A printing system capable of distinguishing between disconnection of a communication apparatus from a network caused by power-off of the communication apparatus and temporary disconnection of the communication apparatus from the network caused by a change in an operation mode of the communication apparatus. A printing system includes a printing apparatus and a print server. When the printing apparatus has shifted from a first communication mode for performing wireless communication between the printing apparatus and the mobile terminal to a second communication mode for communicating with the print server, the printing apparatus notifies the print server of predetermined information. When the predetermined information is received, the print server transmits a print job spooled therein to the printing apparatus.