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Cheap flights from Cardiff to Seattle from £570

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Cardiff to Seattle

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:20 - 11:47CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
33h 27m1 stop Amsterdam Schiphol
Multiple Airlines Logo
14:35 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 25m1 stop Amsterdam Schiphol
£570Multiple Airlines
Tue, 3 Nov - Tue, 10 Nov
Multiple Airlines Logo
10:20 - 11:47CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
33h 27m1 stop Amsterdam Schiphol
Multiple Airlines Logo
14:35 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 25m1 stop Amsterdam Schiphol
£571Multiple Airlines
Fri, 6 Nov - Fri, 13 Nov
Multiple Airlines Logo
10:20 - 11:47CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
33h 27m1 stop Amsterdam Schiphol
Multiple Airlines Logo
07:15 - 09:50SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 35m2 stops New York John F Kennedy Intl Amsterdam Schiphol
£574Multiple Airlines
Tue, 3 Nov - Tue, 10 Nov
KLM Logo
17:30 - 16:24CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
30h 54m2 stops Amsterdam Schiphol Salt Lake City
KLM Logo
17:48 - 09:45SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
31h 57m2 stops Portland Amsterdam Schiphol
£593KLM
Tue, 3 Nov - Tue, 10 Nov
KLM Logo
10:20 - 10:36CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
32h 16m2 stops Amsterdam Schiphol New York John F Kennedy Intl
KLM Logo
09:40 - 09:50SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
16h 10m2 stops Portland Amsterdam Schiphol
£594KLM
Fri, 6 Nov - Fri, 13 Nov
KLM Logo
17:30 - 19:04CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
57h 34m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson
KLM Logo
08:30 - 09:45SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
17h 15m2 stops Minneapolis St Paul Amsterdam Schiphol
£597KLM
Wed, 4 Nov - Wed, 11 Nov
Multiple Airlines Logo
09:00 - 00:35CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
23h 35m3 stops Belfast City London Heathrow Chicago O'Hare Intl
Multiple Airlines Logo
09:15 - 14:25SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
21h 10m3 stops Philadelphia London Heathrow Belfast City
£669Multiple Airlines
Fri, 6 Nov - Fri, 13 Nov
Multiple Airlines Logo
10:20 - 11:47CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
33h 27m1 stop Amsterdam Schiphol
Multiple Airlines Logo
14:35 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 25m1 stop Amsterdam Schiphol
£723Multiple Airlines
Wed, 4 Nov - Wed, 11 Nov
Multiple Airlines Logo
17:30 - 15:55CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
30h 25m3 stops Amsterdam Schiphol Bucharest Otopeni Intl Frankfurt am Main
Multiple Airlines Logo
14:35 - 13:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
14h 25m2 stops Reykjavik Keflavik Intl Dublin
£883Multiple Airlines
Wed, 4 Nov - Wed, 11 Nov
Multiple Airlines Logo
17:30 - 17:00CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
31h 30m3 stops Amsterdam Schiphol Kastrup Copenhagen Reykjavik Keflavik Intl
Multiple Airlines Logo
14:35 - 09:45SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
35h 10m3 stops Reykjavik Keflavik Intl Stockholm Arlanda Amsterdam Schiphol
£973Multiple Airlines
Tue, 3 Nov - Tue, 10 Nov

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KLM flights from Cardiff to Seattle

Our best KLM deals on Cardiff to Seattle flight tickets
KLM
3 Nov
CWL17:30Cardiff Wales
30h 54m
2 stops
SEA16:24Seattle/Tacoma Intl
10 Nov
SEA17:48Seattle/Tacoma Intl
31h 57m
2 stops
CWL09:45Cardiff Wales
£593
KLM
6 Nov
CWL10:20Cardiff Wales
32h 16m
2 stops
SEA10:36Seattle/Tacoma Intl
13 Nov
SEA09:40Seattle/Tacoma Intl
16h 10m
2 stops
CWL09:50Cardiff Wales
£594
KLM
4 Nov
CWL17:30Cardiff Wales
57h 34m
2 stops
SEA19:04Seattle/Tacoma Intl
11 Nov
SEA08:30Seattle/Tacoma Intl
17h 15m
2 stops
CWL09:45Cardiff Wales
£597

momondo Fare Finder

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

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Route

Depart

Return

Price

Cheapest return flight

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Tue 3/11

10:20-11:47

1 stop33h 27m

Seattle/Tacoma Intl

Tue 10/11

14:35-17:00

1 stop18h 25m

£570

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Fri 6/11

10:20-11:47

1 stop33h 27m

Seattle/Tacoma Intl

Fri 13/11

14:35-17:00

1 stop18h 25m

£571

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Tue 3/11

10:20-11:47

1 stop33h 27m

Seattle/Tacoma Intl

Tue 10/11

07:15-09:50

2 stops18h 35m

£574

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Tue 3/11

17:30-16:24

2 stops30h 54m

Seattle/Tacoma Intl

Tue 10/11

17:48-09:45

2 stops31h 57m

£593

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Fri 6/11

10:20-10:36

2 stops32h 16m

Seattle/Tacoma Intl

Fri 13/11

09:40-09:50

2 stops16h 10m

£594

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Wed 4/11

17:30-19:04

2 stops57h 34m

Seattle/Tacoma Intl

Wed 11/11

08:30-09:45

2 stops17h 15m

£597
Fastest return journey

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Fri 6/11

09:00-00:35

3 stops23h 35m

Seattle/Tacoma Intl

Fri 13/11

09:15-14:25

3 stops21h 10m

£669

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Wed 4/11

10:20-11:47

1 stop33h 27m

Seattle/Tacoma Intl

Wed 11/11

14:35-17:00

1 stop18h 25m

£723

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Wed 4/11

17:30-15:55

3 stops30h 25m

Seattle/Tacoma Intl

Wed 11/11

14:35-13:00

2 stops14h 25m

£883

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Tue 3/11

17:30-17:00

3 stops31h 30m

Seattle/Tacoma Intl

Tue 10/11

14:35-09:45

3 stops35h 10m

£972

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Seattle from

How to get the cheapest flight ticket from Cardiff to Seattle

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

Can stopping save me money on Cardiff to Seattle flights?

You could potentially save up to 36% on your flight if you consider stops on a Cardiff to Seattle flight.

When to book flights from Cardiff to Seattle

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

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

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

Best price found

£570

Direct flights

None
The best flight deal from Cardiff to Seattle found on momondo in the last 72 hours is £570
There are no direct flights from Cardiff to Seattle. There are no popular flight routes from Cardiff to Seattle.
Search flight deals

Frequently asked questions about flying from Cardiff to Seattle

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

    There are 4700.6 mi between Cardiff Wales and Seattle/Tacoma Intl.

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Cardiff Wales Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
Westport
Kirkland
Ashford
Tacoma
SeaTac
Kent
Tukwila
Fife

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Cardiff to Seattle for you.

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

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

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

Once all potential Cardiff to Seattle 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 Cardiff to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Cardiff to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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