A wireless device includes a detecting unit, a sending unit, and a selecting unit. The detecting unit detects, for each communication channel while switching multiple communication channels, interference information. The sending unit sends to a destination wireless device, a packet in which the detected interference information are sequentially stored for each wireless device. The selecting unit receives the packet. When the wireless device does not correspond to the destination wireless device, the selecting unit transfers the packet. When the wireless device corresponds to the destination wireless device, the selecting unit selects, on the basis of the pieces of the interference information that are sequentially stored in the packet and the detected interference information, a communication channel.