Cheap flights from Cardiff to Seattle

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How to find the cheapest flight from
Cardiff (CWL) to Seattle (SEA)

All the information you need to plan the best CWL to SEA flight in 2022: compare Cardiff to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.
What is the cheapest day to fly round-trip from Cardiff to Seattle?

Flights from Cardiff to Seattle are found to be more expensive on Sunday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Seattle.

When is the cheapest time to fly from Cardiff to Seattle (CWL - SEA)?

Unlike in the morning, when flights are generally more expensive, you can save up to 41% on flights from Cardiff to Seattle by exploring options for tickets at midday.

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Cardiff</span> to <span class="emphasized">Seattle</span> flights.

Flight FAQs

From Cardiff to Seattle

How popular is this Cardiff to Seattle flight route?

The Cardiff Wales to Seattle/Tacoma Intl flight path was viewed by 15 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

COVID Restrictions

View COVID Travel Restrictions for Seattle, WA

Do I need a COVID test to fly to Seattle from Cardiff?

Information is based on travel restrictions from Cardiff Wales to Seattle/Tacoma Intl

Most visitors from Cardiff Wales need to provide a negative COVID-19 test result and/or quarantine to enter Seattle/Tacoma Intl.

COVID-19 testing requirements
Visitors from Cardiff Wales are not required to present a negative COVID-19 PCR test or antigen result upon entering Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Cardiff Wales are not required to quarantine after entering Seattle/Tacoma Intl.

Do I need a test to fly back to Cardiff from Seattle?

Returning to Cardiff Wales from Seattle/Tacoma Intl

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl are not required to present a negative COVID-19 PCR test or antigen result upon entering Cardiff Wales.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Cardiff Wales.

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Destination information for Seattle

Things to know before you go - useful duration and weather info for your trip from Cardiff to Seattle.
Today's exchange rate
£1 = $1.22
Average temperature for July in Seattle
25.0 °C
Avg rainfall for July in Seattle
18.0 mm

Airports servicing Cardiff

Airports servicing Seattle

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