Know what documents a child needs to travel to or from the U.S. All children, including infants, must have their own travel documents. Your child will need a Child Travel Consent any time they're traveling without all their parents or legal guardians present.Have questions about travel visas or US passports? We have answers to common questions about US travel documents. Passports for kids who are 15 years or younger are easily obtained with CIBTvisas. We can get a US passport for your child in as little as one business day. The intention of this letter is to provide consent for a minor child to travel without the company of both legal parents. Once issued, a U.S. child's passport is valid for up to five years. This form is required for a minor to travel. It ensures parental consent and details the travel plans.