air route
noun
a designated route for aircraft flying between particular ground locations at specified minimum altitudes.
Origin of air route
First recorded in 1910–15
Words nearby air route
Example sentences from the Web for air route
That's what I thought you could do, but your evident impatience made me wonder if you had an air-route you could travel by.
Polly and Eleanor |Lillian Elizabeth RoyI shall travel by the air-route,” he added; “it is so much quicker, and far less fatiguing.
The Stretton Street Affair |William Le Queux