Definition
Smaller airports that lie within the airspace or service area of a larger primary airport, and which often share approach control or terminal radar services with that primary airport. Satellite airports typically do not have their own approach control facility; instead, traffic into and out of them is handled by the controllers serving the primary airport.
Plain English
Smaller nearby airports that sit within the same controlled airspace area as a bigger main airport, and whose arriving and departing traffic is usually handled by the main airport's controllers.
Context Anchor
Seen in tower en route control route descriptions, where routes may apply to a main airport area and nearby airports around it.
Derivation
From Latin satelles, meaning 'attendant' or 'companion.' A satellite is something that orbits or operates around a larger central body. In aviation, a satellite airport operates around — and within the service area of — a larger primary airport.
Why Pilots Care
Enables direct, efficient routing between smaller airports without entering the busiest airspace around the main airport.
Intuition Check
Do not read satellite airports as airports involving space satellites. Here, satellite means nearby and connected to a main airport area, but separate from the main airport.
Example Sentence 1
Many of the TEC routes in the Los Angeles Basin connect satellite airports such as Fullerton and Hawthorne rather than the primary airport at LAX.
Example Sentence 2
Routes between satellite airports around the terminal area keep traffic flowing without overloading the main airport's approach control.