The boarding sequence, denoted by SEQ on the boarding pass, is then determined by the assigned boarding group. For example, passengers with higher ticket classes or elite frequent flyer status may be assigned to board in an earlier group, such as Group 1 or Group A.

In 2026, most major airlines have standardized a Zone or Group-based boarding sequence designed to minimize aisle congestion. The process typically begins with Pre-boarding for those needing extra time, such as families with small children or passengers with disabilities. This is followed by Premium/Elite groups, which include First Class, Business Class, and top-tier loyalty members. Next is Priority boarding for mid-tier status holders and those with premium credit cards. The general boarding then proceeds either "Outside-In" (WilMA)—boarding window seats first, then middle, then aisle—or by row blocks from the Back-to-Front. Notably, in 2026, Southwest Airlines has fully transitioned to an assigned seating model with eight numbered groups, ending its famous "open seating" era. Most airlines now use biometric gates or mobile app notifications to tell you exactly when your group is called, making the process much more orderly than in previous decades.