It is an object of the present invention to provide an information providing system and an information providing method capable of providing information with high reliability, and provide an information equipment capable of transmitting information which contributes to the information to be provided by the information providing system, to the information providing system. The information providing system of the present invention includes a processor to execute a program and a memory to store the program. The program, when executed by the processor, performs processes of acquiring facility use information and service providing information, checking the facility use information with the service providing information, and updating availability information indicating an availability state of the facility on the basis of a check result obtained in the checking. The checking includes checking the facility use information with the service providing information on a one-to-one basis.