Update, 8am Wednesday June 29
New Zealand is worst affected by the volcanic ash cloud from Chilean volcano Puyehue-Cordón Caulle today, with Queenstown and Christchurch domestic and trans-Tasman flights on Qantas and Jetstar cancelled.
All other airlines report their flights are operating.
For Qantas and Jetstar passengers, the rest of the schedule is on track to fly today, unless you're heading for Johannesburg, Buenos Aires and Santiago on Qantas. Those flights are experiencing various levels of delay -- over sixty hours in some cases.
Qantas' Jetconnect subsidiary plans to fly all Wellington and Auckland flights, but Queenstown and Christchurch flights have been cancelled.
Jetstar's New Zealand domestic, trans-Tasman and international operation is also expected to run to schedule, with the exception of Queenstown and Christchurch flights.
The Sydney-Auckland flight QF321 and Auckland-Sydney flight QF322 will be suspended until further notice, as these are codeshare services operated by LAN Airlines, which is temporarily rerouting those flights via Papeete in French Polynesia to avoid the ashcloud over New Zealand airspace. (And no, you can't buy a cheap ticket to Tahiti that way.)
Qantas is also stopping in Papeete on its Sydney-Buenos Aires flight, which has been suspended recently for over two days.
QF25 Sydney-Auckland-Los Angeles services on Qantas have also restarted.
Flight QF63 from Sydney to Johannesburg is stopping in Perth to refuel until further notice, so schedules will be delayed. Recent flights have been experiencing around four hours of delay.