a route regularly used by airplanes; airway.
Origin of air lane
First recorded in 1910–15
Also called skyway.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for air lane
Three minutes later they were in the air flying an air-lane in the dark.Gypsy Flight|Roy J. Snell