Southwest Airlines Overhauls Extra Seat Policy, Targets 2025 Compliance: The carrier’s revised “Customer of Size” rule now mandates that passengers needing an extra seat must pre-board without a purchased extra ticket, directly impacting operational flow. This shift, effective immediately, aims to streamline boarding but risks passenger friction. Analysts predict smoother turnaround times but see potential for public-facing pushback as the airline tightens its historically flexible stance.