Are you looking for 1 day cruises that leave from Seattle, WA? As of today - April 2, 2025 - there are just 2 such cruise options. These cruise options are offered by just one cruise line - Holland America (total of 2 sailings, 1 on Eurodam and 1 on Westerdam).
In the following table you can see all 1 day cruises that depart from Seattle sorted by departure date.