A child travel consent form is strongly recommended if a child travels alone, with only one parent or an authorized adult. If children are not travelling with both their parents, (ie: if they are travelling alone, or with another adult), this form can be used to give permission.1. Document Header - Begin with a clear and descriptive title, like "Child Travel Consent Form. A child travel consent form is a legal document proving that a child has received permission to travel, either alone or with an adult. A Travel Consent Form is a letter of permission for travel is a document where a parent or guardian acknowledges that their minor will be traveling alone. A travel consent is used to when traveling with minor children whether on trips with organizations, family members, or one parent. A child travel consent form allows a minor to travel alone or with another person or group. Our son will be 17 when we travel to Europe in the spring.