A control method executed by a system including a plurality of unmanned aerial vehicles (1a-1c) and a plurality of take-off and landing facilities (2a-2d) for an unmanned aerial vehicle, including: a first determination step of determining a target position (Pt), wherein a midpoint between positions of each of the plurality of take-off and landing facilities (2a-2d), or a gravity center of an n-polygon, wherein n is an integer of 3 or more, formed on the basis of the positions of the plurality of take-off and landing facilities (2a-2d), is determined as the target position (Pt), to which a first unmanned aerial vehicle among the plurality of unmanned aerial vehicles (1a-1c) is headed on the basis of a position of each of the plurality of take-off and landing facilities (2a-2d); a first control step of controlling the first unmanned aerial vehicle to fly toward the target position (Pt); a first setting step of setting an area (Ar) including the positions of the plurality of take-off and landing facilities (2a-2d) in the area (Ar) centered on the target position (Pt), wherein the area (Ar) is determined on the basis of the distance between the target position (Pt) and the position of the take-off and landing facility among the plurality of take-off and landing facilities (2a-2d) farthest away from the target position (Pt); a second determination step of determining, while the first unmanned aerial vehicle is flying toward the target position (Pt), a take-off and landing facility to be used for landing by the first unmanned aerial vehicle among the plurality of take-off and landing facilities (2a-2d) on the basis of a reservation status of each of the plurality of take-off and landing facilities (2a-2d) by a second unmanned aerial vehicle (1b, 1c) different from the first unmanned aerial vehicle among the plurality of unmanned aerial vehicles, wherein, in the second determination step, the take-off and landing facility is determined before the first unmanned aerial vehicle enters the area (Ar) with the target position (Pt) as a reference; and a second control step of controlling the first unmanned aerial vehicle to fly toward the take-off and landing facility determined in the second determination step. a first determination step of determining a target position (Pt), wherein a midpoint between positions of each of the plurality of take-off and landing facilities (2a-2d), or a gravity center of an n-polygon, wherein n is an integer of 3 or more, formed on the basis of the positions of the plurality of take-off and landing facilities (2a-2d), is determined as the target position (Pt), to which a first unmanned aerial vehicle among the plurality of unmanned aerial vehicles (1a-1c) is headed on the basis of a position of each of the plurality of take-off and landing facilities (2a-2d); a first control step of controlling the first unmanned aerial vehicle to fly toward the target position (Pt); a first setting step of setting an area (Ar) including the positions of the plurality of take-off and landing facilities (2a-2d) in the area (Ar) centered on the target position (Pt), wherein the area (Ar) is determined on the basis of the distance between the target position (Pt) and the position of the take-off and landing facility among the plurality of take-off and landing facilities (2a-2d) farthest away from the target position (Pt); a second determination step of determining, while the first unmanned aerial vehicle is flying toward the target position (Pt), a take-off and landing facility to be used for landing by the first unmanned aerial vehicle among the plurality of take-off and landing facilities (2a-2d) on the basis of a reservation status of each of the plurality of take-off and landing facilities (2a-2d) by a second unmanned aerial vehicle (1b, 1c) different from the first unmanned aerial vehicle among the plurality of unmanned aerial vehicles, wherein, in the second determination step, the take-off and landing facility is determined before the first unmanned aerial vehicle enters the area (Ar) with the target position (Pt) as a reference; and a second control step of controlling the first unmanned aerial vehicle to fly toward the take-off and landing facility determined in the second determination step.