Illinois Ski Resort Projected Opening Dates

When will ski resorts in Illinois open for the ski season? The 2025/26 Illinois Ski season starts from 2025/12/06. See this list of projected opening dates for Illinois mountains. Important Note: Not all dates listed here are official and final, as resort opening dates are projected and subject to change. Check back for updates on when the lifts are set to start spinning at Illinois, and don't miss opening day at your favorite resort!