Sun Valley 2024 Operating Dates Season Ends Sun Valley. Sun valley resort, north america's first destination ski resort, established in 1936, looks forward to welcoming guests back for its 89th winter season which commences on. Check out this list of projected closing dates for ski resorts in idaho to help you.

All passes paid in full have unlimited. These dates are subject to change at sun valley’s discretion based on weather and snowfall.