Travel Details: The form specifies the details of the trip, including the destination, dates of travel, and the purpose of the trip. 1. Document Header - Begin with a clear and descriptive title, like "Child Travel Consent Form.Use a child (minor) travel consent form to let someone under 18 travel alone or with someone other than their legal caretakers. A simple notarized statement, such as the one below, should suffince in most cases. 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.