HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Cardiff

$672+ Cheap flights from Seattle (SEA) to Cardiff (CWL)

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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CWL
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Cardiff with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Seattle to Cardiff

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Cardiff (CWL). 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 November 21, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$853
(KLM)

One-way from

$672
(EaseMyTrip)
Provider with most accurate pricing for Seattle/Tacoma Intl-Cardiff Wales flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Cardiff Wales flights.
Search Deals
From Seattle/Tacoma Intl to Cardiff Wales
Search Deals
One-way flight from Seattle/Tacoma Intl to Cardiff Wales
Search Deals

Find flight deals from Seattle to Cardiff

Best flights from Seattle to Cardiff
Discover carefully curated flight deals from Seattle to Cardiff that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 21, 2024.

This KLM deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/92:09 pmSEA - CWL
1 stop18h 46mKLM
Tue 1/145:25 pmCWL - SEA
1 stop26h 25mKLM
Deal found 11/20$853
This Lucky2Go deal was found by Cheapflights users on 11/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lucky2Go is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/510:15 amSEA - CWL
2 stops39h 40mVirgin Atlantic
Sun 1/125:25 pmCWL - SEA
1 stop26h 25mVirgin Atlantic
Deal found 11/21$1,130
This Billigflug deal was found by Cheapflights users on 11/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/57:00 pmSEA - CWL
2 stops30h 55mMultiple Airlines
Sun 1/125:25 pmCWL - SEA
1 stop26h 25mMultiple Airlines
Deal found 11/21$1,238

Find flights from Seattle to Cardiff within your budget

Customize your flight search to find flights from Seattle 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 2,612,795 searches. Data last updated November 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Tue 3/25

3:15 pm-4:55 pm

1 stop18h 40m

Cardiff Wales

Mon 3/31

5:15 pm-4:05 pm

1 stop30h 50m

$809

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Tue 3/25

7:20 am-9:50 am

2 stops19h 30m

Cardiff Wales

Mon 3/31

9:45 am-4:05 pm

1 stop14h 20m

$858

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sun 1/5

10:15 am-9:55 am

2 stops39h 40m

Cardiff Wales

Sun 1/12

5:25 pm-11:50 am

1 stop26h 25m

$1,130

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sun 1/5

7:00 pm-9:55 am

2 stops30h 55m

Cardiff Wales

Sun 1/12

5:25 pm-11:50 am

1 stop26h 25m

$1,238

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sun 1/5

9:20 pm-4:55 pm

2 stops35h 35m

$672

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sun 1/5

7:00 am-4:20 pm

3 stops25h 20m

$981

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/21

Compare providers for flights from Seattle to Cardiff

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Cardiff in November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Cardiff flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Cardiff flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Cardiff flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Cardiff flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Cardiff flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Seattle with our price prediction graph.
Estimated round-trip 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 Seattle to Cardiff

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

What is the cheapest time of day to fly from SEA to CWL?

Find hourly flight availability from Seattle to Cardiff. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 21, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Cardiff as you normally would.

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 2.0 - 3.5 inches per month. January is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Cardiff when rainfall is around 2.0 in.

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 64.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 39.2 F).

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 November 21, 2024.
KLM
7.8
Good
1,349 reviews

Boarding

7.9

Entertainment

7.2

Food

7.3

Comfort

7.7

Overall

7.8

Crew

8.4

Reviews

1 / 10

Flight performed by El Al. The aircraft was dirty. Gum in front pcket. Poorly maintained.

KLM
7.8
Good
1,349 reviews
KLM
7.8
Good
1,349 reviews

Boarding

7.9

Entertainment

7.2

Food

7.3

Comfort

7.7

Overall

7.8

Crew

8.4

Reviews

1 / 10

Flight performed by El Al. The aircraft was dirty. Gum in front pcket. Poorly maintained.

Virgin Atlantic
7.5
Good
663 reviews
KLM
7.8
Good
1,349 reviews

Boarding

7.9

Entertainment

7.2

Food

7.3

Comfort

7.7

Overall

7.8

Crew

8.4

Reviews

1 / 10

Flight performed by El Al. The aircraft was dirty. Gum in front pcket. Poorly maintained.

Related info for your journey

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

  • What are the cheapest airlines flying from Seattle to Cardiff round-trip?

    Cheapflights users have booked flights from Seattle to Cardiff round-trip from $853. Another airline that can offer you cheap pricing is Virgin Atlantic.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Cardiff?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Cardiff (average of $767). Flying from Seattle to Cardiff in June is currently the most expensive (average of $1,624). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Cardiff

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Manchester flights
Portland to Manchester flights
Seattle to Bristol flights
Spokane to Manchester flights
Portland to Bristol flights

Top airline flying from Seattle to Cardiff

Discover the top airline that operate flights from Seattle to Cardiff. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,612,795 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$721Average$1,132FlexibilityNo cancel feeOn-time75%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines