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A strong 5.8 magnitude earth quake in Christchurch earlier today and a series of damaging aftershocks have made it impossible to predict further flight disruptions to the New Zealand city at this stage.
Services from Australia were either diverted mid flight to other NZ cities or cancelled, and all passengers with bookings in the near future must check with their carriers prior to going to the airport at the very least if not previously advised of schedule changes or alternatives.
While Christchurch airport can be opened at short notice which is handy for those flying there from other parts of NZ, the potential disruption on trans Tasman routes will always be greater.