Abstract: A seat identification system for passengers in a cabin of a commercial airliner. Four sign components, identified as the aisle, mile, row and seat components, are arranged and positioned throughout the airplane in a configuration that allows the passengers to receive information about their seats when needed. The aisle signage markers direct the passengers down the appropriate aisle which leads to their seat. The interval row markers or mile markers provide a general location of the particular row in the aircraft for the passenger's seats. The individual row markers are preferably located in the passenger service unit modules and in viewing channels in order to allow the markers to be visible from the aisle. The seat markers are located preferably on the headrest on each seat and are the final vindication that the passenger is in the correct seat.