A Fractional Order Sliding Mode Control (FOSMC) is proposed for improving a quadrotor's flight: take-off, hover, navigation and landing. The control scheme is based on previous works on FOSMC for quadrotors, where a fractional derivative is used to improve the quadrotor's behaviour in presence of uncertainties ans disturbances. A comparison between a Integer Order Sliding Mode Control (IOSMC) scheme and the Fractional Order Sliding Mode Control (FOSMC) scheme is made.