Definition
A defined corridor of airspace established for the routing of aircraft, typically 8 nautical miles wide (4 NM either side of centerline) and extending from 1,200 feet above the ground up to but not including 18,000 feet MSL. Low-altitude airways in the United States are designated as Victor airways (V-routes) and are based on VOR navigation aids.
Plain English
An airway is a kind of highway in the sky. It is a marked path between navigation stations that pilots follow when flying from one place to another, especially under instrument rules.
Context Anchor
Seen on aviation charts, route clearances, flight plans, and pilot notices where space is limited and AWY may be used instead of writing out airway.
Derivation
From 'air' + 'way,' meaning a route through the air — built directly on the older idea of a 'way' as a traveled path. The aviation meaning simply lifts that everyday idea into the sky.
Why Pilots Care
Following airways ensures pilots stay within controlled airspace with ATC services and avoid obstacles.
Intuition Check
An airway is not just any open air you can fly through. In this context, it means a published route or corridor used for navigation.
Example Sentence 1
We filed the flight along V23 from the departure VOR to our destination, staying on the airway the entire way.
Example Sentence 2
Airways like J routes are used for high-altitude jet traffic across the country.