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Cheap flights from Cardiff to Washington, D.C. from £574

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — WAS
23 May — 30 May1
1 adult
1 adult, Economy, 0 bags

Cheap 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 23 April 2026.

Wed 3/623:30
CWL
-
DCA
3 stops27h 25m
Multiple Airlines
Wed 10/606:00
DCA
-
CWL
2 stops23h 15m
Multiple Airlines
Deal found 19/4£574
Wed 3/623:30
CWL
-
IAD
3 stops25h 59m
Multiple Airlines
Wed 10/608:18
IAD
-
CWL
2 stops20h 57m
Multiple Airlines
Deal found 19/4£602
Tue 19/523:15
CWL
-
IAD
3 stops27h 10m
Multiple Airlines
Tue 26/516:05
IAD
-
CWL
2 stops26h 00m
Multiple Airlines
Deal found 21/4£644
Tue 19/523:15
CWL
-
DCA
3 stops28h 13m
Multiple Airlines
Tue 26/518:55
DCA
-
CWL
2 stops23h 10m
Multiple Airlines
Deal found 21/4£644
Thu 4/611:35
CWL
-
IAD
1 stop13h 54m
Multiple Airlines
Thu 11/609:55
IAD
-
CWL
2 stops31h 25m
Multiple Airlines
Deal found 20/4£763
Fri 18/922:45
CWL
-
IAD
1 stop22h 00m
Multiple Airlines
Thu 24/920:45
IAD
-
CWL
1 stop20h 35m
Multiple Airlines
Deal found 22/4£804
Thu 19/1117:25
CWL
-
IAD
1 stop27h 20m
KLM
Thu 3/1217:35
IAD
-
CWL
1 stop11h 15m
KLM
Deal found 18/4£825
Wed 21/1009:45
CWL
-
DCA
2 stops18h 19m
Virgin Atlantic
Wed 4/1115:30
DCA
-
CWL
2 stops13h 20m
Virgin Atlantic
Deal found 18/4£902
Wed 3/612:00
CWL
-
BWI
2 stops36h 40m
British Airways
Wed 10/621:30
BWI
-
CWL
2 stops33h 00m
British Airways
Deal found 19/4£934
Tue 19/509:45
CWL
-
BWI
2 stops18h 32m
Delta
Tue 26/517:26
BWI
-
CWL
2 stops18h 19m
Delta
Deal found 21/4£944
Thu 19/1110:20
CWL
-
DCA
2 stops17h 44m
KLM
Thu 3/1215:30
DCA
-
CWL
2 stops13h 20m
KLM
Deal found 18/4£977
Sat 24/1009:45
CWL
-
DCA
2 stops18h 19m
KLM
Sat 7/1118:25
DCA
-
CWL
2 stops17h 25m
KLM
Deal found 18/4£980

Find 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 23 April 2026.

Round-trip from

£574
3/6-10/6
  • 3/6-10/6
  • 5 total stops
  • 50h 40m total
  • Cardiff to Washington, D.C.
Search Deals

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 23 April 2026.
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

Cheapest return flight

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Wed 3/6

23:30-22:28

2 stops27h 58m

Washington, D.C. Reagan-National

Wed 10/6

06:00-10:15

2 stops23h 15m

£575

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Wed 3/6

23:30-20:29

3 stops25h 59m

Washington, D.C. Dulles Intl

Wed 10/6

08:18-10:15

2 stops20h 57m

£602

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Tue 19/5

23:15-21:25

3 stops27h 10m

Washington, D.C. Dulles Intl

Tue 26/5

16:05-23:05

2 stops26h 00m

£644

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Tue 19/5

23:15-18:13

3 stops23h 58m

Washington, D.C. Reagan-National

Tue 26/5

16:20-23:05

3 stops25h 45m

£648

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 4/6

11:35-20:29

1 stop13h 54m

Washington, D.C. Dulles Intl

Thu 11/6

09:55-22:20

2 stops31h 25m

£763

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Fri 18/9

22:45-15:45

1 stop22h 00m

Washington, D.C. Dulles Intl

Thu 24/9

20:45-22:20

1 stop20h 35m

£804
Fastest return journey

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Fri 18/9

09:45-15:35

1 stop10h 50m

Washington, D.C. Dulles Intl

Thu 24/9

13:00-09:15

2 stops15h 15m

£849

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Fri 18/9

09:45-00:10

2 stops19h 25m

Washington, D.C. Dulles Intl

Thu 24/9

06:00-09:15

2 stops22h 15m

£853

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

Wed 3/6

12:00-19:40

2 stops36h 40m

Baltimore/Washington

Wed 10/6

21:30-11:30

2 stops33h 00m

£934

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

Tue 19/5

09:45-23:17

2 stops18h 32m

Baltimore/Washington

Tue 26/5

17:26-16:45

2 stops18h 19m

£944

Flights are sorted by cheapest return flights first.

Deals found on 19/4

Showing 1-10 of 12 resultsSorted by cheapest first
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.
No data available for this route at this time. Please check back soon.

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 23 April 2026.
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
7.8
Good
1,507 reviews
Check prices

Comfort

7.7

Boarding

7.8

Overall

7.8

Entertainment

7.1

Crew

8.4

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,507 reviews
KLM
7.8
Good
1,507 reviews
Check prices

Comfort

7.7

Boarding

7.8

Overall

7.8

Entertainment

7.1

Crew

8.4

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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 18h 32m. Fly via British Airways or Delta to get the fastest option. Airlines will cover a distance of 3505 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 - Washington, D.C. Dulles Intl. You may also consider Cardiff Wales - Baltimore/Washington or Cardiff Wales - Washington, D.C. Reagan-National.

  • 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.

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
Gaithersburg
Woodbridge
Arlington
Alexandria

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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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