Flying using aircraft (machines designed by humans for atmospheric flight), as well as the activities, industries, and regulatory bodies associated with aircraft.
travel via aircraft; "air travel involves too much waiting in airports"; "if you've time to spare go by air"
the aggregation of a country's military aircraft
travel via aircraft; "air travel involves too much waiting in airports"; "if you''ve time to spare go by air"
the art of operating aircraft
the operation of aircraft to provide transportation
