This form is often required when a minor child will be traveling to another state or country without both parents being present. 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. Use our Child Travel Consent form to prove that a child can travel without their parents or guardians. A travel consent form letter is required for each traveling child. The intention of this letter is to provide consent for a minor child to travel without the company of both legal parents. There is a lot of debate about whether we need a notarized letter granting permission to travel. Does anyone know for sure? A notarized letter of consent is a crucial requirement when traveling with minors without both parents or guardians. The document is a Letter of Parental Consent for a minor child to travel without both legal parents.