A child travel consent form is strongly recommended if a child travels alone, with only one parent or an authorized adult. If a minor child is traveling outside the United States with someone other than either legal parent, BOTH legal parents should sign this form.A child travel consent form allows a minor to travel alone or with another person or group. If only one parent is traveling with the child fill out subsection iii. Enter the traveling parent's name, passport number, country of issue and date issued. If children are not travelling with both their parents, (ie: if they are travelling alone, or with another adult), this form can be used to give permission. A travel consent is used to when traveling with minor children whether on trips with organizations, family members, or one parent. Parents may have joint custody even if the child resides with only one parent. It's required when a child is traveling alone, with just one parent, or with someone who isn't their guardian, whether domestically or internationally. A simple notarized statement, such as the one below, should suffince in most cases.