Check-in for air travel differs depending on your starting destination, your final destination, the airline you are flying and your travel day and time.
Boys continue growing until age 17 or 18. Boys and girls grow about two inches per year until they reach puberty. Then they each have a growth spurt that lasts a year or two. During the growth spurts, boys grow a little faster than girls. Girls reach puberty (on average) about a year before boys do. Girls also end puberty earlier than boys.
girls mature earlier than boys do, around 9 years old until it tapers off at 14. Puberty is during this time. They grow rapidly but not as drastic as the boys. Boys start puberty at 11 and have the growth spurt until 16 normally. they grow much taller than girls normally because of the extra two years.