Use our Child Travel Consent form to prove that a child can travel without their parents or guardians. This letter ensures the legitimacy of the accompanying parent's legal right to travel with the child.Know what documents a child needs to travel to or from the U.S. All children, including infants, must have their own travel documents. Children younger than 18 (at time of travel) and traveling alone to or from Mexico must have a travel authorization letter. The most important is a notarized letter of consent from the non-traveling parent. The intention of this letter is to provide consent for a minor child to travel without the company of both legal parents. The most common interpretation is that the traveling parent requires a notarized letter something not found in any custody order. A minor travel consent form does not include permission to make medical decisions on behalf of the child. If the child has only one custodial parent, a notarized letter of consent from the nontraveling parent may be necessary. Phoenix launches one of the first Registered Apprenticeship programs in support of booming semiconductor and advanced manufacturing ecosystems.