Are you looking for 8 day cruises that leave from Seattle, WA? As of today - April 1, 2025 - there are just 3 such cruise options. These cruise options are offered by two cruise lines - Carnival (just 2 sailings, both of them on Carnival Spirit) and Cunard (just 1 sailing on Queen Elizabeth).
In the following table you can see all 8 day cruises that depart from Seattle sorted by departure date.