A display apparatus and a method of operating the same are provided. The display apparatus includes a display; a memory; and a processor configured to execute at least one instruction stored in the memory so as to: receive a channel control input; identify an image providing source of the display apparatus in response to recognizing the channel control input as a pre-designated input; generate a channel scroll user interface (UI) based on channel information corresponding to the image providing source of the display apparatus; and control the display to display the generated channel scroll UI. The channel scroll UI includes a plurality of channel items included in the channel information corresponding to the image providing source, and a current channel indicator indicating a current channel item from among the plurality of channel items, the current channel item corresponding to content currently displayed on the display apparatus.