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Cheap flights from Seattle to Cardiff from £801

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.
Multiple Airlines Logo
19:10 - 06:55SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
27h 45m1 stop Dublin
Multiple Airlines Logo
22:50 - 19:00CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
28h 10m2 stops Dublin London Heathrow
£801Multiple Airlines
Thu, 15 Oct - Thu, 22 Oct
KLM Logo
17:45 - 16:45SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
15h 00m1 stop Amsterdam Schiphol
KLM Logo
09:45 - 16:35CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
14h 50m1 stop Amsterdam Schiphol
£855KLM
Thu, 15 Oct - Thu, 22 Oct
KLM Logo
13:42 - 16:45SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
19h 03m2 stops Minneapolis St Paul Amsterdam Schiphol
KLM Logo
09:45 - 23:04CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
21h 19m2 stops Amsterdam Schiphol New York John F Kennedy Intl
£865KLM
Thu, 15 Oct - Thu, 22 Oct
Multiple Airlines Logo
10:50 - 22:20SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
27h 30m3 stops Vancouver Intl Toronto Pearson Intl Dublin
Multiple Airlines Logo
12:00 - 11:35CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
55h 35m2 stops Belfast City London Heathrow
£1,027Multiple Airlines
Thu, 15 Oct - Thu, 22 Oct
Multiple Airlines Logo
20:20 - 11:30SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
31h 10m2 stops London Heathrow Belfast City
Multiple Airlines Logo
12:00 - 11:35CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
31h 35m2 stops Belfast City London Heathrow
£6,476Multiple Airlines
Sun, 27 Sep - Sun, 4 Oct
Multiple Airlines Logo
20:20 - 11:30SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
31h 10m2 stops London Heathrow Belfast City
Multiple Airlines Logo
12:00 - 11:35CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
31h 35m2 stops Belfast City London Heathrow
£6,526Multiple Airlines
Sat, 26 Sep - Sun, 4 Oct
Multiple Airlines Logo
18:55 - 09:15SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
30h 20m2 stops Portland Amsterdam Schiphol
Multiple Airlines Logo
09:50 - 11:52CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
34h 02m1 stop Amsterdam Schiphol
£7,032Multiple Airlines
Sun, 27 Sep - Sun, 4 Oct
KLM Logo
13:30 - 17:05SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
19h 35m2 stops Vancouver Intl Amsterdam Schiphol
KLM Logo
09:50 - 23:20CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
21h 30m2 stops Amsterdam Schiphol New York John F Kennedy Intl
£7,113KLM
Fri, 25 Sep - Sun, 4 Oct
Delta Logo
17:45 - 16:45SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
15h 00m1 stop Amsterdam Schiphol
Delta Logo
09:50 - 16:35CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
14h 45m1 stop Amsterdam Schiphol
£7,179Delta
Tue, 29 Sep - Sun, 4 Oct
Air Europa Logo
18:55 - 16:45SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
37h 50m2 stops Portland Amsterdam Schiphol
Air Europa Logo
09:50 - 16:35CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
14h 45m1 stop Amsterdam Schiphol
£7,272Air Europa
Sat, 26 Sep - Sun, 4 Oct

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KLM flights from Seattle to Cardiff

Our best KLM deals on Seattle to Cardiff flight tickets
KLM
15 Oct
SEA17:45Seattle/Tacoma Intl
15h 00m
1 stop
CWL16:45Cardiff Wales
22 Oct
CWL09:45Cardiff Wales
14h 50m
1 stop
SEA16:35Seattle/Tacoma Intl
£855
KLM
15 Oct
SEA13:42Seattle/Tacoma Intl
19h 03m
2 stops
CWL16:45Cardiff Wales
22 Oct
CWL09:45Cardiff Wales
21h 19m
2 stops
SEA23:04Seattle/Tacoma Intl
£865
KLM
5 Sept
SEA08:59Seattle/Tacoma Intl
16h 16m
2 stops
CWL09:15Cardiff Wales
12 Sept
CWL09:45Cardiff Wales
14h 50m
1 stop
SEA16:35Seattle/Tacoma Intl
£1,084

Delta flights from Seattle to Cardiff

Our best Delta deals on Seattle to Cardiff flight tickets
Delta
5 Sept
SEA07:15Seattle/Tacoma Intl
18h 00m
2 stops
CWL09:15Cardiff Wales
12 Sept
CWL09:45Cardiff Wales
20h 18m
2 stops
SEA22:03Seattle/Tacoma Intl
£969
Delta
5 Sept
SEA07:15Seattle/Tacoma Intl
18h 00m
2 stops
CWL09:15Cardiff Wales
12 Sept
CWL09:45Cardiff Wales
14h 50m
1 stop
SEA16:35Seattle/Tacoma Intl
£1,084
Delta
29 Sept
SEA17:45Seattle/Tacoma Intl
15h 00m
1 stop
CWL16:45Cardiff Wales
4 Oct
CWL09:50Cardiff Wales
14h 45m
1 stop
SEA16:35Seattle/Tacoma Intl
£7,179

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

Thu 15/10

19:10-06:55

1 stop27h 45m

Cardiff Wales

Thu 22/10

22:50-19:00

2 stops28h 10m

£801

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Thu 15/10

17:45-16:45

1 stop15h 00m

Cardiff Wales

Thu 22/10

09:45-16:35

1 stop14h 50m

£855

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Thu 15/10

13:42-16:45

2 stops19h 03m

Cardiff Wales

Thu 22/10

09:45-23:04

2 stops21h 19m

£865

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Thu 15/10

10:50-22:20

3 stops27h 30m

Cardiff Wales

Thu 22/10

12:00-11:35

2 stops55h 35m

£1,027

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Sun 27/9

20:20-11:30

2 stops31h 10m

Cardiff Wales

Sun 4/10

12:00-11:35

2 stops31h 35m

£6,476

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Sat 26/9

20:20-11:30

2 stops31h 10m

Cardiff Wales

Sun 4/10

12:00-11:35

2 stops31h 35m

£6,526

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Sun 27/9

18:55-09:15

2 stops30h 20m

Cardiff Wales

Sun 4/10

09:50-11:52

1 stop34h 02m

£7,032

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Fri 25/9

13:30-17:05

2 stops19h 35m

Cardiff Wales

Sun 4/10

09:50-23:20

2 stops21h 30m

£7,113
Fastest return journey

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Tue 29/9

17:45-16:45

1 stop15h 00m

Cardiff Wales

Sun 4/10

09:50-16:35

1 stop14h 45m

£7,179

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Sat 26/9

18:55-16:45

2 stops37h 50m

Cardiff Wales

Sun 4/10

09:50-16:35

1 stop14h 45m

£7,272

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 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?

Delta is the most popular carrier 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

£1,725

Fastest flight time

16h 16m

Direct flights

None
The best one-way flight to Cardiff from Seattle in the past 72 hours is £1,725. The best return flight deal from Seattle to Cardiff found on momondo in the last 72 hours is £801.
The fastest flight from Seattle to Cardiff takes 16h 16m
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 16h 16m 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