What is the cheapest airline that flies from Cardiff Wales to Washington, D.C.?

British Airways is the most popular carrier operating from Cardiff Wales to Washington, D.C.

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.

$491 Cheap Flights from Cardiff to Washington, D.C. in 2026

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:40 pm - 8:24 pm

CWL

IAD

31h 44m

3 stops

8:30 pm - 10:00 pm

IAD

CWL

20h 30m

2 stops

$825Multiple Airlines

dom., ago. 23 - dom., ago. 30

9:45 pm - 3:45 pm

CWL

IAD

23h 00m

1 stop

8:30 pm - 10:00 pm

IAD

CWL

20h 30m

2 stops

$939Multiple Airlines

dom., ago. 23 - dom., ago. 30

9:45 pm - 3:10 pm

CWL

IAD

22h 25m

2 stops

10:35 pm - 10:00 pm

IAD

CWL

18h 25m

2 stops

$960Multiple Airlines

dom., ago. 23 - dom., ago. 30

5:40 pm - 8:24 pm

CWL

IAD

31h 44m

3 stops

8:15 am - 10:00 pm

IAD

CWL

32h 45m

3 stops

$979Multiple Airlines

dom., ago. 23 - dom., ago. 30

5:15 pm - 3:35 pm

CWL

IAD

27h 20m

1 stop

5:40 pm - 9:15 am

IAD

CWL

10h 35m

1 stop

$996KLM

dom., ago. 23 - dom., ago. 30

5:15 pm - 3:46 pm

CWL

BWI

27h 31m

2 stops

2:18 pm - 4:45 pm

BWI

CWL

21h 27m

2 stops

$996KLM

jue., ago. 27 - jue., sep. 3

9:45 am - 3:35 pm

CWL

IAD

10h 50m

1 stop

12:29 pm - 9:15 am

IAD

CWL

15h 46m

2 stops

$1,021Delta

lun., jul. 27 - jue., ago. 6

9:45 am - 11:13 pm

CWL

IAD

18h 28m

2 stops

12:29 pm - 9:15 am

IAD

CWL

15h 46m

2 stops

$1,026Delta

mié., jul. 29 - mié., ago. 5

9:45 am - 12:41 am

CWL

IAD

19h 56m

2 stops

5:40 pm - 4:45 pm

IAD

CWL

18h 05m

1 stop

$1,027Virgin Atlantic

jue., jul. 23 - jue., ago. 6

5:15 pm - 10:59 pm

CWL

DCA

34h 44m

2 stops

6:35 pm - 9:15 am

DCA

CWL

33h 40m

2 stops

$1,033Virgin Atlantic

dom., ago. 23 - dom., ago. 30

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Delta flights from Cardiff to Washington, D.C.

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

Delta

Nov 2

CWL10:20 amCardiff Wales

17h 44m

2 stops

DCA11:04 pmWashington, D.C. Reagan-National

Nov 21

DCA12:00 pmWashington, D.C. Reagan-National

16h 50m

2 stops

CWL9:50 amCardiff Wales

$884

Delta

Jul 27

CWL9:45 amCardiff Wales

10h 50m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

Aug 6

IAD12:29 pmWashington, D.C. Dulles Intl

15h 46m

2 stops

CWL9:15 amCardiff Wales

$1,021

Delta

Jul 29

CWL9:45 amCardiff Wales

18h 28m

2 stops

IAD11:13 pmWashington, D.C. Dulles Intl

Aug 5

IAD12:29 pmWashington, D.C. Dulles Intl

15h 46m

2 stops

CWL9:15 amCardiff Wales

$1,026

KLM flights from Cardiff to Washington, D.C.

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

KLM

Aug 23

CWL5:15 pmCardiff Wales

27h 20m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

Aug 30

IAD5:40 pmWashington, D.C. Dulles Intl

10h 35m

1 stop

CWL9:15 amCardiff Wales

$996

KLM

Jul 28

CWL9:45 amCardiff Wales

10h 50m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

Aug 4

IAD5:40 pmWashington, D.C. Dulles Intl

18h 05m

1 stop

CWL4:45 pmCardiff Wales

$1,020

KLM

Jul 28

CWL5:15 pmCardiff Wales

27h 20m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

Aug 6

IAD12:29 pmWashington, D.C. Dulles Intl

15h 46m

2 stops

CWL9:15 amCardiff Wales

$1,024

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

dom. 8/23

5:40 pm-8:24 pm

3 stops31h 44m

Washington, D.C. Dulles Intl

dom. 8/30

8:30 pm-10:00 pm

2 stops20h 30m

$825

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

dom. 8/23

9:45 pm-3:45 pm

1 stop23h 00m

Washington, D.C. Dulles Intl

dom. 8/30

8:30 pm-10:00 pm

2 stops20h 30m

$939

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

dom. 8/23

9:45 pm-3:10 pm

2 stops22h 25m

Washington, D.C. Dulles Intl

dom. 8/30

10:35 pm-10:00 pm

2 stops18h 25m

$960

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

dom. 8/23

5:40 pm-8:24 pm

3 stops31h 44m

Washington, D.C. Dulles Intl

dom. 8/30

8:15 am-10:00 pm

3 stops32h 45m

$979

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

dom. 8/23

5:15 pm-3:35 pm

1 stop27h 20m

Washington, D.C. Dulles Intl

dom. 8/30

5:40 pm-9:15 am

1 stop10h 35m

$996

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

jue. 8/27

5:15 pm-3:46 pm

2 stops27h 31m

Baltimore/Washington

jue. 9/3

2:18 pm-4:45 pm

2 stops21h 27m

$996

Quickest round-trip

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

lun. 7/27

9:45 am-3:35 pm

1 stop10h 50m

Washington, D.C. Dulles Intl

jue. 8/6

12:29 pm-9:15 am

2 stops15h 46m

$1,021

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

mié. 7/29

9:45 am-11:13 pm

2 stops18h 28m

Washington, D.C. Dulles Intl

mié. 8/5

12:29 pm-9:15 am

2 stops15h 46m

$1,026

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

jue. 7/23

9:45 am-12:41 am

2 stops19h 56m

Washington, D.C. Dulles Intl

jue. 8/6

5:40 pm-4:45 pm

1 stop18h 05m

$1,027

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

dom. 8/23

5:15 pm-10:59 pm

2 stops34h 44m

Washington, D.C. Reagan-National

dom. 8/30

6:35 pm-9:15 am

2 stops33h 40m

$1,033

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted 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

Prices

Airlines

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	10h 50m
Direct flights	None

The fastest flight from Cardiff to Washington, D.C. takes 10h 50m

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

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

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 10h 50m.
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

Arlington

Gettysburg

Waldorf

Laurel

Woodbridge

Fredericksburg

Gaithersburg

Linthicum Heights

Rockville

Colonial Beach

Towson

Manassas

Silver Spring

Tysons

Springfield

Fairfax

Bethesda

Edgewood

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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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Cheap flights from Cardiff to Washington, D.C. from $491

This is the cheapest one-way 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 9/18. 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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Delta flights from Cardiff to Washington, D.C.

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

KLM flights from Cardiff to Washington, D.C.

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

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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?

What is the cheapest airline that flies from Cardiff Wales to Washington, D.C.?

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

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

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

Why use momondo?

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

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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.

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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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