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Cheap flights from Seattle to Cardiff from £905

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
07:27 - 09:50SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 23m2 stops Chicago O'Hare Intl Amsterdam Schiphol
KLM Logo
17:30 - 11:50CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
26h 20m1 stop Amsterdam Schiphol
£905KLM
Sat, 28 Nov - Sat, 5 Dec
KLM Logo
07:27 - 09:50SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 23m2 stops Chicago O'Hare Intl Amsterdam Schiphol
KLM Logo
17:30 - 16:44CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
31h 14m2 stops Amsterdam Schiphol San Francisco
£912KLM
Sat, 28 Nov - Sat, 5 Dec
Multiple Airlines Logo
14:35 - 13:55SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
15h 20m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
10:50 - 20:48CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
41h 58m3 stops Granadilla Tenerife-Sur Casablanca Mohamed V Los Angeles
£923Multiple Airlines
Sat, 28 Nov - Sat, 5 Dec
KLM Logo
14:35 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 25m1 stop Amsterdam Schiphol
KLM Logo
10:20 - 22:04CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
19h 44m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County
£1,101KLM
Mon, 30 Nov - Wed, 2 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
£1,110KLM
Mon, 30 Nov - Wed, 2 Dec
KLM Logo
07:27 - 09:45SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 18m2 stops Chicago O'Hare Intl Amsterdam Schiphol
KLM Logo
17:30 - 14:43CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
29h 13m2 stops Amsterdam Schiphol Salt Lake City
£1,122KLM
Mon, 30 Nov - Wed, 2 Dec
Multiple Airlines Logo
15:15 - 08:30SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
33h 15m3 stops Vancouver Intl London Heathrow Belfast City
Multiple Airlines Logo
10:50 - 20:48CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
41h 58m3 stops Granadilla Tenerife-Sur Casablanca Mohamed V Los Angeles
£1,276Multiple Airlines
Sat, 28 Nov - Sat, 5 Dec
Air Europa Logo
14:35 - 17:00SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 25m1 stop Amsterdam Schiphol
Air Europa Logo
10:20 - 11:05CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
32h 45m2 stops Amsterdam Schiphol Boston Logan Intl
£1,347Air Europa
Wed, 23 Dec - Wed, 30 Dec
Air Europa Logo
06:00 - 09:45SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
19h 45m2 stops Minneapolis St Paul Amsterdam Schiphol
Air Europa Logo
10:20 - 11:05CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
32h 45m2 stops Amsterdam Schiphol Boston Logan Intl
£1,409Air Europa
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
£1,626KLM
Sat, 28 Nov - Sat, 5 Dec

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KLM flights from Seattle to Cardiff

Our best KLM deals on Seattle to Cardiff flight tickets
KLM
28 Nov
SEA07:27Seattle/Tacoma Intl
18h 23m
2 stops
CWL09:50Cardiff Wales
5 Dec
CWL17:30Cardiff Wales
26h 20m
1 stop
SEA11:50Seattle/Tacoma Intl
£905
KLM
28 Nov
SEA07:27Seattle/Tacoma Intl
18h 23m
2 stops
CWL09:50Cardiff Wales
5 Dec
CWL17:30Cardiff Wales
31h 14m
2 stops
SEA16:44Seattle/Tacoma Intl
£912
KLM
30 Nov
SEA14:35Seattle/Tacoma Intl
18h 25m
1 stop
CWL17:00Cardiff Wales
2 Dec
CWL10:20Cardiff Wales
19h 44m
2 stops
SEA22:04Seattle/Tacoma Intl
£1,101

Air Europa flights from Seattle to Cardiff

Our best Air Europa deals on Seattle to Cardiff flight tickets
Air Europa
23 Dec
SEA14:35Seattle/Tacoma Intl
18h 25m
1 stop
CWL17:00Cardiff Wales
30 Dec
CWL10:20Cardiff Wales
32h 45m
2 stops
SEA11:05Seattle/Tacoma Intl
£1,347
Air Europa
23 Dec
SEA06:00Seattle/Tacoma Intl
19h 45m
2 stops
CWL09:45Cardiff Wales
30 Dec
CWL10:20Cardiff Wales
32h 45m
2 stops
SEA11:05Seattle/Tacoma Intl
£1,409

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

Sat 28/11

07:27-09:50

2 stops18h 23m

Cardiff Wales

Sat 5/12

17:30-11:50

1 stop26h 20m

£905

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Sat 28/11

07:27-09:50

2 stops18h 23m

Cardiff Wales

Sat 5/12

17:30-16:44

2 stops31h 14m

£912

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Sat 28/11

14:35-13:55

2 stops15h 20m

Cardiff Wales

Sat 5/12

10:50-20:48

3 stops41h 58m

£923
Fastest return journey

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Mon 30/11

14:35-17:00

1 stop18h 25m

Cardiff Wales

Wed 2/12

10:20-22:04

2 stops19h 44m

£1,101

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Mon 30/11

14:35-17:00

1 stop18h 25m

Cardiff Wales

Wed 2/12

17:30-11:50

1 stop26h 20m

£1,110

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Mon 30/11

07:27-09:45

2 stops18h 18m

Cardiff Wales

Wed 2/12

17:30-14:43

2 stops29h 13m

£1,122

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Sat 28/11

15:15-08:30

3 stops33h 15m

Cardiff Wales

Sat 5/12

10:50-20:48

3 stops41h 58m

£1,276

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

10:20-11:05

2 stops32h 45m

£1,347

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Wed 23/12

06:00-09:45

2 stops19h 45m

Cardiff Wales

Wed 30/12

10:20-11:05

2 stops32h 45m

£1,409

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Sat 28/11

14:35-17:00

1 stop18h 25m

Cardiff Wales

Sat 5/12

17:30-11:50

1 stop26h 20m

£1,626

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

£905

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 £905
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