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.

£579 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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Cheap return flights

Enter your travel dates to find the best prices.

15:10 - 09:50SEA-CWL

34h 40m1 stop

10:20 - 11:50CWL-SEA

33h 30m1 stop

£579Delta

Find Deal

Thu, 22 Jan - Mon, 26 Jan

08:00 - 09:50SEA-CWL

17h 50m2 stops

10:20 - 11:50CWL-SEA

33h 30m1 stop

£582Delta

Find Deal

Thu, 22 Jan - Mon, 26 Jan

06:05 - 09:50SEA-CWL

19h 45m2 stops

10:20 - 21:49CWL-SEA

19h 29m2 stops

£590Delta

Find Deal

Thu, 22 Jan - Mon, 26 Jan

Delta flights from Seattle to Cardiff

Our best Delta deals on Seattle to Cardiff flight tickets

Delta

22 Jan

SEA15:10Seattle/Tacoma Intl

34h 40m

1 stop

CWL09:50Cardiff Wales

26 Jan

CWL10:20Cardiff Wales

33h 30m

1 stop

SEA11:50Seattle/Tacoma Intl

£579

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

£582

Find similar

Delta

22 Jan

SEA06:05Seattle/Tacoma Intl

19h 45m

2 stops

CWL09:50Cardiff Wales

26 Jan

CWL10:20Cardiff Wales

19h 29m

2 stops

SEA21:49Seattle/Tacoma Intl

£590

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Thu 22/1

15:10-09:50

1 stop34h 40m

Cardiff Wales

Mon 26/1

10:20-11:50

1 stop33h 30m

£579

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Thu 22/1

08:00-09:50

2 stops17h 50m

Cardiff Wales

Mon 26/1

10:20-11:50

1 stop33h 30m

£582

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Thu 22/1

06:05-09:50

2 stops19h 45m

Cardiff Wales

Mon 26/1

10:20-21:49

2 stops19h 29m

£590

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 17h 50m 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.