HI, My name is ***** ***** I am happy to assist you. The first thing you will need to do is make sure that you arrive to the airport atleast 1 hour prior to a domestic travel flight and 2 hours for an international flights. Make sure that he has a copy of his birth certificate or any identification that has his age on it just incase you run into any questions about the age of the minor. Some children look older than they actually are and could be asked many questions. TSA cares is a service for elderly or medical needs for patients not for minors. The airports have escorts for unaccompanied minors. I have listed the major airports below if one is not the flight you are taking please let me know and I can get you that information for you.
For united : https://www.united.com/web/en-US/content/travel/specialneeds/minors/faq.aspx
For American Airlines : https://www.aa.com/i18n/travelInformation/specialAssistance/unaccompanied-minors.jsp
For Delta : https://pro.delta.com/content/agency/us/en/products-and-services/special-services/unaccompanied-minor--umnr--service.html
For Southwest : https://www.southwest.com/html/customer-service/family/unaccompanied-minors-pol.html
Hi, I was just checking in to see if you still had further questions that I was not able to address. Please let me know if I can be of further service. Have a great week.