When Is Kings Island Open 2025. Operating dates and times are subject to change without notice. Experience exciting new adventures as kings island introduces the eagerly awaited camp snoopy expansion in the upcoming 2025 season, set to open on april 20.

Your guide with info and tips for visiting kings island amusement park in cincinnati, ohio. 12 end of daily operations, which is the earliest in recent memory (though it will be open weekends through labor day, and again on.