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

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

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Cardiff Wales Airport to Washington, D.C..

What documentation or ID do you need to fly to Washington, D.C.?

The travel and health documents required for your trip to Washington, D.C. can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C.. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$1,090 Cheap Flights from Cardiff to Washington, D.C. in 2026

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0 bags

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

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One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:45 pm - 3:45 pm

CWL

IAD

23h 00m

1 stop

8:40 pm - 9:10 am

IAD

CWL

31h 30m

2 stops

$1,090Multiple Airlines

Sun, Apr 19 - Fri, Apr 24

5:40 pm - 7:10 pm

CWL

IAD

30h 30m

2 stops

5:15 pm - 10:00 pm

IAD

CWL

23h 45m

1 stop

$1,201Multiple Airlines

Sun, Mar 29 - Sun, Apr 5

9:45 pm - 3:45 pm

CWL

IAD

23h 00m

1 stop

5:15 pm - 10:00 pm

IAD

CWL

23h 45m

1 stop

$1,276Multiple Airlines

Sun, Mar 29 - Sun, Apr 5

9:50 am - 11:17 pm

CWL

DCA

18h 27m

2 stops

7:35 pm - 9:15 am

DCA

CWL

32h 40m

2 stops

$1,282Delta

Sun, Apr 19 - Fri, Apr 24

5:15 pm - 4:05 pm

CWL

IAD

51h 50m

2 stops

7:29 pm - 9:15 am

IAD

CWL

32h 46m

2 stops

$1,350KLM

Sun, Mar 29 - Sun, Apr 5

9:50 am - 10:36 pm

CWL

DCA

41h 46m

2 stops

6:30 pm - 9:15 am

DCA

CWL

33h 45m

2 stops

$1,425Virgin Atlantic

Sun, Mar 29 - Sun, Apr 5

5:25 pm - 8:40 pm

CWL

DCA

31h 15m

2 stops

2:00 pm - 9:15 am

DCA

CWL

14h 15m

2 stops

$1,556KLM

Sat, Mar 28 - Sat, Apr 4

12:00 pm - 7:40 pm

CWL

BWI

36h 40m

2 stops

9:35 pm - 11:30 am

BWI

CWL

32h 55m

2 stops

$1,852British Airways

Sun, Mar 29 - Sun, Apr 5

12:00 pm - 7:40 pm

CWL

BWI

36h 40m

2 stops

9:30 pm - 11:30 am

BWI

CWL

33h 00m

2 stops

$2,031British Airways

Mon, Apr 20 - Fri, Apr 24

10:20 am - 11:01 pm

CWL

BWI

16h 41m

2 stops

12:25 pm - 9:15 am

BWI

CWL

15h 50m

2 stops

$4,574Delta

Sat, Mar 28 - Sat, Apr 4

KLM flights from Cardiff to Washington, D.C.

Our best KLM deals on Cardiff to Washington, D.C. flight tickets

KLM

Mar 30

CWL5:15 pmCardiff Wales

27h 20m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

Apr 6

IAD1:19 pmWashington, D.C. Dulles Intl

14h 56m

2 stops

CWL9:15 amCardiff Wales

$1,141

KLM

Mar 30

CWL5:15 pmCardiff Wales

27h 50m

2 stops

IAD4:05 pmWashington, D.C. Dulles Intl

Apr 6

IAD12:14 pmWashington, D.C. Dulles Intl

16h 01m

2 stops

CWL9:15 amCardiff Wales

$1,179

KLM

Mar 29

CWL5:15 pmCardiff Wales

51h 50m

2 stops

IAD4:05 pmWashington, D.C. Dulles Intl

Apr 5

IAD7:29 pmWashington, D.C. Dulles Intl

32h 46m

2 stops

CWL9:15 amCardiff Wales

$1,350

Delta flights from Cardiff to Washington, D.C.

Our best Delta deals on Cardiff to Washington, D.C. flight tickets

Delta

Apr 19

CWL9:50 amCardiff Wales

18h 27m

2 stops

DCA11:17 pmWashington, D.C. Reagan-National

Apr 24

DCA7:35 pmWashington, D.C. Reagan-National

32h 40m

2 stops

CWL9:15 amCardiff Wales

$1,282

Delta

Mar 28

CWL10:20 amCardiff Wales

16h 41m

2 stops

BWI11:01 pmBaltimore/Washington

Apr 4

BWI12:25 pmBaltimore/Washington

15h 50m

2 stops

CWL9:15 amCardiff Wales

$4,574

Delta

Apr 19

CWL9:50 amCardiff Wales

15h 27m

2 stops

BWI8:17 pmBaltimore/Washington

Apr 24

BWI12:27 pmBaltimore/Washington

15h 48m

2 stops

CWL9:15 amCardiff Wales

$5,234

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sun 4/19

9:45 pm-3:45 pm

1 stop23h 00m

Washington, D.C. Dulles Intl

Fri 4/24

8:40 pm-9:10 am

2 stops31h 30m

$1,090

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sun 3/29

5:40 pm-7:10 pm

2 stops30h 30m

Washington, D.C. Dulles Intl

Sun 4/5

5:15 pm-10:00 pm

1 stop23h 45m

$1,201

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sun 3/29

9:45 pm-3:45 pm

1 stop23h 00m

Washington, D.C. Dulles Intl

Sun 4/5

5:15 pm-10:00 pm

1 stop23h 45m

$1,276

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Sun 4/19

9:50 am-11:17 pm

2 stops18h 27m

Washington, D.C. Reagan-National

Fri 4/24

7:35 pm-9:15 am

2 stops32h 40m

$1,282

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sun 3/29

5:15 pm-4:05 pm

2 stops51h 50m

Washington, D.C. Dulles Intl

Sun 4/5

7:29 pm-9:15 am

2 stops32h 46m

$1,350

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Sun 3/29

9:50 am-10:36 pm

2 stops41h 46m

Washington, D.C. Reagan-National

Sun 4/5

6:30 pm-9:15 am

2 stops33h 45m

$1,425

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Sat 3/28

5:25 pm-8:40 pm

2 stops31h 15m

Washington, D.C. Reagan-National

Sat 4/4

2:00 pm-9:15 am

2 stops14h 15m

$1,556

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

Sun 3/29

12:00 pm-7:40 pm

2 stops36h 40m

Baltimore/Washington

Sun 4/5

9:35 pm-11:30 am

2 stops32h 55m

$1,852

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

Mon 4/20

12:00 pm-7:40 pm

2 stops36h 40m

Baltimore/Washington

Fri 4/24

9:30 pm-11:30 am

2 stops33h 00m

$2,031

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

Sat 3/28

10:20 am-11:01 pm

2 stops16h 41m

Baltimore/Washington

Sat 4/4

12:25 pm-9:15 am

2 stops15h 50m

$4,574

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

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 Cardiff to Washington, D.C. flights?

You could potentially save up to 7% on your flight if you consider stops on a Cardiff to Washington, D.C. flight.

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

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

Estimated round-trip price

Cheap Cardiff to Washington, D.C. (CWL to WAS) flight deals and tips

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

Fastest flight time	15h 45m
Direct flights	None

The fastest flight from Cardiff to Washington, D.C. takes 15h 45m

There are no direct flights from Cardiff to Washington, D.C.. There are no popular flight routes from Cardiff to Washington, D.C..

Search flight deals

How far is Cardiff Wales to Washington, D.C. by plane?
A flight from Cardiff Wales to Washington, D.C. will travel around 3537.5 mi. In terms of flight time, this usually takes a little over 15h 45m.
When did momondo last update prices for flights from Cardiff Wales Airport to Washington, D.C.?
Prices for flights from Cardiff Wales Airport to Washington, D.C. were last updated today.
How old do you have to be to fly from Cardiff Wales Airport to Washington, D.C.?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Cardiff Wales Airport to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The travel and health documents required for your trip to Washington, D.C. can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C.. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Laurel

Colonial Beach

Tysons

Silver Spring

Towson

Fredericksburg

Gaithersburg

Rockville

Manassas

Springfield

Fairfax

Linthicum Heights

Bethesda

Glen Burnie

Why use momondo?

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

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 Cardiff to Washington, D.C. for you.

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

momondo does allow users to show only those flights to Washington, D.C. from Cardiff which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Cardiff to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Cardiff to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

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Fly into one of these airports located in Washington, D.C.

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

Cheap flights from Cardiff to Washington, D.C. from $1,090

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Cardiff to Washington, D.C. departing on 4/19. 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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Filter for what you want

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KLM flights from Cardiff to Washington, D.C.

Our best KLM deals on Cardiff to Washington, D.C. flight tickets

Delta flights from Cardiff to Washington, D.C.

Our best Delta deals on Cardiff to Washington, D.C. flight tickets

momondo Fare Finder

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

See travel insights to Washington, D.C. from

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

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

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

Cheap Cardiff to Washington, D.C. (CWL to WAS) flight deals and tips

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

Fastest flight time

Direct flights

Traveling to a place near Washington, D.C.?

Why use momondo?

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

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

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

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

An easier way to manage your Washington, D.C. 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.

Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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