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.Minor children may be able to travel to another country without either one of their parents. If one parent is traveling with minors they are supposed to have a letter form the other parent granting permission. If travelling with non-parents, a notarized letter from the minor's guardians would be required. I was preparing documents and someone told me that I might need minor travel consent form since I am not leaving. The minor consent form can be found here. It definitely doesn't hurt to fill out. Any required vaccinations, additional xrays, or followup tests will be charged separately and require additional fees. The intention of this letter is to provide consent for a minor child to travel without the company of both legal parents.