A child travel consent form allows a minor to travel alone or with another person or group. 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. While it's recommended to have notarised written consent, it's definitely not required and in my experience you're highly unlikely to be asked for it. Use our Child Travel Consent form to prove that a child can travel without their parents or guardians. It's just a freeform letter that says your children have permission to travel with their other parent. 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. A Child Travel Consent Form is required where a minor child under the age of 18 is traveling internationally without both parents present. Does anyone know where I can find a form to authorize travel for my grandson cruising with me, and not with his parents? A notarized letter of consent is a crucial requirement when traveling with minors without both parents or guardians.