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Cheap flights from Seattle to Cardiff from $742

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Cardiff departing on 1/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Seattle to Cardiff

Cheap round-trip flights

These are some of the best round-trip flight deals from Seattle to Cardiff that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Seattle to Cardiff.

Cheap last minute flights

Planning a quick getaway from Seattle to Cardiff? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Cardiff, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Seattle to Cardiff

Find recent round-trip train or bus tickets from Seattle to Cardiff.

All round-trip flight deals to Cardiff

The cheapest plane tickets to Cardiff found on KAYAK recently.
3:15 pm - 4:55 pmSEA-CWL
18h 40m1 stop
5:15 pm - 4:05 pmCWL-SEA
30h 50m1 stop
$809KLM
Find Deal
Tue, Mar 25 - Mon, Mar 31
2:09 pm - 4:55 pmSEA-CWL
18h 46m1 stop
5:25 pm - 11:50 amCWL-SEA
26h 25m1 stop
$852KLM
Find Deal
Thu, Jan 9 - Tue, Jan 14
6:00 am - 9:55 amSEA-CWL
19h 55m2 stops
5:25 pm - 11:50 amCWL-SEA
26h 25m1 stop
$857Virgin Atlantic
Find Deal
Thu, Jan 9 - Tue, Jan 14
6:00 am - 9:55 amSEA-CWL
19h 55m2 stops
10:25 am - 10:25 pmCWL-SEA
20h 00m2 stops
$867Delta
Find Deal
Thu, Jan 9 - Tue, Jan 14
2:14 pm - 4:55 pmSEA-CWL
18h 41m1 stop
10:25 am - 4:40 pmCWL-SEA
38h 15m2 stops
$1,376
Find Deal
Sat, Jan 4 - Sat, Jan 11
2:14 pm - 4:55 pmSEA-CWL
18h 41m1 stop
10:25 am - 11:50 amCWL-SEA
33h 25m1 stop
$1,398
Find Deal
Sat, Jan 4 - Sat, Jan 11
1:45 pm - 12:25 pmSEA-CWL
38h 40m2 stops
12:55 pm - 11:20 amCWL-SEA
30h 25m2 stops
$1,578British Airways
Find Deal
Fri, Jan 3 - Fri, Jan 10
1:45 pm - 12:25 pmSEA-CWL
38h 40m2 stops
12:55 pm - 11:20 amCWL-SEA
30h 25m2 stops
$1,604British Airways
Find Deal
Fri, Jan 3 - Fri, Jan 10
8:30 am - 9:50 amSEA-CWL
17h 20m2 stops
10:20 am - 10:25 pmCWL-SEA
20h 05m2 stops
$2,029Virgin Atlantic
Find Deal
Thu, Dec 19 - Wed, Dec 25
2:13 pm - 4:55 pmSEA-CWL
18h 42m1 stop
10:20 am - 10:25 pmCWL-SEA
20h 05m2 stops
$2,030Delta
Find Deal
Thu, Dec 19 - Wed, Dec 25
2:14 pm - 4:55 pmSEA-CWL
18h 41m1 stop
$742Delta
Find Deal
Fri, Jan 3
6:00 am - 9:50 amSEA-CWL
19h 50m2 stops
$743Virgin Atlantic
Find Deal
Fri, Jan 3

KLM flights from Seattle to Cardiff

Our best KLM deals on Seattle to Cardiff flight tickets
KLM
Mar 25
SEA3:15 pmSeattle/Tacoma Intl
18h 40m
1 stop
CWL4:55 pmCardiff Wales
Mar 31
CWL5:15 pmCardiff Wales
30h 50m
1 stop
SEA4:05 pmSeattle/Tacoma Intl
KLM
Jan 9
SEA2:09 pmSeattle/Tacoma Intl
18h 46m
1 stop
CWL4:55 pmCardiff Wales
Jan 14
CWL5:25 pmCardiff Wales
26h 25m
1 stop
SEA11:50 amSeattle/Tacoma Intl
KLM
May 13
SEA1:30 pmSeattle/Tacoma Intl
19h 15m
1 stop
CWL4:45 pmCardiff Wales
May 19
CWL5:15 pmCardiff Wales
30h 50m
1 stop
SEA4:05 pmSeattle/Tacoma Intl

Virgin Atlantic flights from Seattle to Cardiff

Our best Virgin Atlantic deals on Seattle to Cardiff flight tickets
Virgin Atlantic
Jan 9
SEA6:00 amSeattle/Tacoma Intl
19h 55m
2 stops
CWL9:55 amCardiff Wales
Jan 14
CWL5:25 pmCardiff Wales
26h 25m
1 stop
SEA11:50 amSeattle/Tacoma Intl
Virgin Atlantic
Dec 19
SEA8:30 amSeattle/Tacoma Intl
17h 20m
2 stops
CWL9:50 amCardiff Wales
Dec 25
CWL10:20 amCardiff Wales
20h 05m
2 stops
SEA10:25 pmSeattle/Tacoma Intl

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 day to depart Seattle for Cardiff?

Wednesday. The cheapest day of the week is typically Wednesday. The most expensive is typically Monday

When is the cheapest time to fly from Seattle to Cardiff?

Seattle to Cardiff flights are currently only available in the afternoon

What is the cheapest Seattle to Cardiff flight route?

Seattle/Tacoma Intl - Cardiff Wales. Fly from Seattle/Tacoma Intl to Cardiff Wales for the best Seattle - Cardiff flight prices

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 round-trip 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

$742

Fastest flight time

17h 20m

Direct flights

None

Airports in Cardiff

1 airport
The best one-way flight to Cardiff from Seattle in the past 72 hours is $742. The best round-trip flight deal from Seattle to Cardiff found on momondo in the last 72 hours is $809.
The fastest flight from Seattle to Cardiff takes 17h 20m
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)

  • How far is Seattle/Tacoma Intl to Cardiff Wales by plane?

    The straight-line distance from Seattle/Tacoma Intl to Cardiff Wales is 4700.6 mi. In terms of flight time, this usually takes a little over 17h 20m.

  • 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 many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Cardiff Wales Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Cardiff Wales Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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.

  • What is the most popular airline from Seattle to Cardiff?


Best airlines flying from Seattle to Cardiff

Compare and see reviews for airlines that fly from Seattle to Cardiff with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $721Free CancellationRating
7.8
1,350 reviews
Search KLM flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Cardiff?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Cardiff. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seattle to Cardiff with flexible booking policies on momondo?

momondo does allow users to show only those flights to Cardiff from Seattle which offer a flexible booking policy as well as other useful filters and features.

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?

If you are simply researching potential flights to Cardiff, momondo offers a useful price alert feature which will track prices for flights to Cardiff from Seattle and alert you when they change.


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