Definition
In air traffic management, throughput is the number of aircraft that can be moved through a given point, route, airspace sector, or airport in a set period of time. Higher throughput means more aircraft handled per hour without compromising separation or safety.
Plain English
How many aircraft the system can push through a given place in a given amount of time. More throughput means more flights handled per hour.
Context Anchor
Seen in discussions of NextGen, air traffic flow, airport delays, and how new procedures help more aircraft move safely through the system.
Derivation
From English 'through' + 'put' — literally how much can be 'put through' something. Originally an industrial and computing term for how much material or data passes through a system per unit of time. In aviation it carries the same idea: how many aircraft pass through a point or sector per hour.
Why Pilots Care
Higher throughput means fewer delays and better use of existing runways and airspace.
Analogy
Throughput is like the number of cars that can pass safely through a toll plaza in one hour. It is not just about how fast one car moves; it is about how many can move through the whole system safely.
Intuition Check
Do not read throughput as the speed of one aircraft. Here, it means the amount of traffic the aviation system can handle over time.
Example Sentence 1
Performance-based navigation procedures increase runway throughput by allowing more arrivals per hour while maintaining required separation.
Example Sentence 2
Controllers monitor throughput to decide when to open additional arrival routes.