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.Provide your child's basic information. A child travel consent form allows a minor to travel alone or with another person or group. Minor travel consent form giving partental authorization for child to travel with another person or only one parent. Here are the steps to write one: 1. Document Header - Begin with a clear and descriptive title, like "Child Travel Consent Form." How do I write a consent letter for my child to travel? A notarized letter of consent will be required for children who travel without one or both of their parents or legal guardians. If only one parent is traveling with the child fill out subsection iii.