951Multiple Airlines
Sun, Nov 29 - Sun, Dec 6
Multiple Airlines Logo
5:15 pm - 1:00 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
14h 45m1 stop Dublin
Multiple Airlines Logo
2:25 pm - 3:45 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
30h 20m1 stop Dublin
$967Multiple Airlines
Wed, Jan 27 - Sun, Jan 31
Multiple Airlines Logo
8:50 pm - 7:50 amIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
30h 00m1 stop Dublin
Multiple Airlines Logo
1:25 pm - 3:45 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
31h 20m1 stop Dublin
$1,015Multiple Airlines
Thu, Dec 3 - Thu, Dec 10
Multiple Airlines Logo
5:15 pm - 1:00 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
14h 45m1 stop Dublin
Multiple Airlines Logo
7:00 am - 4:30 amCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
26h 30m3 stops Malaga Madrid Barajas Bogotá El Dorado
$1,040Multiple Airlines
Wed, Jan 27 - Sun, Jan 31
Multiple Airlines Logo
5:15 pm - 1:00 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
14h 45m1 stop Dublin
Multiple Airlines Logo
7:00 am - 7:05 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
17h 05m2 stops Malaga Casablanca Mohamed V
$1,041Multiple Airlines
Wed, Jan 27 - Sun, Jan 31
Multiple Airlines Logo
7:40 pm - 9:45 amBWI  Baltimore/Washington-CWL Cardiff Wales
33h 05m3 stops Reykjavik Keflavik Intl Paris Charles de Gaulle Amsterdam Schiphol
Multiple Airlines Logo
5:30 pm - 6:40 pmCWL  Cardiff Wales-BWI Baltimore/Washington
30h 10m3 stops Amsterdam Schiphol Paris Charles de Gaulle Reykjavik Keflavik Intl
$1,077Multiple Airlines
Tue, Dec 1 - Tue, Dec 8
Multiple Airlines Logo
5:15 pm - 7:55 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
21h 40m2 stops Dublin Granadilla Tenerife-Sur
Multiple Airlines Logo
7:10 pm - 7:20 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
29h 10m3 stops Belfast City Edinburgh Turnhouse Dublin
$1,082Multiple Airlines
Sun, Nov 29 - Sun, Dec 6

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

KLM flights from Washington, D.C. to Cardiff

Our best KLM deals on Washington, D.C. to Cardiff flight tickets
KLM
Jan 27
BWI3:30 pmBaltimore/Washington
13h 20m
2 stops
CWL9:50 amCardiff Wales
Jan 31
CWL5:30 pmCardiff Wales
31h 11m
2 stops
BWI7:41 pmBaltimore/Washington
$1,185
KLM
Dec 1
IAD5:45 pmWashington, D.C. Dulles Intl
18h 15m
1 stop
CWL5:00 pmCardiff Wales
Dec 8
CWL5:30 pmCardiff Wales
27h 25m
1 stop
IAD3:55 pmWashington, D.C. Dulles Intl
$1,196
KLM
Dec 1
IAD12:35 pmWashington, D.C. Dulles Intl
16h 15m
2 stops
CWL9:50 amCardiff Wales
Dec 8
CWL5:30 pmCardiff Wales
27h 25m
1 stop
IAD3:55 pmWashington, D.C. Dulles Intl
$1,201

Delta flights from Washington, D.C. to Cardiff

Our best Delta deals on Washington, D.C. to Cardiff flight tickets
Delta
Dec 1
BWI12:18 pmBaltimore/Washington
16h 32m
2 stops
CWL9:50 amCardiff Wales
Dec 8
CWL10:20 amCardiff Wales
18h 15m
2 stops
BWI11:35 pmBaltimore/Washington
$1,210
Delta
Dec 3
BWI12:18 pmBaltimore/Washington
16h 32m
2 stops
CWL9:50 amCardiff Wales
Dec 10
CWL10:20 amCardiff Wales
18h 15m
2 stops
BWI11:35 pmBaltimore/Washington
$1,260
Delta
Dec 10
IAD6:15 pmWashington, D.C. Dulles Intl
10h 35m
1 stop
CWL9:50 amCardiff Wales
Dec 12
CWL10:20 amCardiff Wales
19h 21m
2 stops
IAD12:41 amWashington, D.C. Dulles Intl
$1,724

momondo Fare Finder

 
Use the filters below to find and compare flights from Washington, D.C. to Cardiff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Cardiff

IAD Washington, D.C. Dulles Intl - CWL Cardiff Wales

IADCWL

Washington, D.C. Dulles Intl

Sun 11/29

5:15 pm-8:10 am

1 stop9h 55m

Cardiff Wales

Sun 12/6

9:05 am-4:20 pm

2 stops36h 15m

$745

Washington, D.C.Cardiff

IAD Washington, D.C. Dulles Intl - CWL Cardiff Wales

IADCWL

Washington, D.C. Dulles Intl

Sun 11/29

5:15 pm-8:10 am

1 stop9h 55m

Cardiff Wales

Sun 12/6

2:25 pm-3:45 pm

1 stop30h 20m

$830

Washington, D.C.Cardiff

IAD Washington, D.C. Dulles Intl - CWL Cardiff Wales

IADCWL

Washington, D.C. Dulles Intl

Thu 12/3

7:40 pm-7:50 am

2 stops31h 10m

Cardiff Wales

Thu 12/10

1:25 pm-3:45 pm

1 stop31h 20m

$883

Washington, D.C.Cardiff

IAD Washington, D.C. Dulles Intl - CWL Cardiff Wales

IADCWL

Washington, D.C. Dulles Intl

Sun 11/29

5:15 pm-8:10 am

1 stop9h 55m

Cardiff Wales

Sun 12/6

7:10 pm-7:20 pm

3 stops29h 10m

$951

Washington, D.C.Cardiff

IAD Washington, D.C. Dulles Intl - CWL Cardiff Wales

IADCWL

Washington, D.C. Dulles Intl

Wed 1/27

5:15 pm-1:00 pm

1 stop14h 45m

Cardiff Wales

Sun 1/31

2:25 pm-3:45 pm

1 stop30h 20m

$967

Washington, D.C.Cardiff

IAD Washington, D.C. Dulles Intl - CWL Cardiff Wales

IADCWL

Washington, D.C. Dulles Intl

Thu 12/3

8:50 pm-7:50 am

1 stop30h 00m

Cardiff Wales

Thu 12/10

1:25 pm-3:45 pm

1 stop31h 20m

$1,015

Washington, D.C.Cardiff

IAD Washington, D.C. Dulles Intl - CWL Cardiff Wales

IADCWL

Washington, D.C. Dulles Intl

Wed 1/27

5:15 pm-1:00 pm

1 stop14h 45m

Cardiff Wales

Sun 1/31

7:00 am-4:30 am

3 stops26h 30m

$1,040
Quickest round-trip

Washington, D.C.Cardiff

IAD Washington, D.C. Dulles Intl - CWL Cardiff Wales

IADCWL

Washington, D.C. Dulles Intl

Wed 1/27

5:15 pm-1:00 pm

1 stop14h 45m

Cardiff Wales

Sun 1/31

7:00 am-7:05 pm

2 stops17h 05m

$1,041

BaltimoreCardiff

BWI Baltimore/Washington - CWL Cardiff Wales

BWICWL

Baltimore/Washington

Tue 12/1

7:40 pm-9:45 am

3 stops33h 05m

Cardiff Wales

Tue 12/8

5:30 pm-6:40 pm

3 stops30h 10m

$1,077

Washington, D.C.Cardiff

IAD Washington, D.C. Dulles Intl - CWL Cardiff Wales

IADCWL

Washington, D.C. Dulles Intl

Sun 11/29

5:15 pm-7:55 pm

2 stops21h 40m

Cardiff Wales

Sun 12/6

7:10 pm-7:20 pm

3 stops29h 10m

$1,082

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

See travel insights to Cardiff from

How to get the cheapest flight ticket from Washington, D.C. 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

Can stopping save me money on Washington, D.C. to Cardiff flights?

You could potentially save up to 22% on your flight if you consider stops on a Washington, D.C. to Cardiff flight.

When to book flights from Washington, D.C. to Cardiff

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. 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. to Cardiff (WAS to CWL) flight deals and tips

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

Best Price Found

$308

Fastest flight time

10h 45m

Direct flights

None
The best one-way flight to Cardiff from Washington, D.C. in the past 72 hours is $308. The best round-trip flight deal from Washington, D.C. to Cardiff found on momondo in the last 72 hours is $745.
The fastest flight from Washington, D.C. to Cardiff takes 10h 45m
There are no direct flights from Washington, D.C. to Cardiff. There are no popular flight routes from Washington, D.C. to Cardiff.
Search flight deals

Frequently asked questions about flying from Washington, D.C. to Cardiff

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

    Cardiff Wales is 3537.5 mi away from Washington, D.C.. 10h 45m is a normal flight duration for this route.

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

    Prices for flights from Washington, D.C. to Cardiff Wales Airport refresh daily.

  • How old do you have to be to fly from Washington, D.C. to Cardiff Wales Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Cardiff Wales Airport.

  • What documentation or ID do you need to fly to Cardiff Wales Airport?

    The necessary travel and health documents for your Cardiff Wales Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Cardiff?

Book flights to Cardiff if you plan to visit one of these locations
Bridgend

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Cardiff?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Cardiff for you.

Can I find flights from Washington, D.C. to Cardiff with flexible booking policies on momondo?

Yes. All flights to Cardiff from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Cardiff from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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
Wed 11/18
Wed 11/25
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom

Fly your favorite airline to Cardiff

Aer Lingus