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Cheap flights from Cardiff to Seattle from £479

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.
KLM Logo
17:30 - 11:50CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
26h 20m1 stop Amsterdam Schiphol
KLM Logo
10:35 - 09:45SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
15h 10m2 stops Portland Amsterdam Schiphol
£741KLM
Mon, 21 Dec - Mon, 28 Dec
Virgin Atlantic Logo
10:20 - 21:54CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
19h 34m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County
Virgin Atlantic Logo
06:00 - 09:50SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
19h 50m2 stops Detroit Metropolitan Wayne County Amsterdam Schiphol
£761Virgin Atlantic
Mon, 21 Dec - Mon, 28 Dec
Multiple Airlines Logo
17:30 - 11:50CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
26h 20m1 stop Amsterdam Schiphol
Multiple Airlines Logo
14:35 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 25m1 stop Amsterdam Schiphol
£790Multiple Airlines
Sat, 19 Dec - Sat, 26 Dec
Virgin Atlantic Logo
17:30 - 11:50CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
26h 20m1 stop Amsterdam Schiphol
Virgin Atlantic Logo
19:56 - 09:50SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
29h 54m2 stops Portland Amsterdam Schiphol
£797Virgin Atlantic
Sat, 19 Dec - Sat, 26 Dec
KLM Logo
17:30 - 15:15CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
29h 45m2 stops Amsterdam Schiphol Paris Charles de Gaulle
KLM Logo
07:20 - 09:50SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 30m2 stops New York John F Kennedy Intl Amsterdam Schiphol
£1,020KLM
Sat, 19 Dec - Sat, 26 Dec
Multiple Airlines Logo
10:20 - 11:25CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
33h 05m3 stops Amsterdam Schiphol Dublin London Heathrow
Multiple Airlines Logo
18:45 - 21:40SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 55m2 stops London Heathrow Dublin
£1,177Multiple Airlines
Mon, 21 Dec - Mon, 28 Dec
Multiple Airlines Logo
17:30 - 17:00CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
31h 30m3 stops Amsterdam Schiphol Berlin Brandenburg Reykjavik Keflavik Intl
Multiple Airlines Logo
14:35 - 21:40SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
23h 05m3 stops Reykjavik Keflavik Intl London Gatwick Dublin
£1,262Multiple Airlines
Mon, 21 Dec - Mon, 28 Dec
Multiple Airlines Logo
08:15 - 22:53CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
22h 38m3 stops Dublin Chicago O'Hare Intl Minneapolis St Paul
Multiple Airlines Logo
07:45 - 13:55SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
22h 10m2 stops Toronto Pearson Intl Dublin
£1,393Multiple Airlines
Sat, 19 Dec - Sat, 26 Dec
Multiple Airlines Logo
08:15 - 22:53CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
22h 38m3 stops Dublin Chicago O'Hare Intl Minneapolis St Paul
Multiple Airlines Logo
13:50 - 09:50SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
36h 00m3 stops Frankfurt am Main Berlin Brandenburg Amsterdam Schiphol
£1,592Multiple Airlines
Sat, 19 Dec - Sat, 26 Dec

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Virgin Atlantic flights from Cardiff to Seattle

Our best Virgin Atlantic deals on Cardiff to Seattle flight tickets
Virgin Atlantic
21 Dec
CWL10:20Cardiff Wales
19h 34m
2 stops
SEA21:54Seattle/Tacoma Intl
28 Dec
SEA06:00Seattle/Tacoma Intl
19h 50m
2 stops
CWL09:50Cardiff Wales
£761
Virgin Atlantic
19 Dec
CWL17:30Cardiff Wales
26h 20m
1 stop
SEA11:50Seattle/Tacoma Intl
26 Dec
SEA19:56Seattle/Tacoma Intl
29h 54m
2 stops
CWL09:50Cardiff Wales
£797

KLM flights from Cardiff to Seattle

Our best KLM deals on Cardiff to Seattle flight tickets
KLM
21 Dec
CWL17:30Cardiff Wales
26h 20m
1 stop
SEA11:50Seattle/Tacoma Intl
28 Dec
SEA10:35Seattle/Tacoma Intl
15h 10m
2 stops
CWL09:45Cardiff Wales
£741
KLM
19 Dec
CWL17:30Cardiff Wales
29h 45m
2 stops
SEA15:15Seattle/Tacoma Intl
26 Dec
SEA07:20Seattle/Tacoma Intl
18h 30m
2 stops
CWL09:50Cardiff Wales
£1,020

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Mon 21/12

17:30-11:50

1 stop26h 20m

Seattle/Tacoma Intl

Mon 28/12

10:35-09:45

2 stops15h 10m

£741
Fastest return journey

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Mon 21/12

10:20-21:54

2 stops19h 34m

Seattle/Tacoma Intl

Mon 28/12

06:00-09:50

2 stops19h 50m

£761

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Sat 19/12

17:30-11:50

1 stop26h 20m

Seattle/Tacoma Intl

Sat 26/12

14:35-17:00

1 stop18h 25m

£790

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Sat 19/12

17:30-11:50

1 stop26h 20m

Seattle/Tacoma Intl

Sat 26/12

19:56-09:50

2 stops29h 54m

£797

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Sat 19/12

17:30-15:15

2 stops29h 45m

Seattle/Tacoma Intl

Sat 26/12

07:20-09:50

2 stops18h 30m

£1,020

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Mon 21/12

10:20-11:25

3 stops33h 05m

Seattle/Tacoma Intl

Mon 28/12

18:45-21:40

2 stops18h 55m

£1,177

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Mon 21/12

17:30-17:00

3 stops31h 30m

Seattle/Tacoma Intl

Mon 28/12

14:35-21:40

3 stops23h 05m

£1,262

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Sat 19/12

08:15-22:53

3 stops22h 38m

Seattle/Tacoma Intl

Sat 26/12

07:45-13:55

2 stops22h 10m

£1,393

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Sat 19/12

08:15-22:53

3 stops22h 38m

Seattle/Tacoma Intl

Sat 26/12

13:50-09:50

3 stops36h 00m

£1,592
Cheapest one-way

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Sat 20/3

17:30-22:02

2 stops35h 32m

£479

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 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

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

KLM is the most popular carrier operating from Cardiff Wales to Seattle/Tacoma Intl

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

£479

Direct flights

None
The best one-way flight to Seattle from Cardiff in the past 72 hours is £479. The best return flight deal from Cardiff to Seattle found on momondo in the last 72 hours is £741.
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
Redmond
Kirkland
Leavenworth
Fife
SeaTac
Ashford
Tacoma
Kent
Tukwila

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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