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.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. It is very simple to do. I was preparing documents and someone told me that I might need minor travel consent form since I am not leaving. Minor travel consent form giving partental authorization for child to travel with another person or only one parent. It's just a freeform letter that says your children have permission to travel with their other parent. Every parent will be required to fill out a completely new enrollment form on January 1st (unless their child was registered in December the year prior). Complete the appropriate application provided at this office written neatly in black ink only.