Southwest Airlines Unaccompanied Minor Policy allows children ages 5-11 to travel as unaccompanied minors. They must use the Unaccompanied Minor service and pay an additional fee. The service includes escorting the child through check-in, security, and boarding, as well as ensuring they are released only to an authorized adult at their destination. Children aged 12 and older can travel alone without using the Unaccompanied Minor service. It's essential for guardians to review Southwest's specific guidelines and prepare necessary documentation for a smooth travel experience.