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Cheap flights from Seattle to Cardiff from £978

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
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
£978KLM
Wed, 25 Nov - Sun, 13 Dec
KLM Logo
13:50 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
19h 10m2 stops Minneapolis St Paul Amsterdam Schiphol
KLM Logo
17:30 - 11:50CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
26h 20m1 stop Amsterdam Schiphol
£982KLM
Wed, 25 Nov - Sun, 13 Dec
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
£1,118KLM
Wed, 25 Nov - Sun, 13 Dec
Multiple Airlines Logo
14:35 - 13:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
14h 25m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
09:05 - 20:59CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
43h 54m3 stops Alicante Dublin Toronto Pearson Intl
£1,264Multiple Airlines
Wed, 25 Nov - Sun, 13 Dec
Multiple Airlines Logo
14:35 - 08:30SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
33h 55m3 stops Reykjavik Keflavik Intl Edinburgh Turnhouse Belfast City
Multiple Airlines Logo
09:05 - 20:59CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
43h 54m3 stops Alicante Dublin Toronto Pearson Intl
£1,523Multiple Airlines
Wed, 25 Nov - Sun, 13 Dec
Delta Logo
14:35 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 25m1 stop Amsterdam Schiphol
Delta Logo
10:20 - 23:53CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
21h 33m2 stops Amsterdam Schiphol Minneapolis St Paul
£1,726Delta
Wed, 23 Dec - Wed, 30 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
£1,912KLM
Wed, 23 Dec - Wed, 30 Dec
Delta Logo
11:36 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
21h 24m2 stops Minneapolis St Paul Amsterdam Schiphol
Delta Logo
10:20 - 23:53CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
21h 33m2 stops Amsterdam Schiphol Minneapolis St Paul
£1,915Delta
Wed, 23 Dec - Wed, 30 Dec
Multiple Airlines Logo
18:45 - 08:30SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
29h 45m2 stops London Heathrow Belfast City
Multiple Airlines Logo
09:00 - 16:50CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
39h 50m2 stops Belfast City London Heathrow
£3,965Multiple Airlines
Fri, 4 Dec - Fri, 11 Dec
Delta Logo
14:35 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 25m1 stop Amsterdam Schiphol
Delta Logo
10:20 - 22:03CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
19h 43m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County
£4,808Delta
Fri, 4 Dec - Fri, 11 Dec

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KLM flights from Seattle to Cardiff

Our best KLM deals on Seattle to Cardiff flight tickets
KLM
25 Nov
SEA14:35Seattle/Tacoma Intl
18h 25m
1 stop
CWL17:00Cardiff Wales
13 Dec
CWL17:30Cardiff Wales
26h 20m
1 stop
SEA11:50Seattle/Tacoma Intl
£978
KLM
25 Nov
SEA13:50Seattle/Tacoma Intl
19h 10m
2 stops
CWL17:00Cardiff Wales
13 Dec
CWL17:30Cardiff Wales
26h 20m
1 stop
SEA11:50Seattle/Tacoma Intl
£982
KLM
25 Nov
SEA14:05Seattle/Tacoma Intl
18h 55m
2 stops
CWL17:00Cardiff Wales
13 Dec
CWL17:30Cardiff Wales
29h 13m
2 stops
SEA14:43Seattle/Tacoma Intl
£1,118

Delta flights from Seattle to Cardiff

Our best Delta deals on Seattle to Cardiff flight tickets
Delta
23 Dec
SEA14:35Seattle/Tacoma Intl
18h 25m
1 stop
CWL17:00Cardiff Wales
30 Dec
CWL10:20Cardiff Wales
21h 33m
2 stops
SEA23:53Seattle/Tacoma Intl
£1,726
Delta
23 Dec
SEA11:36Seattle/Tacoma Intl
21h 24m
2 stops
CWL17:00Cardiff Wales
30 Dec
CWL10:20Cardiff Wales
21h 33m
2 stops
SEA23:53Seattle/Tacoma Intl
£1,915
Delta
4 Dec
SEA14:35Seattle/Tacoma Intl
18h 25m
1 stop
CWL17:00Cardiff Wales
11 Dec
CWL10:20Cardiff Wales
19h 43m
2 stops
SEA22:03Seattle/Tacoma Intl
£4,808

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

Wed 25/11

14:35-17:00

1 stop18h 25m

Cardiff Wales

Sun 13/12

17:30-11:50

1 stop26h 20m

£978

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Wed 25/11

13:50-17:00

2 stops19h 10m

Cardiff Wales

Sun 13/12

17:30-11:50

1 stop26h 20m

£982

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Wed 25/11

14:05-17:00

2 stops18h 55m

Cardiff Wales

Sun 13/12

17:30-14:43

2 stops29h 13m

£1,118

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Wed 25/11

14:35-13:00

2 stops14h 25m

Cardiff Wales

Sun 13/12

09:05-20:59

3 stops43h 54m

£1,264

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Wed 25/11

14:35-08:30

3 stops33h 55m

Cardiff Wales

Sun 13/12

09:05-20:59

3 stops43h 54m

£1,523

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Wed 23/12

14:35-17:00

1 stop18h 25m

Cardiff Wales

Wed 30/12

10:20-23:53

2 stops21h 33m

£1,726

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Wed 23/12

14:35-17:00

1 stop18h 25m

Cardiff Wales

Wed 30/12

17:30-11:50

1 stop26h 20m

£1,912

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Wed 23/12

11:36-17:00

2 stops21h 24m

Cardiff Wales

Wed 30/12

10:20-23:53

2 stops21h 33m

£1,915

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Fri 4/12

18:45-08:30

2 stops29h 45m

Cardiff Wales

Fri 11/12

09:00-16:50

2 stops39h 50m

£3,965
Fastest return journey

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Fri 4/12

14:35-17:00

1 stop18h 25m

Cardiff Wales

Fri 11/12

10:20-22:03

2 stops19h 43m

£4,808

Flights are sorted by cheapest return flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to Cardiff from

How to get the cheapest flight ticket from Seattle to Cardiff

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Seattle/Tacoma Intl to Cardiff Wales?

Virgin Atlantic and Delta are the most popular carriers operating from Seattle/Tacoma Intl to Cardiff Wales

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

£2,277

Fastest flight time

18h 25m

Direct flights

None
The best one-way flight to Cardiff from Seattle in the past 72 hours is £2,277. The best return flight deal from Seattle to Cardiff found on momondo in the last 72 hours is £978.
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.

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.

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Find better results for your trip to the United Kingdom

Airports servicing Wales

Holyhead Anglesey Airport