How do I write a consent letter for my child to travel? Know what documents a child needs to travel to or from the U.S. All children, including infants, must have their own travel documents.These are the official forms for use in Family Court proceedings. 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 form allows a minor to travel alone or with another person or group. We will be sharing some family travel tips about what documentation is needed, such as a travel consent letter, for international travel with a minor. Your child will need a Child Travel Consent any time they're traveling without all their parents or legal guardians present. It is determined that the child's disabilities are significant enough to need transport for a shorter journey.