Premier Mark McGowan will seek urgent advice on a potential influx of travellers scrambling back from coronavirus-struck Bali to return home.
Australians in Indonesia are facing fines from Thursday after the immigration authority announced that it would not automatically extend expired visas or permits for stays.
The Smart Traveler website of the Department of Foreign Affairs and Trade warns that flights to Australia are very limited and those who obtain permits can face detention or deportation as well.
Coronavirus, the website says, is widespread in Indonesia.
It is unclear what effect on foreign arrivals the future influx of returning passengers would have on current caps.
Perth Airport currently only receives about 525 international passengers per week.
McGowan said he had not been informed on Monday about the issue but would seek urgent Commonwealth advice.
“We have to cope with large numbers of people still coming into the country. At any given point in time we have between 1200 and 1500 people in quarantine hotels,” he said.
“What we don’t want to have happen is problems in running those as they’ve had in Victoria, and that’s really a numbers game.”
Federal Health Minister Greg Hunt said it was up to the states and territories to decide if more returning travellers should be welcomed.
“They’ve been very careful in their assessments and I think it’s important that they are careful and will be guided by their honest judgment as to their safe capacity,” he said.
The premier said he hoped legislation allowing the state to charge returned travellers for hotel quarantine would pass through parliament this week.
It will be retrospective to July 17.
“People have now had six months to come home,” he said.
“There’s a limited set of exemptions in hardship cases.
“We expect there’ll be about 10 per cent of people eligible for that.
“But other than that, people will be paying.”