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.

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.

£581 Cheap Flights from Seattle to Cardiff in 2025/26

1 adult

0 bags

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Find the cheapest flights from Seattle to Cardiff

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One-way

Cheap return flights

Enter your travel dates to find the best prices.

15:10 - 16:45SEA-CWL

17h 35m1 stop

10:20 - 11:50CWL-SEA

33h 30m1 stop

£581Delta

Find Deal

Thu, 22 Jan - Mon, 26 Jan

07:40 - 09:50SEA-CWL

18h 10m2 stops

10:20 - 11:50CWL-SEA

33h 30m1 stop

£585Delta

Find Deal

Thu, 22 Jan - Mon, 26 Jan

07:15 - 16:45SEA-CWL

25h 30m2 stops

10:20 - 21:49CWL-SEA

19h 29m2 stops

£592Delta

Find Deal

Thu, 22 Jan - Mon, 26 Jan

18:45 - 21:20SEA-CWL

18h 35m1 stop

23:15 - 20:28CWL-SEA

29h 13m2 stops

£693Multiple Airlines

Find Deal

Sat, 2 May - Tue, 19 May

17:35 - 09:15SEA-CWL

31h 40m1 stop

09:50 - 11:35CWL-SEA

33h 45m1 stop

£699Delta

Find Deal

Sun, 3 May - Mon, 18 May

06:05 - 16:45SEA-CWL

26h 40m2 stops

09:50 - 11:35CWL-SEA

33h 45m1 stop

£703Delta

Find Deal

Sun, 3 May - Mon, 18 May

17:35 - 16:45SEA-CWL

15h 10m1 stop

09:50 - 20:24CWL-SEA

18h 34m2 stops

£708Multiple Airlines

Find Deal

Mon, 4 May - Wed, 20 May

16:55 - 16:45SEA-CWL

15h 50m2 stops

09:50 - 20:24CWL-SEA

18h 34m2 stops

£711KLM

Find Deal

Sun, 3 May - Tue, 19 May

18:10 - 16:45SEA-CWL

38h 35m2 stops

09:50 - 15:50CWL-SEA

14h 00m1 stop

£712Delta

Find Deal

Sat, 2 May - Thu, 21 May

18:10 - 16:45SEA-CWL

38h 35m2 stops

09:50 - 20:29CWL-SEA

42h 39m2 stops

£715Delta

Find Deal

Sat, 2 May - Mon, 18 May

Delta flights from Seattle to Cardiff

Our best Delta deals on Seattle to Cardiff flight tickets

Delta

22 Jan

SEA15:10Seattle/Tacoma Intl

17h 35m

1 stop

CWL16:45Cardiff Wales

26 Jan

CWL10:20Cardiff Wales

33h 30m

1 stop

SEA11:50Seattle/Tacoma Intl

£581

Find similar

Delta

22 Jan

SEA15:10Seattle/Tacoma Intl

17h 35m

1 stop

CWL16:45Cardiff Wales

26 Jan

CWL10:20Cardiff Wales

33h 30m

1 stop

SEA11:50Seattle/Tacoma Intl

£581

Find similar

Delta

22 Jan

SEA08:00Seattle/Tacoma Intl

17h 50m

2 stops

CWL09:50Cardiff Wales

26 Jan

CWL10:20Cardiff Wales

33h 30m

1 stop

SEA11:50Seattle/Tacoma Intl

£585

Find similar

KLM flights from Seattle to Cardiff

Our best KLM deals on Seattle to Cardiff flight tickets

KLM

3 May

SEA16:55Seattle/Tacoma Intl

15h 50m

2 stops

CWL16:45Cardiff Wales

21 May

CWL09:50Cardiff Wales

18h 34m

2 stops

SEA20:24Seattle/Tacoma Intl

£711

Find similar

KLM

4 Jan

SEA15:10Seattle/Tacoma Intl

34h 40m

1 stop

CWL09:50Cardiff Wales

11 Jan

CWL10:15Cardiff Wales

20h 10m

2 stops

SEA22:25Seattle/Tacoma Intl

£739

Find similar

KLM

5 May

SEA14:05Seattle/Tacoma Intl

18h 40m

1 stop

CWL16:45Cardiff Wales

22 May

CWL09:50Cardiff Wales

14h 00m

1 stop

SEA15:50Seattle/Tacoma Intl

£764

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Thu 22/1

15:10-16:45

1 stop17h 35m

Cardiff Wales

Mon 26/1

10:20-11:50

1 stop33h 30m

£581

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Thu 22/1

07:40-09:50

2 stops18h 10m

Cardiff Wales

Mon 26/1

10:20-11:50

1 stop33h 30m

£585

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Thu 22/1

07:15-16:45

2 stops25h 30m

Cardiff Wales

Mon 26/1

10:20-21:49

2 stops19h 29m

£592

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sat 2/5

18:45-21:20

1 stop18h 35m

Cardiff Wales

Tue 19/5

23:15-20:28

2 stops29h 13m

£693

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sun 3/5

17:35-09:15

1 stop31h 40m

Cardiff Wales

Mon 18/5

09:50-11:35

1 stop33h 45m

£699

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sun 3/5

06:05-16:45

2 stops26h 40m

Cardiff Wales

Mon 18/5

09:50-11:35

1 stop33h 45m

£703

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Mon 4/5

17:35-16:45

1 stop15h 10m

Cardiff Wales

Wed 20/5

09:50-20:24

2 stops18h 34m

£708

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sun 3/5

16:55-16:45

2 stops15h 50m

Cardiff Wales

Tue 19/5

09:50-20:24

2 stops18h 34m

£711

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sat 2/5

18:10-16:45

2 stops38h 35m

Cardiff Wales

Thu 21/5

09:50-15:50

1 stop14h 00m

£712

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sat 2/5

18:10-16:45

2 stops38h 35m

Cardiff Wales

Mon 18/5

09:50-20:29

2 stops42h 39m

£715

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

Direct flights	None

There are no direct flights from Seattle to Cardiff. There are no popular flight routes from Seattle to Cardiff.

Search flight deals

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 15h 10m 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.

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.

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.