Travellers flying from Canberra Airport are being warned to arrive early and expect additional screening as security is boosted at terminals around Australia on Sunday.
Prime Minister Malcolm Turnbull and law enforcement agencies announced screening at all major airports had been ramped up overnight following the discovery of an alleged terror plot to bring down a plane with a bomb.
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PM flags tighter airport security after terror raids
Prime Minister Malcolm Turnbull says air travellers should expect delays following the discovery of a terrorist plot to bring down an aeroplane.
Around Australia passengers on domestic flights are being told to arrive at the airport two hours before takeoff but Canberra Airport is seeing business as usual without additional delays on Sunday.
Some airlines are contacting passengers nationally via text messages on Sunday to alert them to "additional aviation security measures".
Qantas and Virgin have told passengers to arrive early at Australian airports and to limit the amount of carry-on baggage to speed up screening time.
A Canberra Airport spokeswoman said travellers should arrive at the airport earlier than normal but there were no unexpected delays.
"Canberra Airport takes security seriously. The travelling public can expect to experience an increased level of security scrutiny at the airport but they should not be concerned about these precautionary measures," she told Fairfax Media on Sunday.
"Passengers should allow additional time getting to the airport."
Mr Turnbull said in a press conference early on Sunday morning the new security arrangements, which were in place at Sydney Airport on Thursday before being extended across Australia, were "intensifying" those already in pace.
⚠️We recommend passengers arrive at CBR Airport early due to increased level of security scrutiny.
— Canberra Airport (@CanberraAirport) July 29, 2017
Screening will open the same time but passengers will experience increased security scrutiny
— Canberra Airport (@CanberraAirport) July 30, 2017
"Some of that will be visible, some of it will not be visible, but it will take more time," Mr Turnbull said.
Australian Federal Police Commissioner Andrew Colvin said terrorists were becoming "ingenious" about coming up with ways to bypass security, but he described the measures at Australian airports as some of the best in the world.
"We're very confident that those measures are effective and would have been effective in this circumstance," he said.
He said there was no reason to believe the integrity of airport security had been compromised during the most recent alleged terror plot.
Transport Minister Darren Chester said the increased security measures were in place at Australia's major airports, including Sydney, Melbourne, Brisbane, Darwin, Perth, Adelaide, Canberra, Cairns, Hobart and the Gold Coast.
"While it is important the public is aware of the increased threat, Australians should not be alarmed and those travelling should go about their business with confidence," Mr Chester said.
"Australia's law enforcement and security agencies are among the best in the world and doing everything within their powers to keep the community safe. All Australian airports have been asked to exercise increased vigilance in their security operations, including at security screening points and within the terminal area," he said.