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.
Before the onset of the teenage growth spurt, boys grow very slightly faster than girls, but a girl's growth spurt starts about two years before that of boys between 12 and 14. For some four years, girls are, on average, taller than boys. But by adulthood, men are on average 14cm taller than women.