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 accept passport applications between 8- pm Monday through Friday at any of our three locations. No appointment is necessary, but it is recommended. The intention of this letter is to provide consent for a minor child to travel without the company of both legal parents. A parent or guardian must complete this form and have it notarized no earlier than 30 days prior to departure.