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.

£267 Cheap Flights from Seattle to Cardiff (SEA-CWL) in 2025

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Find the cheapest flights from Seattle to Cardiff (SEA-CWL)

Round-trip

One-way

Cheap return flights

06:00 - 09:50SEA-CWL

20h 50m2 stops

17:30 - 16:59CWL-SEA

31h 29m2 stops

£805Virgin Atlantic

Find Deal

Fri, 31 Oct - Sun, 9 Nov

14:10 - 09:15SEA-CWL

35h 05m1 stop

17:15 - 16:05CWL-SEA

30h 50m1 stop

£827KLM

Find Deal

Sat, 13 Sep - Fri, 19 Sep

16:00 - 16:55SEA-CWL

17h 55m1 stop

17:30 - 16:59CWL-SEA

31h 29m2 stops

£835Virgin Atlantic

Find Deal

Fri, 31 Oct - Sun, 9 Nov

14:10 - 09:15SEA-CWL

35h 05m1 stop

09:50 - 16:05CWL-SEA

14h 15m1 stop

£888KLM

Find Deal

Sat, 13 Sep - Fri, 19 Sep

07:45 - 09:15SEA-CWL

17h 30m2 stops

17:15 - 16:05CWL-SEA

30h 50m1 stop

£892KLM

Find Deal

Sat, 13 Sep - Fri, 19 Sep

07:45 - 09:15SEA-CWL

17h 30m2 stops

09:50 - 20:16CWL-SEA

18h 26m2 stops

£899

Find Deal

Sat, 13 Sep - Fri, 19 Sep

21:05 - 23:20SEA-CWL

19h 15m1 stop

21:20 - 18:20CWL-SEA

29h 00m1 stop

£999

Find Deal

Fri, 31 Oct - Sun, 9 Nov

15:05 - 09:50SEA-CWL

34h 45m1 stop

17:25 - 11:50CWL-SEA

26h 25m1 stop

£1,173KLM

Find Deal

Sat, 27 Dec - Sat, 3 Jan

15:05 - 09:50SEA-CWL

34h 45m1 stop

17:25 - 16:48CWL-SEA

31h 23m2 stops

£1,180KLM

Find Deal

Sat, 27 Dec - Sat, 3 Jan

06:00 - 09:50SEA-CWL

19h 50m2 stops

17:25 - 16:48CWL-SEA

31h 23m2 stops

£1,269Virgin Atlantic

Find Deal

Sat, 27 Dec - Sat, 3 Jan

Virgin Atlantic flights from Seattle to Cardiff

Our best Virgin Atlantic deals on Seattle to Cardiff flight tickets

Virgin Atlantic

31 Oct

SEA06:00Seattle/Tacoma Intl

20h 50m

2 stops

CWL09:50Cardiff Wales

9 Nov

CWL17:30Cardiff Wales

31h 29m

2 stops

SEA16:59Seattle/Tacoma Intl

£805

Find similar

Virgin Atlantic

31 Oct

SEA16:00Seattle/Tacoma Intl

17h 55m

1 stop

CWL16:55Cardiff Wales

9 Nov

CWL17:30Cardiff Wales

31h 29m

2 stops

SEA16:59Seattle/Tacoma Intl

£835

Find similar

Virgin Atlantic

27 Dec

SEA06:00Seattle/Tacoma Intl

19h 50m

2 stops

CWL09:50Cardiff Wales

3 Jan

CWL17:25Cardiff Wales

31h 23m

2 stops

SEA16:48Seattle/Tacoma Intl

£1,269

Find similar

KLM flights from Seattle to Cardiff

Our best KLM deals on Seattle to Cardiff flight tickets

KLM

13 Sept

SEA14:10Seattle/Tacoma Intl

35h 05m

1 stop

CWL09:15Cardiff Wales

19 Sept

CWL17:15Cardiff Wales

30h 50m

1 stop

SEA16:05Seattle/Tacoma Intl

£827

Find similar

KLM

13 Sept

SEA14:10Seattle/Tacoma Intl

35h 05m

1 stop

CWL09:15Cardiff Wales

19 Sept

CWL09:50Cardiff Wales

14h 15m

1 stop

SEA16:05Seattle/Tacoma Intl

£888

Find similar

KLM

13 Sept

SEA07:45Seattle/Tacoma Intl

17h 30m

2 stops

CWL09:15Cardiff Wales

19 Sept

CWL17:15Cardiff Wales

30h 50m

1 stop

SEA16:05Seattle/Tacoma Intl

£892

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Fri 31/10

06:00-09:50

2 stops20h 50m

Cardiff Wales

Sun 9/11

17:30-16:59

2 stops31h 29m

£805

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sat 13/9

14:10-09:15

1 stop35h 05m

Cardiff Wales

Fri 19/9

17:15-16:05

1 stop30h 50m

£827

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Fri 31/10

16:00-16:55

1 stop17h 55m

Cardiff Wales

Sun 9/11

17:30-16:59

2 stops31h 29m

£835

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sat 13/9

14:10-09:15

1 stop35h 05m

Cardiff Wales

Fri 19/9

09:50-16:05

1 stop14h 15m

£888

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sat 13/9

07:45-09:15

2 stops17h 30m

Cardiff Wales

Fri 19/9

17:15-16:05

1 stop30h 50m

£892

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sat 13/9

07:45-09:15

2 stops17h 30m

Cardiff Wales

Fri 19/9

09:50-20:16

2 stops18h 26m

£899

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Fri 31/10

21:05-23:20

1 stop19h 15m

Cardiff Wales

Sun 9/11

21:20-18:20

1 stop29h 00m

£999

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sat 27/12

15:05-09:50

1 stop34h 45m

Cardiff Wales

Sat 3/1

17:25-11:50

1 stop26h 25m

£1,173

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sat 27/12

15:05-09:50

1 stop34h 45m

Cardiff Wales

Sat 3/1

17:25-16:48

2 stops31h 23m

£1,180

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sat 27/12

06:00-09:50

2 stops19h 50m

Cardiff Wales

Sat 3/1

17:25-16:48

2 stops31h 23m

£1,269

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 resultsSorted 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	£267
Fastest flight time	17h 30m
Direct flights	None
Airports in Cardiff	1 airport

The best one-way flight to Cardiff from Seattle in the past 72 hours is £267. The best return flight deal from Seattle to Cardiff found on momondo in the last 72 hours is £805.

The fastest flight from Seattle to Cardiff takes 17h 30m

There are no direct flights from Seattle to Cardiff. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Cardiff Wales Airport.

There is 1 airport near Cardiff: Cardiff Wales (CWL)

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 17h 30m 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.