When is the zoo open? Sarah Judd September 26, 2022 21:05 Updated For Oregon Zoo current admission hours please visit: Admission Hours * 15 minutes after last ticket time, entry to the zoo is not permitted Related articles Do I need to get tickets before I visit? How much does the zoo cost? Can I re-enter the zoo? How does ticketing work? What is your refund policy? Comments 0 comments Please sign in to leave a comment.