Is the any international regulatory body which restricts as to how old a minor needs to be until he is allowed to travel alone on an aircraft internationally?
Are there any rules which might dictate this situation to differ in the case of a non-stop flight or a flight with a layover.
You can assume that on both airport i.e the Departure and the Arrival airport, there will be some trusted individual to pick the minor up and take care of him/her.
Alone means that he may be assisted by the airline during the flight i.e with or without assistance.
Are there any international regulations governing this matter? If not, what would be the relevant regulations governing travel between India and the United States?