(a) Permission to leave the state may be granted for up to 30 days. 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. If you travel alone with your minor(s), you'll need a Travel Permission Letter. The intention of this letter is to provide consent for a minor child to travel without the company of both legal parents. Name (First, Middle, Last):. I request the orders set out on attached form FL-312. 5. Travel with children. The. Petitioner. Respondent. Traveling For International Students Riverside is a city in Riverside County, California, United States. It is part of the Greater Los Angeles area.