Air Transportation

conveyance by aircraft, air travel

Aviation refers to all activities involving the operation of heavier-than-air aircraft, machines designed for atmospheric flight. The term also describes the organizations and regulatory bodies as well as the personnel related with the operation of aircraft and the industries involved in airplane manufacture, development, and design.
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Noun
1. transportation by air
(synonym) air transport
(hypernym) transportation, shipping, transport

Interstate, overseas, or foreign air transportation or the transportation of mail by aircraft. (14CFR1)

Includes establishments that provide domestic and international passenger and freight services, and establishments that operate airports and provide terminal facilities. Also included are flying services such as crop dusting and aerial photography. (BEA1)