Sydney Airport security strike leaves morning queues short

A strike that barely showed at the checkpoint

Hundreds of security screeners walked off the job at Sydney Airport on Friday morning. For most travellers, the first walkout looked like any other busy Friday. Members of the Transport Workers' Union (TWU) employed by contractor Certis stopped work from 6am to 10am across the domestic and international terminals. Both the airport and its largest airline later said flights and wait times were largely unaffected.11 Sydney Airport said it had seen no delays that morning, that passenger queues had been managed effectively and that wait times were minimal. The airport had added staff for the day.11

Qantas gave an equally confident account. It said its contingency plans meant there was no impact on its flights. By 9am, more than 80 per cent of Qantas domestic and regional flights and over 93 per cent of domestic Jetstar flights had left Sydney on time.11 Air New Zealand reported the same pattern for its trans-Tasman services. It said there had been no extra queues and no cancellations out of Sydney after it opened check-in early and contacted customers ahead of time.7

The day is only half over, though. A second four-hour stoppage is scheduled from 5pm to 9pm on Friday evening.1415 The real test of the airport's contingency planning will come during that window.

What the wait-time data showed

The live numbers back up the official accounts, with small differences between outlets. A check of Sydney Airport's live security banner during the morning stoppage showed normal waits, with both domestic terminals, T2 and T3, under 10 minutes.11 One national outlet reported five-minute waits at T1 and T2 at 8am and a 15-minute wait at T3. It noted no major delays at that point.14 Coverage from New Zealand said that at 10am New Zealand time, or 8am in Sydney, international security waits were under five minutes.7

On any reading, those figures sit within what one pre-strike travel guide called a normal range for domestic screening, roughly five to 15 minutes.5 The same guide had warned that cutting screening staff could stretch queues to 45–90 minutes or more.5 That did not happen in the morning. The 15-minute reading at T3, the Qantas domestic terminal, was the only sign of strain, and it was still a long way from the scenario travellers had been told to prepare for.

The pre-strike messaging and what actually happened

The gap between the warnings and the outcome is the clearest part of the story. Before the strike, Sydney Airport, Qantas, Jetstar, Virgin Australia and Rex all warned of possible delays and longer waits.11 One national broadcaster's headline said major delays were expected.14 Qantas told customers the action was expected to disrupt all airlines through the day and promised extra staff to move passengers and bags. Virgin Australia said screening would stay open during the stoppages but might run at reduced capacity.6

The reporting splits on one point: whether any flights were cancelled. Nine's coverage, which was syndicated elsewhere, said some flights on Friday had been cancelled and told passengers to check with their airlines.3 Another outlet repeated the claim, saying some flights had been cancelled. Neither named the flights, the airlines or the number involved. Against that, Qantas said its flights were unaffected and Air New Zealand reported no cancellations.117 A check of the airport's own departures and arrivals boards showed most morning flights were not delayed.11

The best reading is that any cancellations were few and probably not caused by the screening walkout. Such small numbers on a busy Friday could easily have other causes. Passengers flying on Friday evening should still treat "minimal disruption" as the morning's result, not a promise for the evening.

Why the evening window is different

The second stoppage could prove harder to absorb. The 5–9pm period overlaps with the evening rush of business travellers flying home and with the bulk of long-haul international departures, which typically leave between about 7pm and 10pm.5 Passengers on those flights would normally check in and clear security during the strike hours.5

The reports do not fully agree on when the evening action ends. One version of the trade report gave 5–9pm, while another version of the same piece said 5–10pm.1112 The union and most national coverage give 9pm as the end time.81 That is almost certainly the correct schedule. Even so, queues that build late in a stoppage can take time to clear after workers return, as several outlets noted before the strike.6

The airport's advice has not changed. It still urges passengers to arrive early and check with their airline for updates.11 Qantas is also still telling customers to allow extra time at security, despite its strong morning figures.11 Qantas, Jetstar, Virgin and Rex have all offered extra flexibility to passengers who want to change their plans.11 Qantas and Virgin's temporary policies differ in which flights qualify and how fare differences are handled.6

What the dispute is about

The dispute itself is still unresolved. The TWU says the Certis screeners want more full-time jobs, fairer rosters and an end to cuts in part-time hours.14 The strike stems from stalled enterprise agreement talks between Certis Security Australia, its employees and the union. Sydney Airport is not formally part of those talks.1

The union is trying to pull the airport in anyway. Speaking beside striking workers, TWU national secretary Michael Kaine accused Sydney Airport of refusing to invest in its workforce despite record profits above $580 million. He said the airport was telling contractors such as Certis to cut wages and conditions or lose their contracts.1 The union cites a record aeronautical profit of $584.3 million for 2024–25. It also says Certis workers were told earlier this year they might lose their jobs if Sydney Airport did not renew the company's contract.8 TWU NSW secretary Richard Olsen accused the airport of keeping contracts in limbo to boost its bottom line.10

Certis tells a different story. The company says employees received a new offer on Thursday. It said it was disappointed the union went ahead with industrial action that affects travellers while that offer was on the table. Certis also says full-time screeners at Sydney Airport earn more than A$100,000 a year including allowances.7 Earlier in the dispute, it said its pay was well above the industry award.2

The two sides are arguing about different things. Certis points to what full-time screeners earn, while the union's complaint is about how few full-time roles exist, unstable rosters and shrinking part-time hours. A high full-time salary does little for a workforce whose dispute is about access to full-time jobs and predictable shifts.

A pattern of escalation

Friday's action follows earlier walkouts. About 400 screeners joined a two-hour stoppage on 24 September, and more stoppages were planned for 28 September.2 The move from two-hour stoppages to eight hours across two peak periods shows the union is increasing the pressure. Talks between the parties were still going on the day before the strike.6

The timing adds to the stakes. Western Sydney International Airport is due to open later this month, and one outlet notes that the negotiations are drawing attention to how airport workforces are employed as that launch nears.

The takeaway

The morning showed that a screening strike is not automatically a crisis. Contingency staffing and early check-ins helped. So did the warnings themselves, which likely got travellers to the airport early and spread out the crowds. It is reasonable to think the heavy pre-strike coverage helped prevent the disruption it predicted.

The evening is a harder test, with long-haul departures clustered in or just after the strike hours. It also matters which costs fall on passengers. A missed flight caused by a slow security queue is generally the traveller's own risk in Australia, and there is no automatic compensation scheme like Europe's.2 That is a good reason to arrive early even after a smooth morning.

For the dispute, a strike that causes little disruption cuts both ways. It shows that airlines and the airport can absorb the action. It also weakens the union's main source of pressure, which may push it towards longer or broader stoppages if Certis's latest offer is rejected.