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Cheap flights from Seattle to Cardiff from £855

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Seattle to Cardiff

Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
07:15 - 09:45SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 30m2 stops New York John F Kennedy Intl Amsterdam Schiphol
KLM Logo
17:30 - 11:50CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
26h 20m1 stop Amsterdam Schiphol
£855KLM
Mon, 23 Nov - Mon, 30 Nov
Virgin Atlantic Logo
08:30 - 09:50SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
41h 20m2 stops Minneapolis St Paul Amsterdam Schiphol
Virgin Atlantic Logo
10:20 - 11:21CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
33h 01m2 stops Amsterdam Schiphol Boston Logan Intl
£865Virgin Atlantic
Fri, 27 Nov - Wed, 16 Dec
KLM Logo
14:35 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 25m1 stop Amsterdam Schiphol
KLM Logo
10:20 - 23:53CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
21h 33m2 stops Amsterdam Schiphol Minneapolis St Paul
£906KLM
Wed, 9 Dec - Wed, 16 Dec
KLM Logo
14:35 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 25m1 stop Amsterdam Schiphol
KLM Logo
17:30 - 14:43CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
29h 13m2 stops Amsterdam Schiphol Salt Lake City
£913KLM
Mon, 7 Dec - Mon, 14 Dec
KLM Logo
07:15 - 09:45SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 30m2 stops New York John F Kennedy Intl Amsterdam Schiphol
KLM Logo
17:30 - 14:43CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
29h 13m2 stops Amsterdam Schiphol Salt Lake City
£916KLM
Mon, 7 Dec - Mon, 14 Dec
Delta Logo
07:20 - 09:45SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 25m2 stops Chicago O'Hare Intl Amsterdam Schiphol
Delta Logo
10:20 - 23:53CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
21h 33m2 stops Amsterdam Schiphol Minneapolis St Paul
£917Delta
Wed, 9 Dec - Wed, 16 Dec
Multiple Airlines Logo
14:35 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 25m1 stop Amsterdam Schiphol
Multiple Airlines Logo
17:30 - 11:50CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
26h 20m1 stop Amsterdam Schiphol
£922Multiple Airlines
Fri, 27 Nov - Thu, 17 Dec
KLM Logo
14:35 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 25m1 stop Amsterdam Schiphol
KLM Logo
17:30 - 11:50CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
26h 20m1 stop Amsterdam Schiphol
£927KLM
Mon, 23 Nov - Mon, 30 Nov
KLM Logo
14:05 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 55m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol
KLM Logo
17:30 - 14:43CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
29h 13m2 stops Amsterdam Schiphol Salt Lake City
£946KLM
Mon, 23 Nov - Mon, 30 Nov
KLM Logo
14:35 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 25m1 stop Amsterdam Schiphol
KLM Logo
17:30 - 11:50CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
26h 20m1 stop Amsterdam Schiphol
£954KLM
Wed, 9 Dec - Wed, 16 Dec

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KLM flights from Seattle to Cardiff

Our best KLM deals on Seattle to Cardiff flight tickets
KLM
23 Nov
SEA07:15Seattle/Tacoma Intl
18h 30m
2 stops
CWL09:45Cardiff Wales
30 Nov
CWL17:30Cardiff Wales
26h 20m
1 stop
SEA11:50Seattle/Tacoma Intl
£855
KLM
9 Dec
SEA14:35Seattle/Tacoma Intl
18h 25m
1 stop
CWL17:00Cardiff Wales
16 Dec
CWL10:20Cardiff Wales
21h 33m
2 stops
SEA23:53Seattle/Tacoma Intl
£906
KLM
7 Dec
SEA14:35Seattle/Tacoma Intl
18h 25m
1 stop
CWL17:00Cardiff Wales
14 Dec
CWL17:30Cardiff Wales
29h 13m
2 stops
SEA14:43Seattle/Tacoma Intl
£913

Virgin Atlantic flights from Seattle to Cardiff

Our best Virgin Atlantic deals on Seattle to Cardiff flight tickets
Virgin Atlantic
27 Nov
SEA08:30Seattle/Tacoma Intl
41h 20m
2 stops
CWL09:50Cardiff Wales
16 Dec
CWL10:20Cardiff Wales
33h 01m
2 stops
SEA11:21Seattle/Tacoma Intl
£865
Virgin Atlantic
27 Nov
SEA09:45Seattle/Tacoma Intl
23h 15m
2 stops
CWL17:00Cardiff Wales
17 Dec
CWL17:30Cardiff Wales
29h 59m
2 stops
SEA15:29Seattle/Tacoma Intl
£979
Virgin Atlantic
27 Nov
SEA14:35Seattle/Tacoma Intl
18h 25m
1 stop
CWL17:00Cardiff Wales
17 Dec
CWL17:30Cardiff Wales
29h 59m
2 stops
SEA15:29Seattle/Tacoma Intl
£980

momondo Fare Finder

 
Use the filters below to find and compare flights from Seattle to Cardiff that are best for you.

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Route

Depart

Return

Price

Cheapest return flight

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Mon 23/11

07:15-09:45

2 stops18h 30m

Cardiff Wales

Mon 30/11

17:30-11:50

1 stop26h 20m

£855

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Fri 27/11

08:30-09:50

2 stops41h 20m

Cardiff Wales

Wed 16/12

10:20-11:21

2 stops33h 01m

£865
Fastest return journey

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Wed 9/12

14:35-17:00

1 stop18h 25m

Cardiff Wales

Wed 16/12

10:20-23:53

2 stops21h 33m

£906

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Mon 7/12

14:35-17:00

1 stop18h 25m

Cardiff Wales

Mon 14/12

17:30-14:43

2 stops29h 13m

£913

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Mon 7/12

07:15-09:45

2 stops18h 30m

Cardiff Wales

Mon 14/12

17:30-14:43

2 stops29h 13m

£916

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Wed 9/12

07:20-09:45

2 stops18h 25m

Cardiff Wales

Wed 16/12

10:20-23:53

2 stops21h 33m

£917

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Fri 27/11

14:35-17:00

1 stop18h 25m

Cardiff Wales

Thu 17/12

17:30-11:50

1 stop26h 20m

£922

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Mon 23/11

14:35-17:00

1 stop18h 25m

Cardiff Wales

Mon 30/11

17:30-11:50

1 stop26h 20m

£927

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Mon 23/11

14:05-17:00

2 stops18h 55m

Cardiff Wales

Mon 30/11

17:30-14:43

2 stops29h 13m

£946

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Wed 9/12

14:35-17:00

1 stop18h 25m

Cardiff Wales

Wed 16/12

17:30-11:50

1 stop26h 20m

£954

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Seattle to Cardiff

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Cardiff according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Seattle to Cardiff (SEA to CWL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Cardiff

Best price found

£855

Fastest flight time

18h 25m

Direct flights

None
The best flight deal from Seattle to Cardiff found on momondo in the last 72 hours is £855
The fastest flight from Seattle to Cardiff takes 18h 25m
There are no direct flights from Seattle to Cardiff. There are no popular flight routes from Seattle to Cardiff.
Search flight deals

Frequently asked questions about flying from Seattle to Cardiff

  • How far is Seattle/Tacoma Intl to Cardiff Wales by plane?

    Seattle/Tacoma Intl and Cardiff Wales are 4700.6 mi apart from one another. Typically, this will take 18h 25m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Cardiff Wales Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Cardiff Wales Airport refresh daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Cardiff Wales Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Cardiff Wales Airport.

  • What documentation or ID do you need to fly to Cardiff Wales Airport?

    The necessary travel and health documents for your Cardiff Wales Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Seattle to Cardiff

  • How do I get Price Alerts for flights from Seattle to Cardiff?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Seattle from Cardiff. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Seattle to Cardiff with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Travelling to a place near Cardiff?

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

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Cardiff?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Cardiff from Seattle.

Can I find flights from Seattle to Cardiff with flexible booking policies on momondo?

All flight searches from Seattle to Cardiff on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Cardiff?

Once all potential Seattle to Cardiff flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Seattle to Cardiff right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Seattle to Cardiff flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Cardiff trip

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Find better results for your trip to the United Kingdom

Airports servicing Wales

Holyhead Anglesey Airport