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Cheap flights from Cardiff to Washington, D.C. from £494

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/10. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — WAS
14 nov. — 21 nov.1
1 adult
1 adult, Economy

Cheap flight deals from Cardiff to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 15 octobre 2025.

Round-trip from

£706

One-way from

£494
27/11-4/12
  • 27/11-4/12
  • 6 total stops
  • 53h 50m total
  • Cardiff to Washington, D.C.
Search Deals
22/10
  • 22/10
  • 3 total stops
  • 41h 29m total
  • Cardiff to Washington, D.C.
Search Deals

Find flight deals from Cardiff to Washington, D.C.

Enter your travel dates to find the best prices.

Cheapest flights from Cardiff to Washington, D.C.
Explore the most affordable flight options available from Cardiff to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 octobre 2025.

jeu. 27/1117:25CWL - IAD
3 stops30h 20mMultiple Airlines
jeu. 4/1217:30IAD - CWL
3 stops23h 30mMultiple Airlines
Deal found 13/10£706
jeu. 27/1117:25CWL - IAD
1 stop27h 40mKLM
jeu. 4/1218:05IAD - CWL
1 stop10h 45mKLM
Deal found 13/10£745
jeu. 27/1110:20CWL - IAD
2 stops13h 48mVirgin Atlantic
jeu. 4/1218:05IAD - CWL
1 stop10h 45mVirgin Atlantic
Deal found 13/10£749
jeu. 27/1117:25CWL - DCA
2 stops27h 37mKLM
jeu. 4/1212:37DCA - CWL
2 stops16h 13mKLM
Deal found 13/10£749
ven. 28/1110:20CWL - IAD
2 stops13h 48mDelta
ven. 5/1212:19IAD - CWL
2 stops16h 31mDelta
Deal found 14/10£778
ven. 28/1110:20CWL - DCA
2 stops15h 55mKLM
ven. 5/1214:55DCA - CWL
2 stops13h 55mKLM
Deal found 14/10£778
ven. 28/1117:15CWL - IAD
1 stop27h 50mVirgin Atlantic
ven. 5/1218:05IAD - CWL
1 stop10h 45mVirgin Atlantic
Deal found 14/10£823
jeu. 27/1110:30CWL - DCA
2 stops17h 05mMultiple Airlines
jeu. 4/1206:59DCA - CWL
3 stops34h 01mMultiple Airlines
Deal found 13/10£885
ven. 28/1122:25CWL - BWI
3 stops29h 52mMultiple Airlines
ven. 5/1219:40BWI - CWL
2 stops19h 00mMultiple Airlines
Deal found 14/10£912
ven. 28/1122:25CWL - IAD
2 stops23h 02mMultiple Airlines
ven. 5/1218:50IAD - CWL
3 stops19h 50mMultiple Airlines
Deal found 14/10£926
jeu. 27/1117:25CWL - BWI
2 stops30h 15mMultiple Airlines
jeu. 4/1219:40BWI - CWL
2 stops16h 05mMultiple Airlines
Deal found 13/10£931
ven. 28/1110:20CWL - DCA
3 stops27h 35mMultiple Airlines
ven. 5/1206:00DCA - CWL
3 stops22h 50mMultiple Airlines
Deal found 14/10£1,049

Cheapflights Fare Finder

 
Customise your flight search to find flights from Cardiff to Washington, D.C. 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, Cheapflights users made 858,174 searches. Data last updated 15 octobre 2025.
Use the filters below to find and compare flights from Cardiff to Washington, D.C. that are best for you.

Fly from

Cardiff

Fly to

Washington, D.C.

Route

Depart

Return

Price

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

jeu. 27/11

17:25-18:45

3 stops30h 20m

Washington, D.C. Dulles Intl

jeu. 4/12

17:30-22:00

3 stops23h 30m

£706

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

jeu. 27/11

17:25-16:05

1 stop27h 40m

Washington, D.C. Dulles Intl

jeu. 4/12

18:05-09:50

1 stop10h 45m

£745

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

jeu. 27/11

10:20-19:08

2 stops13h 48m

Washington, D.C. Dulles Intl

jeu. 4/12

12:19-09:50

2 stops16h 31m

£749

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

jeu. 27/11

17:25-16:02

2 stops27h 37m

Washington, D.C. Reagan-National

jeu. 4/12

12:37-09:50

2 stops16h 13m

£749

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

ven. 28/11

10:20-19:08

2 stops13h 48m

Washington, D.C. Dulles Intl

ven. 5/12

12:19-09:50

2 stops16h 31m

£778

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

ven. 28/11

10:20-19:08

2 stops13h 48m

Washington, D.C. Dulles Intl

ven. 5/12

18:05-09:50

1 stop10h 45m

£778

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

ven. 28/11

10:20-21:15

2 stops15h 55m

Washington, D.C. Reagan-National

ven. 5/12

14:55-09:50

2 stops13h 55m

£778

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

jeu. 19/2

10:20-23:08

2 stops17h 48m

Washington, D.C. Reagan-National

lun. 23/2

13:45-16:55

2 stops22h 10m

£783

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

jeu. 19/2

10:20-00:07

2 stops18h 47m

Washington, D.C. Dulles Intl

lun. 23/2

19:50-09:50

2 stops33h 00m

£784

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

jeu. 19/2

10:20-09:11

2 stops27h 51m

Washington, D.C. Dulles Intl

lun. 23/2

18:05-16:55

1 stop17h 50m

£785

Flights are sorted by cheapest return flights first.

Deals found on 14/10

Showing 1-10 of 20 results
1
2

Best time to book a flight from Cardiff to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Cardiff with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Cardiff to Washington, D.C.

What is the cheapest month to book a flight from Cardiff to Washington, D.C.?

Currently, February is the cheapest month in which you can book a flight from Cardiff to Washington, D.C. (average of £530). Flying from Cardiff to Washington, D.C. in July is currently the most expensive (average of £810). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated 15 octobre 2025.
Get a feel of what it's like to fly with KLM from Cardiff to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,402 reviews
Check prices

Crew

8.4

Overall

7.7

Food

7.2

Comfort

7.6

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,402 reviews
KLM
7.7
Good
1,402 reviews
Check prices

Crew

8.4

Overall

7.7

Food

7.2

Comfort

7.6

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Related info for your journey

Find useful and relevant information for your journey from Cardiff to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Cardiff to Washington, D.C.?

    Cardiff Wales (CWL), located 9.1 mi from the city center, is the airport you fly out of when you book flights from Cardiff to Washington, D.C.. 0 airlines have flights from Cardiff Wales to Washington, D.C. on a regular basis. Booking flights from Cardiff Wales to Washington, D.C. should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. per day.

  • How long is the flight from Cardiff to Washington, D.C.?

    There are many flights that can get you from Cardiff to Washington, D.C. in 13h 48m. Fly via KLM, Virgin Atlantic, or Delta to get the fastest option. Airlines will cover a distance of 3548 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from Cardiff to Washington, D.C.?

    The most popular route from Cardiff to Washington, D.C. is Cardiff Wales - Baltimore/Washington. You may also consider Cardiff Wales - Washington, D.C. Reagan-National or Cardiff Wales - Washington, D.C. Dulles Intl.

  • Can I find deals for flights from Cardiff to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Cardiff to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Cardiff to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cardiff to Washington, D.C..

  • Can I find deals for business class flights from Cardiff to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Cardiff to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Cardiff to Washington, D.C.?

    Currently, February is the cheapest month in which you can book a flight from Cardiff to Washington, D.C. (average of £530). Flying from Cardiff to Washington, D.C. in July is currently the most expensive (average of £810). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Woodbridge
Arlington
Alexandria
College Park
Tysons

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Alternative routes for Cardiff to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
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Manchester to Reagan-National flights
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Cardiff to Reagan-National flights
Cardiff to Dulles Intl flights

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