Kiwi trans-Tasman Easter travellers are being warned to get to the airport early and check travel insurance policies, as strikes loom across the ditch.
Strike action by Border Force and Immigration officers at Australia's international airports has been timed for Easter for maximum impact.
House of Travel commercial director Brent Thomas says Kiwis booked to travel to Australia on Thursday should keep a close eye on their airline's website, or maintain contact with their travel agent.
"At this stage it is difficult to tell how disruptive the strike will be - while we are hopeful it will follow the pattern of the Australian airport strike in November which resulted in minimal disruptions, reports are advising customers there could be lengthy delays," he said.
He recommended getting to the airport early and allowing plenty of time for delays, as well as checking insurance policies for cancellation coverage.
"Make sure you make arrangements at the other end to let anyone who is expecting you know you could be a little late getting in."
The Community and Public Sector Union says the rolling stoppages at airports from Tuesday are part of a long-running industrial dispute with the federal government over work conditions.
"Immigration, border force and other airport workers are deliberately picking a time when it will have an impact and get attention," CPSU national secretary Nadine Flood told reporters in Sydney.
"Because nothing else seems to have got the government's attention in the last six months."
Ms Flood said Prime Minister Malcolm Turnbull had ignored the union's offer of talks and she warned that industrial action at airports could drag on for weeks.
"Those strikes can be averted at any point if the government is prepared to actually sit down and come up with a sensible solution," she said.
Immigration and Border Protection officers are expected to walk off the job for 24 hours on Thursday.