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.
The answer. Yes male hair does grow faster than female hair atleast according to the only study I could find on the subject (J Invest Dermatol, 56:5, pp 362-365, 1971). However the difference was not much, only about 6.5% longer on average (or about 0.75mm per month).