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.
Boys often continue to grow taller and gain weight. The growth spurt in boys tends to start about 2 years after puberty begins and reaches its peak about 1Â½ years later. Also, gender characteristics continue to develop in both girls and boys.