A communication device is provided, which includes a controller configured to select a first bandwidth, calculates a first communication time for transmitting data using the first bandwidth, to sum one or more periods of a first charging unit time for the first bandwidth to calculate a second communication time that is equal to or longer than the first communication time and closest to the first communication time, to calculate a data amount of a terminal data section to be transmitted within a last period of the first charging unit time, and to select a second bandwidth for transmitting the terminal data section at a lowest communication fee within a second charging unit time for the second bandwidth, the controller controlling a communication unit to transmit data other than the terminal data section using the first bandwidth and transmit the terminal data section using the second bandwidth.