Canberra Airport is considering closing on Tuesdays as well as Saturdays as the crash in passenger numbers bites deeper into its income.
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Its owners had already decided on closing on two Saturdays at the end of August but now say they are considering extending the closures to following Saturdays and to Tuesdays.
They are also calling on the federal government to devise a "national aviation recovery plan".
The airport has seen its passenger numbers drop by 99 per cent.
"We simply can't keep functioning when aviation travel is down to around 1 per cent of pre-COVID-19 passenger numbers," head of aviation Michael Thomson said.
Canberra Airport managing director Stephen Byron said: "One of the reasons we continue to shut down and gradually put the business to sleep is that there is no plan, there is no pathway and there is no hope.
"That's not just for us for a business, there are individuals' lives who need these jobs."
He wants the federal and state and territory governments to do more to keep the industry going.
"Prerequisites may include COVID-19 testing, heat screening, mask-wearing and any number of other measures that we shouldn't try to guess at now," Mr Thomson said.
"What's important is that the discussion is had between the health officials, the aviation industry and governments for a coordinated approach - and that it happens now before it's too late."
Other countries are putting in place measures to try to keep flying going.
In Germany, there's now widespread testing of passengers on arrival.
Mr Thomson said New Zealand had far more aircraft flying than Australia.
"This month their domestic aviation industry will be back to operating at 70 per cent of pre-COVID-19 capacity. In August alone New Zealand has added 408 one-way flights to their domestic flight schedule," he said.
"There has been no transmission of COVID-19 on an Australian domestic flight, most states and territories within Australia are COVID-19-free (including the ACT) and travel between these COVID-19-free locations would be the most sensible flight routes to be supported by the health officials."
Earlier this month, Virgin Airlines announced 3000 jobs would go as part of a restructure under new owners Bain Capital.
Last month, Qantas announced 6000 jobs were to be cut and a large number of aircraft grounded.