Know what documents a child needs to travel to or from the U.S. All children, including infants, must have their own travel documents. Your child will need a Child Travel Consent any time they're traveling without all their parents or legal guardians present.Does anyone know if a minor child is traveling with a parent (parents divorced, joint legal custody), via plane in the US (US resident flying to We will be sharing some family travel tips about what documentation is needed, such as a travel consent letter, for international travel with a minor. One form is an authorization to travel with the child. If he has his parental rights intact, even if he doesn't have any custodial rights, you need his permission for that until the child is 16.