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Cheap flights from Cardiff to Seattle from £520

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Find the cheapest flights from Cardiff to Seattle

Cheap return flights

These are some of the best return flight deals from Cardiff to Seattle 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 Cardiff to Seattle.

Cheap last-minute flights

Planning a quick getaway from Cardiff to Seattle? 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 Seattle, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from Cardiff to Seattle

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

All round-trip flight deals to Seattle

The cheapest plane tickets to Seattle found on KAYAK recently.
CWL-SEA
4709 mimulti-stop
SEA-CWL
4709 mimulti-stop
Multiple Airlines
Find Deal
CWL-SEA
4709 mimulti-stop
Multiple Airlines
Find Deal

How to get the cheapest flight ticket from Cardiff to Seattle

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 month to fly from Cardiff to Seattle?

January. The cheapest time of year to fly to Seattle from Cardiff is January. The most expensive is September.

What is the cheapest day to depart Cardiff for Seattle?

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

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

In the morning. Cardiff to Seattle flights are approximately 5% more expensive in the afternoon than in the morning

What is the cheapest airline that flies to Seattle from Cardiff?

KLM. KLM is the most popular carrier operating from Cardiff to Seattle

When to book flights from Cardiff to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Cardiff to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Cardiff to Seattle (CWL to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cardiff to Seattle

Direct flights

None
There are no direct flights from Cardiff to Seattle. There are no popular flight routes from Cardiff to Seattle.

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

    There are 4700.6 mi between Cardiff Wales and Seattle/Tacoma Intl.

  • When did momondo last update prices for flights from Cardiff Wales Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Cardiff Wales Airport to Seattle/Tacoma Intl Airport refresh daily.

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

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl 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 Cardiff to Seattle?


Best airlines flying from Cardiff to Seattle

Compare and see reviews for airlines that fly from Cardiff to Seattle with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom £521Free CancellationRating
7.8
1,350 reviews
Search KLM flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Cardiff to Seattle for you.

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

All flight searches from Cardiff to Seattle on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Cardiff to Seattle?

Once all potential Cardiff to Seattle 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 Cardiff to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Cardiff to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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