The present invention relates to an apparatus for searching using multiple displays. The apparatus for searching using multiple displays includes an input part configured to receive an integrated search command signal, a memory in which a program for controlling an integrated search function to be displayed on at least one of an upper display and a lower display according to the integrated search command signal is stored, and a processor configured to execute the program, wherein the processor controls display of an integrated search window for at least one of the lower display disposed in a cockpit and the upper display disposed above the lower display.