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.A consent letter demonstrates that a child has permission to travel outside Canada from every parent or guardian who is not accompanying them on the trip. A travel consent is used to when traveling with minor children whether on trips with organizations, family members, or one parent. Use our Child Travel Consent form to prove that a child can travel without their parents or guardians. The intention of this letter is to provide consent for a minor child to travel without the company of both legal parents. A Child Travel Consent is required to cover all bases and legally allow a minor to travel with one of the parents or with a third party. This form is an authorization letter for foreign travel with a minor.