An airplane wing works because of the lift it creates. If you look at a cross section of an airplane wing you will see it it is curved on the top side and flat on the bottom. When air travels over the wing it moves faster over the top of the wing than it dose on the bottom of the wing. Lower air pressure exists above the wing than it dose under the wing. Because air wants to move from higher to lower pressure the wing of the airplane wants to travel in an upward direction, this is lift.