Which Boyne Passport ski resorts are currently open? This list of Boyne Passport ski mountains that are open today is updated daily. In addition to viewing the open Boyne Passport ski resorts, you can sort the list of open mountains by number of lifts open, 24 hour snow totals, base depth and user rating. Toggle over to view a list of Projected Opening Dates and Projected Closing dates for Boyne Passport ski resorts.