Jetstar flights are delayed and cancelled nationwide after a major Airbus plane recall which is affecting flights worldwide.
There are long lines at airports including Sydney as the airline is hit by an issue related to plane manufacturer Airbus.
Airbus says a significant number of its best-selling A320 planes are being pulled in a move that industry sources say would disrupt half the global fleet.
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Jetstar told 9News that while they were able to get a few flights off the tarmac this morning, to expect cancellations.
"Due to an Airbus fleet software issue affecting Airbus A320 and A321 operators globally, some of our Airbus-operated flights are unable to depart today," the airline says online.
"Safety is our number one priority. To respond to a precautionary action from Airbus, we have cancelled some Jetstar flights.
"If you are booked to travel today and your flight is delayed or cancelled as a result of this issue, we'll contact you directly via SMS and email to advise of your options including a refund to your original form of payment.
Departure screens at Sydney show multiple cancellations this morning.
However flights leaving this afternoon are so far showing up as on time. at both Sydney and Melbourne.
Passengers should check online before heading to the airport.
Air New Zealand services are also affected.
Airbus says it's related to a "solar radiation" issue on a plane.
"Analysis of a recent event involving an A320 Family aircraft has revealed that intense solar radiation may corrupt data critical to the functioning of flight controls," Airbus said in a statement.
"Airbus has put out a directive that the aircraft, the A320 aircraft, of which there are more than 10,000 around the world, have to have a software update to correct for an error in data when there's intense solar radiation," pilot and aviation expert Richard de Crespigny said.
"So it's not suggesting that there's something wrong with the actual flight controls themselves."
"The problem is that you have to update all the aircraft in your fleet."
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"If you've only got a couple of engineers that have turned up for work, you'd need them to pull in many more."
"You've got to wait for the aircraft to land."
"Maybe the aircraft has been in a hangar overnight. It's just a problem of scheduling all the aircraft to be updated quickly, that's all."
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