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Cheap flights from Cardiff to District of Columbia from £738

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/5. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — IAD
5 May — 12 May1
1 adult

Cheap 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 30 April 2025.

Round-trip from

£738
29/5-18/6
  • 29/5-18/6
  • 5 total stops
  • 49h 42m total
  • Cardiff to District of Columbia
Search Deals

Find flight deals from Cardiff to District of Columbia

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 30 April 2025.

Thu 29/507:55CWL - IAD
2 stops19h 15mMultiple Airlines
Wed 18/608:18IAD - CWL
3 stops30h 27mMultiple Airlines
Deal found 30/4£738
Sat 28/609:45CWL - IAD
2 stops14h 30mAir France
Sat 19/721:20IAD - CWL
2 stops14h 30mAir France
Deal found 29/4£812
Sat 28/609:45CWL - IAD
1 stop10h 50mKLM
Sat 19/717:25IAD - CWL
1 stop18h 25mKLM
Deal found 29/4£841
Sat 28/609:45CWL - DCA
2 stops18h 48mDelta
Sat 19/711:00DCA - CWL
2 stops17h 15mDelta
Deal found 30/4£943
Sat 28/609:45CWL - DCA
2 stops18h 12mMultiple Airlines
Sat 19/714:05DCA - CWL
2 stops14h 10mMultiple Airlines
Deal found 29/4£955

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 30 April 2025.
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

Thu 29/5

07:55-22:10

2 stops19h 15m

Washington, D.C. Dulles Intl

Wed 18/6

08:18-19:45

3 stops30h 27m

£738

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 28/6

09:45-19:15

2 stops14h 30m

Washington, D.C. Dulles Intl

Sat 19/7

21:20-16:50

2 stops14h 30m

£812

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sat 28/6

09:45-15:35

1 stop10h 50m

Washington, D.C. Dulles Intl

Sat 19/7

17:25-16:50

1 stop18h 25m

£841

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Sat 28/6

09:45-23:33

2 stops18h 48m

Washington, D.C. Reagan-National

Sat 19/7

11:00-09:15

2 stops17h 15m

£943

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Sat 28/6

09:45-22:57

2 stops18h 12m

Washington, D.C. Reagan-National

Sat 19/7

14:05-09:15

2 stops14h 10m

£955

Flights are sorted by cheapest return flights first.

Deals found on 30/4

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, January is the cheapest month in which you can book a flight from Cardiff to District of Columbia (average of £599). Flying from Cardiff to District of Columbia in July is currently the most expensive (average of £947). 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.

Rainfall in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in District of Columbia ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit District of Columbia when rainfall is around 66.0 mm.

Temperature in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to District of Columbia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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 30 April 2025.
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,934 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.4
Good
1,446 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • 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, January is the cheapest month in which you can book a flight from Cardiff to District of Columbia (average of £599). Flying from Cardiff to District of Columbia in July is currently the most expensive (average of £947). 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

Browse thousands of different options on Cheapflights for your next trip

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