Police say a passenger's dispute over wanting more nuts was behind a Chicago-bound United Airlines flight being forced to divert to Northern Ireland.

A South Korean court has suspended the prison term for the Korean Air chairman's daughter whose onboard "nut rage" delayed a flight last year.

A Seoul court on Thursday sentenced a former Korean Air executive to a year in prison for aviation law violations that stemmed from her inflight tantrum over how she was served macadamia nuts.