International Air Transport Association
From Longman Business DictionaryInternational Air Transport AssociationˌInternational Air ˈTransport Associˌation abbreviation IATA nounTRAVELORGANIZATIONS an organization that most international AIRLINEs (=companies that carry people and goods by plane) belong toThe International Air Transport Association has warned that airport capacity must be increased in western Europe.