This chapter contains sections titled: Function of Airport Passenger Terminal Terminal User Facilities Required at Passenger Terminal Passenger and Baggage Flow Security Considerations in Passenger Terminal Design and Layout Terminal Design Concepts Vertical Distribution of Activities Passenger Behavior in Terminal Importance of Passenger Terminal Expenditures Space Requirements for Individual Facilities Baggage Handling Terminals for Low-Cost Carriers Expandability, Modularity, and Flexibility Number of Aircraft Gates Parking Configurations and Apron Layout Apron Facilities and Requirements References