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Cheap flights from Washington to Cardiff from £679

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CWL
26 Feb — 5 Mar1
1 adult

Cheap flight deals from Washington to Cardiff

Keep the following information in mind while searching for Washington to Cardiff flight deals. Data was last updated 21 February 2025.

Round-trip from

£679

Popular in

June

Cheapest in

April
3/4-10/4
  • 3/4-10/4
  • 4 total stops
  • 33h 00m total
  • Washington to Cardiff
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£178 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£40 potential savings vs. average return price).
Search Deals

Find flight deals from Washington to Cardiff

Cheapest flights from Washington to Cardiff
Explore the most affordable flight options available from Washington to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Thu 3/415:45SEA - CWL
2 stops17h 00mMultiple Airlines
Thu 10/409:50CWL - SEA
2 stops16h 00mMultiple Airlines
Deal found 20/2£679
Thu 3/418:10SEA - CWL
1 stop14h 35mKLM
Thu 10/409:50CWL - SEA
1 stop14h 10mKLM
Deal found 20/2£706
Thu 3/413:30SEA - CWL
2 stops19h 15mDelta
Thu 10/409:50CWL - SEA
1 stop14h 10mDelta
Deal found 20/2£711
Tue 6/518:10SEA - CWL
1 stop14h 35mVirgin Atlantic
Sat 17/517:35CWL - SEA
1 stop26h 05mVirgin Atlantic
Deal found 20/2£798

Find flights from Washington to Cardiff within your budget

Customise your flight search to find flights from Washington to Cardiff 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 February 2025.

Fly from

Washington

Fly to

Cardiff

Route

Depart

Return

Price

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Thu 3/4

15:45-16:45

2 stops17h 00m

Cardiff Wales

Thu 10/4

09:50-17:50

2 stops16h 00m

£679

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Thu 3/4

18:10-16:45

1 stop14h 35m

Cardiff Wales

Thu 10/4

09:50-16:00

1 stop14h 10m

£706

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Thu 3/4

13:30-16:45

2 stops19h 15m

Cardiff Wales

Thu 10/4

09:50-16:00

1 stop14h 10m

£711

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Tue 6/5

18:10-16:45

1 stop14h 35m

Cardiff Wales

Sat 17/5

17:35-11:40

1 stop26h 05m

£798

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Best time to book a flight from Washington to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Washington 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.

Travel insights for flights from Washington to Cardiff

Get recent, data-driven insights about flights from Washington to Cardiff including ideal travel times, pricing trends, and more.

Rainfall in Cardiff by month

Plan your trip to Cardiff by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Cardiff ranges from 50.0 - 90.0 inches per month. January is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Cardiff when rainfall is around 50.0 mm.

Temperature in Cardiff by month

Plan your trip to Cardiff by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Cardiff, 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 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Cardiff

Get insights into the airlines that provide service to Cardiff. 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 Cardiff. Reviews last updated 21 February 2025.
Delta
8.0
Very Good
8,212 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very Good
8,212 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Washington to Cardiff. 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 into for flights to Cardiff from Washington?

    Cardiff Wales (CWL), located 9.1 mi from the city center, is the airport you fly into when you book flights from Washington to Cardiff.

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

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

  • How can I find direct flights from Washington to Cardiff?

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

  • Can I find deals for business class flights from Washington to Cardiff?

    Yes. Cheapflights offers flight deals from Washington to Cardiff 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 State of Washington to Cardiff?

    Currently, July is the cheapest month in which you can book a flight from State of Washington to Cardiff (average of £169). Flying from State of Washington to Cardiff in December is currently the most expensive (average of £263). 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?

Book flights to Washington if you plan to visit one of these locations
Barry
Bridgend

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Alternative routes for Washington to Cardiff

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