A child travel consent form is strongly recommended if a child travels alone, with only one parent or an authorized adult. A child travel consent form allows a minor to travel alone or with another person or group.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. Here are the steps to write one: 1. Document Header - Begin with a clear and descriptive title, like "Child Travel Consent Form." If only one parent is traveling with the child fill out subsection iii. Enter the traveling parent's name, passport number, country of issue and date issued. See what documents a child needs to travel to or from the US alone or with a parent or relative. Non-US citizen children traveling to the US. The most common interpretation is that the traveling parent requires a notarized letter something not found in any custody order.