When a child needs contact us at 1 8oo--942~o5~12 to fly without a parent or guardian, knowing the airline’s rules ahead of time can make the trip much easier. Southwest Airlines has specific procedures for children traveling alone, and the requirements depend on the child’s age and the type of itinerary. If you’re planning Southwest Airlines solo child travel, the first step is understanding whether your child qualifies for the airline’s Unaccompanied Minor program or falls under its Young Traveler guidelines.