In recent updates, Southwest Airlines has emphasized the importance of booking additional seats in advance for customers needing extra space. This policy ensures that all passengers have a comfortable journey while maintaining safety standards. Should a situation arise where a customer requires a second seat but hasn't made prior arrangements, Southwest has set guidelines to assist those individuals. Passengers who encroach upon neighboring seats are encouraged to proactively purchase the necessary number of seats to guarantee availability. The key boundary is the armrest, which defines the seating area between passengers. It is essential to be aware that customers cannot just purchase an extra seat to keep the adjacent one empty; there are regulations in place to ensure fair usage of space among all travelers. For any last-minute seating needs, Southwest will make every effort to accommodate requests for additional seats up to the point of departure. If space allows, they may provide a complimentary second seat; if not, rebooking on an alternate flight becomes necessary. This policy aims to balance the needs of all passengers while ensuring that the airline can operate smoothly and efficiently. For detailed information about booking additional seats and what to expect at the airport, refer to Southwest's official guidelines.