Technically yes - HBA is still International - you wouldn't think it though. Flights go to Antarctica for those who cannot survive a few days in the Southern Ocean breaking through Ice on a bright orange boat...
OT, but used to be regular NZ flights HBA-CHC if you go back far enough. Also SQ used to run charters to HBA during summer .... SINGAPORE AIRLINES A340 300 HBA RF 1690 23.jpg photo - Rob Finlayson photos at pbase.com