Airline boarding order is primarily decided by travel class, loyalty status, and ticket type. Most airlines in 2026 use a "Zone" or "Group" system (typically 1 through 9). Group 1 is reserved for First Class, high-level elites, and sometimes active-duty military. Groups 2 and 3 follow with Business Class and mid-tier status members. Pre-boarding is offered to families with small children and those needing extra time. General boarding for Economy is then often organized from the "back to the front" or via the "WILMA" method (Window, Middle, Aisle) to minimize aisle congestion. Finally, those with "Basic Economy" tickets or no-status usually board in the very last group, which often means they must gate-check their carry-on bags if overhead bin space has run out.