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Cheap flights from Cardiff to District of Columbia from £356

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 25/5. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — IAD
23 mar. — 30 mar.1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Cardiff to District of Columbia

Enter your travel dates to find the best prices.

Cheapest flights from Cardiff to District of Columbia
Explore the most affordable flight options available from Cardiff to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 februar 2026.

to. 8/1022:50
CWL
-
IAD
1 stop25h 25m
Multiple Airlines
ti. 13/1017:15
IAD
-
CWL
1 stop25h 10m
Multiple Airlines
Deal found 19/2£682
ma. 6/413:35
CWL
-
IAD
2 stops28h 55m
Multiple Airlines
ma. 13/417:55
IAD
-
CWL
2 stops16h 55m
Multiple Airlines
Deal found 20/2£746
fr. 29/522:45
CWL
-
IAD
1 stop22h 00m
Multiple Airlines
ma. 1/621:00
IAD
-
CWL
1 stop20h 50m
Multiple Airlines
Deal found 18/2£751
to. 14/522:50
CWL
-
IAD
1 stop21h 55m
Multiple Airlines
sø. 17/520:55
IAD
-
CWL
1 stop20h 05m
Multiple Airlines
Deal found 20/2£753
to. 14/509:45
CWL
-
IAD
2 stops42h 11m
Virgin Atlantic
sø. 17/519:33
IAD
-
CWL
2 stops32h 42m
Virgin Atlantic
Deal found 20/2£763
to. 8/1009:45
CWL
-
DCA
2 stops17h 10m
KLM
ti. 13/1013:30
DCA
-
CWL
2 stops14h 45m
KLM
Deal found 19/2£767
fr. 29/517:15
CWL
-
DCA
3 stops34h 13m
Multiple Airlines
ma. 1/612:45
DCA
-
CWL
2 stops16h 30m
Multiple Airlines
Deal found 18/2£807
ma. 6/417:15
CWL
-
DCA
2 stops30h 44m
KLM
ma. 13/419:56
DCA
-
CWL
2 stops32h 19m
KLM
Deal found 20/2£853
ma. 6/417:15
CWL
-
DCA
2 stops28h 45m
Multiple Airlines
ma. 13/420:38
DCA
-
CWL
2 stops55h 37m
Multiple Airlines
Deal found 20/2£906
to. 26/210:20
CWL
-
DCA
2 stops16h 52m
Multiple Airlines
to. 5/306:05
DCA
-
CWL
2 stops22h 45m
Multiple Airlines
Deal found 20/2£1,366
sø. 1/1110:20
CWL
-
DCA
2 stops18h 10m
Virgin Atlantic
ma. 2/1117:15
DCA
-
CWL
2 stops18h 40m
Virgin Atlantic
Deal found 21/2£1,682

Find flight deals from Cardiff to District of Columbia

Keep the following information in mind while searching for Cardiff to District of Columbia flight deals. Data was last updated 21 februar 2026.

Round-trip from

£746

One-way from

£356
6/4-13/4
  • 6/4-13/4
  • 4 total stops
  • 45h 50m total
  • Cardiff to District of Columbia
Search Deals
25/5
  • 25/5
  • 3 total stops
  • 45h 45m total
  • Cardiff to District of Columbia
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Cardiff to District of Columbia 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 21 februar 2026.
Use the filters below to find and compare flights from Cardiff to District of Columbia that are best for you.

Fly from

Cardiff

Fly to

District of Columbia

Route

Depart

Return

Price

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

fr. 29/5

22:45-15:45

1 stop22h 00m

Washington, D.C. Dulles Intl

ma. 1/6

21:00-22:50

1 stop20h 50m

£751

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

to. 14/5

22:50-15:45

1 stop21h 55m

Washington, D.C. Dulles Intl

sø. 17/5

20:55-22:00

1 stop20h 05m

£753

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

fr. 29/5

17:15-22:28

3 stops34h 13m

Washington, D.C. Reagan-National

ma. 1/6

12:45-10:15

2 stops16h 30m

£807

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

ma. 6/4

22:25-21:25

3 stops28h 00m

Washington, D.C. Dulles Intl

ma. 13/4

20:30-22:50

3 stops21h 20m

£836

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

ma. 6/4

17:15-18:59

2 stops30h 44m

Washington, D.C. Reagan-National

ma. 13/4

19:56-09:15

2 stops32h 19m

£853

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

fr. 29/5

17:15-15:35

1 stop27h 20m

Washington, D.C. Dulles Intl

ma. 1/6

12:58-09:15

2 stops15h 17m

£886

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

ma. 6/4

17:15-17:00

2 stops28h 45m

Washington, D.C. Reagan-National

ma. 13/4

20:38-09:15

2 stops55h 37m

£906

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

fr. 3/4

17:15-15:35

1 stop27h 20m

Washington, D.C. Dulles Intl

fr. 10/4

17:40-17:05

1 stop18h 25m

£1,089

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

fr. 3/4

09:45-15:35

1 stop10h 50m

Washington, D.C. Dulles Intl

fr. 10/4

17:32-17:05

2 stops18h 33m

£1,112

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

fr. 3/4

22:45-21:25

2 stops27h 40m

Washington, D.C. Dulles Intl

fr. 10/4

21:00-09:15

3 stops31h 15m

£1,112

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 12 results
1
2

Best time to book a flight from Cardiff to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia 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 District of Columbia

What is the cheapest month to book a flight from Cardiff to District of Columbia?

Currently, March is the cheapest month in which you can book a flight from Cardiff to District of Columbia (average of £451). Flying from Cardiff to District of Columbia in July is currently the most expensive (average of £863). 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 District of Columbia

Get insights into the airlines that provide service to District of Columbia. 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 District of Columbia. Reviews last updated 21 februar 2026.
Check out reviews from past customers who have flown with KLM from Cardiff to District of Columbia to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,457 reviews
Check prices

Overall

7.7

Entertainment

7.1

Crew

8.4

Boarding

7.8

Comfort

7.6

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
7.7
Good
1,457 reviews
KLM
7.7
Good
1,457 reviews
Check prices

Overall

7.7

Entertainment

7.1

Crew

8.4

Boarding

7.8

Comfort

7.6

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 District of Columbia. 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 District of Columbia?

    Cardiff Wales (CWL) is the airport you will fly out of if you book a flight from Cardiff to District of Columbia. It is only a 9.1 mi journey to Cardiff Wales (CWL) from Cardiff’s city center.

  • How long is the flight from Cardiff to District of Columbia?

    For as low as £853, KLM can have you in District of Columbia from Cardiff in 30h 44m. Airlines will cover a distance of 3535 mi.

  • Can I find deals for flights from Cardiff to District of Columbia that include hotel bookings?

    Yes. In addition to deals on Cardiff to District of Columbia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Cardiff to District of Columbia?

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

  • Can I find deals for business class flights from Cardiff to District of Columbia?

    Yes. Cheapflights offers flight deals from Cardiff to District of Columbia 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 District of Columbia?

    Currently, March is the cheapest month in which you can book a flight from Cardiff to District of Columbia (average of £451). Flying from Cardiff to District of Columbia in July is currently the most expensive (average of £863). 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

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