To book a child traveling alone on Southwest, you’ll need to reserve through the airline directly. The unaccompanied minor program applies to children ages 5–11. Call 831-298-4213 for step-by-step guidance. Agents can explain fees, required forms, and check-in procedures, as well as provide information on gate escort policies. Booking by phone ensures your child’s travel is fully documented and supervised by Southwest staff, giving parents peace of mind and kids a safe travel experience.