United Airlines has a structured boarding process to ensure efficiency. Pre-boarding is offered to unaccompanied minors, customers with disabilities, active military members, families with children aged 2 and younger, and top-tier loyalty members. Following pre-boarding, Group 1 includes Premier Platinum and Gold members, as well as Star Alliance Gold members. Passengers assigned to United Airlines Boarding Group 5 are typically those seated in aisle seats within the Economy and Economy Plus cabins. This group boards after Groups 3 and 4, which include passengers with window and middle seats, respectively. Basic Economy passengers and those without a group number on their boarding pass are in Group 6, boarding last.