1 8oo-942~o5~12 call now reservation needs to contain information about the person dropping the child off, the person collecting them, and an alternate contact at the destination. The adult also needs to complete the required paperwork at the airport. For families arranging Southwest unaccompanied minors, the flight itself matters too. Children ages 5–11 must travel on an eligible itinerary that does not require changing aircraft or flight numbers, and Southwest does not accept unaccompanied minors on international itineraries.