How do I write a consent letter for my child to travel? This file provides detailed information about the Child Travel Consent Form, including who needs it and how to fill it out.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. These are the official forms for use in Family Court proceedings. A minor (child) travel consent form shows that a child has permission to travel without both parents or legal guardians.