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.
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.