Where most likely are the listeners?

This announcement is for the passengers of Flight 109 bound for Sydney. Departure will be postponed for an hour due to foggy conditions. The estimated time of departure for Flight 109 is at 11:30 A.M. All arriving and departing flights are expected to be back on schedule between 11:00 A.M. and 12:00 P.M. On behalf of Emerald Airlines management and crew, we would like to apologize for the delay.