Finding the age limit for minor flying alone is not easy. But that has some tips to find an age limit for minors, children 2 to 12 years old are considered minors, and kids under 2 years old are infants. Less than two years kids can fly only with their parent’s lap. Moreover, many airlines provide children aged 5 to 12 years old the ability to fly alone, and they offer fare discounts and more. To learn more about flight age limits, visit the Airlinesunaccompaniedminor website.