Traveling with a child? Minor travel consent forms are necessary for trips involving divorced co-parents.Consent forms can be downloaded online or obtained from your airline or tour company. A travel consent form letter is required for each traveling child. 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. A Child Travel Consent Form is a legal document that allows a minor child to travel without both parents or legal guardians present. Most people who travel regularly with just one parent do have this consent form. Learn why notarizing a child travel consent form ensures safety, compliance, and peace of mind for parents and guardians. The most common interpretation is that the traveling parent requires a notarized letter something not found in any custody order.