A display apparatus and a method of operating the same are provided. The display apparatus includes a display; a memory configured to store at least one instruction; and a processor configured to execute the at least one instruction to: generate an integrated channel list, which includes first channel information that corresponds to an external image providing apparatus connected to the display apparatus and second channel information that corresponds to an application installed in the display apparatus. The first channel information includes information about channels provided by an external image providing apparatus and the second channel information includes information about channels which are provided by an application. In response to an input of selecting one channel from the integrated channel list, the display apparatus controls a source corresponding to the selected channel to provide content obtained from the controlled source.