Priority Boarding: The primary Cardmember and companions traveling on the same reservation are eligible for priority boarding; authorized users are only eligible if they are on the same reservation as the primary Cardmember. To receive priority boarding, the primary Cardmember must include their MileagePlus® number in their reservation. Priority boarding is only available on United- and United Express-operated flights; codeshare partner-operated flights are not eligible. United℠ Explorer Cardmembers can board the plane before general boarding, after MileagePlus Premier® members, customers with Premier Access® and travelers requiring special assistance. Chase is not responsible for the provision of, or failure to provide, the stated benefits.