The Chilean volcanic ash cloud has once again disrupted airline services, with flights across the Tasman being cancelled.
MetService has warned that the ash cloud is expected at altitudes above 20,000 feet for parts of the lower South Island from Wednesday morning.
Jetstar, after resuming services on Sunday, tonight announced it would
again be cancelling flights because of the volcanic ash cloud.
Flights to and from Christchurch and Queenstown and Queenstown to Auckland due Wednesday have all been cancelled.
Qantas flights from Sydney to Queenstown have also been delayed for at least 24 hours.
Air New Zealand will continue to run flights as scheduled.
Domestic flights with Air New Zealand to and from Invercargill, Christchurch, Dunedin, Queenstown and Timaru are still running as scheduled.