Child's Information: The form includes the child's full name, date of birth, place of birth, and passport or identification details. You'll need to fill out an unaccompanied minor form and any necessary Customs and Immigration documents for the day of departure.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. The default rule is typically for both parents to consent to the child's trip abroad. Obtain a consent form: Once the custodial parent agrees to provide consent, you'll need to obtain a consent form. Depending on the custody agreement, one parent may need the other's consent or a court order to travel internationally with their child. This guide includes forms and instructions for a letter and affidavit to request that the court register an out-of-state custody order in Texas. All passengers are required to undergo screening. It contains kids traveling with only one parent, a grandparent, uncle or aunt, a family friend, or any other grown-up who is not their parent or legal guardian.