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Cheap flights from Seattle to Cardiff from £764

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 - 07:20SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
28h 10m1 stop Dublin
Multiple Airlines Logo
23:50 - 19:00CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
27h 10m2 stops Dublin London Heathrow
£764Multiple Airlines
Wed, 30 Sep - Wed, 7 Oct
Multiple Airlines Logo
19:10 - 22:20SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
19h 10m1 stop Dublin
Multiple Airlines Logo
22:50 - 18:45CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
27h 55m2 stops Dublin Calgary
£792Multiple Airlines
Thu, 1 Oct - Thu, 8 Oct
Multiple Airlines Logo
14:10 - 22:25SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
24h 15m2 stops Frankfurt am Main Dublin
Multiple Airlines Logo
23:50 - 12:20CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
20h 30m2 stops Dublin Frankfurt am Main
£806Multiple Airlines
Wed, 30 Sep - Wed, 7 Oct
Delta Logo
13:50 - 16:45SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 55m1 stop Amsterdam Schiphol
Delta Logo
09:45 - 16:35CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
14h 50m1 stop Amsterdam Schiphol
£816Delta
Wed, 30 Sep - Wed, 7 Oct
Multiple Airlines Logo
19:00 - 11:30SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
32h 30m3 stops Reykjavik Keflavik Intl Edinburgh Turnhouse Belfast City
Multiple Airlines Logo
11:35 - 22:47CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
43h 12m3 stops Toronto Pearson Intl Regina Vancouver Intl
£851Multiple Airlines
Sat, 5 Sep - Sat, 12 Sep
WestJet Logo
19:35 - 10:15SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
30h 40m2 stops Calgary Toronto Pearson Intl
WestJet Logo
11:35 - 09:40CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
30h 05m2 stops Toronto Pearson Intl Calgary
£852WestJet
Sat, 5 Sep - Sat, 12 Sep
WestJet Logo
19:35 - 10:15SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
30h 40m2 stops Calgary Toronto Pearson Intl
WestJet Logo
11:35 - 09:40CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
30h 05m3 stops Toronto Pearson Intl Edmonton Calgary
£855WestJet
Sat, 5 Sep - Sat, 12 Sep
Multiple Airlines Logo
19:10 - 21:20SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
18h 10m1 stop Dublin
Multiple Airlines Logo
11:35 - 09:40CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
30h 05m2 stops Toronto Pearson Intl Calgary
£858Multiple Airlines
Sat, 5 Sep - Sat, 12 Sep
Delta Logo
17:45 - 17:05SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
15h 20m1 stop Amsterdam Schiphol
Delta Logo
09:45 - 22:49CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
21h 04m2 stops Amsterdam Schiphol Boston Logan Intl
£861Delta
Fri, 2 Oct - Fri, 9 Oct
Delta Logo
11:22 - 17:05SEA  Seattle/Tacoma Intl-CWL Cardiff Wales
21h 43m2 stops Salt Lake City Amsterdam Schiphol
Delta Logo
09:45 - 23:59CWL  Cardiff Wales-SEA Seattle/Tacoma Intl
22h 14m2 stops Amsterdam Schiphol Minneapolis St Paul
£864Delta
Fri, 2 Oct - Fri, 9 Oct

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Delta flights from Seattle to Cardiff

Our best Delta deals on Seattle to Cardiff flight tickets
Delta
30 Sept
SEA13:50Seattle/Tacoma Intl
18h 55m
1 stop
CWL16:45Cardiff Wales
7 Oct
CWL09:45Cardiff Wales
14h 50m
1 stop
SEA16:35Seattle/Tacoma Intl
£816
Delta
2 Oct
SEA17:45Seattle/Tacoma Intl
15h 20m
1 stop
CWL17:05Cardiff Wales
9 Oct
CWL09:45Cardiff Wales
21h 04m
2 stops
SEA22:49Seattle/Tacoma Intl
£861
Delta
2 Oct
SEA11:22Seattle/Tacoma Intl
21h 43m
2 stops
CWL17:05Cardiff Wales
9 Oct
CWL09:45Cardiff Wales
22h 14m
2 stops
SEA23:59Seattle/Tacoma Intl
£864

KLM flights from Seattle to Cardiff

Our best KLM deals on Seattle to Cardiff flight tickets
KLM
2 Oct
SEA17:45Seattle/Tacoma Intl
15h 20m
1 stop
CWL17:05Cardiff Wales
9 Oct
CWL09:45Cardiff Wales
14h 50m
1 stop
SEA16:35Seattle/Tacoma Intl
£926
KLM
5 Sept
SEA13:50Seattle/Tacoma Intl
18h 55m
1 stop
CWL16:45Cardiff Wales
12 Sept
CWL09:45Cardiff Wales
14h 50m
1 stop
SEA16:35Seattle/Tacoma Intl
£1,274
KLM
5 Sept
SEA13:50Seattle/Tacoma Intl
18h 55m
1 stop
CWL16:45Cardiff Wales
12 Sept
CWL09:45Cardiff Wales
14h 50m
1 stop
SEA16:35Seattle/Tacoma Intl
£1,291

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 30/9

19:10-07:20

1 stop28h 10m

Cardiff Wales

Wed 7/10

23:50-19:00

2 stops27h 10m

£764

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Thu 1/10

19:10-22:20

1 stop19h 10m

Cardiff Wales

Thu 8/10

22:50-18:45

2 stops27h 55m

£792

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Wed 30/9

14:10-22:25

2 stops24h 15m

Cardiff Wales

Wed 7/10

23:50-12:20

2 stops20h 30m

£806
Fastest return journey

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Wed 30/9

13:50-16:45

1 stop18h 55m

Cardiff Wales

Wed 7/10

09:45-16:35

1 stop14h 50m

£816

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Sat 5/9

19:00-11:30

3 stops32h 30m

Cardiff Wales

Sat 12/9

11:35-22:47

3 stops43h 12m

£851

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Sat 5/9

19:35-10:15

2 stops30h 40m

Cardiff Wales

Sat 12/9

11:35-09:40

2 stops30h 05m

£852

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Sat 5/9

19:35-10:15

2 stops30h 40m

Cardiff Wales

Sat 12/9

11:35-09:40

3 stops30h 05m

£855

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Sat 5/9

19:10-21:20

1 stop18h 10m

Cardiff Wales

Sat 12/9

11:35-09:40

2 stops30h 05m

£858

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Fri 2/10

17:45-17:05

1 stop15h 20m

Cardiff Wales

Fri 9/10

09:45-22:49

2 stops21h 04m

£861

SeattleCardiff

SEA Seattle/Tacoma Intl - CWL Cardiff Wales

SEACWL

Seattle/Tacoma Intl

Fri 2/10

11:22-17:05

2 stops21h 43m

Cardiff Wales

Fri 9/10

09:45-23:59

2 stops22h 14m

£864

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

£764

Fastest flight time

18h 00m

Direct flights

None
The best flight deal from Seattle to Cardiff found on momondo in the last 72 hours is £764
The fastest flight from Seattle to Cardiff takes 18h 00m
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 00m 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