Wings, lift, and range

In flight, planes use speed to lift the fuselage into the sky. they use speed, and transform it into lift.

the top part of the winglet is submitted to a depressurization, leading less air faster over the wing. the remaining air flows slower on the bottom of the wing. this creates an overpressure, causing the plane to rise.

If the wing has to lift into the air, the wing has a special piece called a flap, which folds over the trailling edge and createsca higher index of lift. So do the slats at the leading edge of the wing. Supersonic planes have a special wing that guides the shockwave better than a conventional airfoil.