The IBISWorld Global Logistics - Air Freight industry report comprises establishments primarily engaged in the air transportation of commercial cargo and are either: (1) scheduled operators - provide air cargo capacity in the belly holds of passenger or freight aircraft; (2) charter operators - provide freight transport on an unscheduled basis usually outside the network route of airlines; (3) freight operators - air transport dedicated to freight only; and (4) integrated carriers that operate their own aircraft to carry cargo as part of a door-to-door express service for shippers and importers of goods. The industry includes air transportation that is part of national postal systems. It excludes door-to-door courier services for small goods and parcels.