spirit airlines boarding zones function similarly to conventional boarding groups, although they place more emphasis on classifying travelers according to predetermined standards. Spirit has a simplified zone system, in contrast to airlines that could use loyalty programs or frequent flyer status to assign seats or elevate passengers to priority boarding. Families and travelers with premium ticket upgrades, including Big Front Seats, usually occupy the second zone after people with special needs. Depending on when they checked in or bought their tickets, ordinary passengers are summoned to board as the number of zones grows.
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