Travellers have been warned to expect major delays at airports across the country due to a national software outage. 

There is a technical outage affecting SmartGate kiosks for inbound and outbound passengers at international airports nationwide.

This means passengers at Adelaide, Brisbane, Cairns, Darwin, Melbourne, Perth and Sydney airports will all likely be affected. 

Sydney Airport said there were lengthy delays at immigration ‘due to a national outage affecting Australian Border Force processing systems’. 

‘Passengers are being processed manually and while inbound and outbound queues are longer than usual, no flights have been impacted,’ a spokesperson for the airport added. 

‘Passengers travelling today are encouraged to check with their airline regarding the status of their flight, and leave plenty of time when travelling to the T1 International Terminal.’ 

Dozens of travellers took to social media to vent their frustration.

‘Sydney airport crazy right now, line has about 700 people in it waiting to get through customs,’ one said.

Another said there were ‘Major delays at Australian international airports as PassPort system fails’. 

Footage from Sydney Airport showed huge queues

Travellers have been warned to expect delays

People reported huge queues at Sydney Airport 

‘I and thousands stuck at Sydney.’ 

A spokesperson for the  Australian Border Force said ‘additional ABF officers are being surged into work areas to manually process passengers and provide as minimal disruption as possible’.

‘The issue is currently being rectified and systems are slowly returning online,’ they added.