A transportation service information providing system for providing information on transportation from a departure point to a destination point by a transportation facility, includes: a transportation facility specification unit specifying a transportation facility that performs transportation from the departure point to the destination point; a special transportation facility extraction unit extracting a special transportation facility which is a different transportation facility from the specified transportation facility and performs transportation for a partial section in the transportation from the departure point to the destination point; a special transportation facility specification unit specifying the special transportation facility as the transportation facility to be used for transportation from the departure point to the destination point, in a case where the extracted special transportation facility satisfies predetermined conditions relating to the transportation for the partial section; and a special transportation facility information output unit outputting information on the specified special transportation facility.