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.
How does the onset of the pubertal growth spurt compare in girls and boys? In girls, it occurs about 1 year before it appears in boys. The average age of onset is 9 1/2 years for girls and 10 1/2 years for boys. Although pubertal growth spurts may occur in girls 3 years before it appears in boys on an individual basis, the average difference is 1 year. Usually girls begin their pubertal growth spurt earlier than boys.