Archive · 11 Sep 2026
Air Traffic Controller Shortage Causes Sydney Airport Flight Disruptions
Sydney Airport had many delayed and cancelled flights on Friday morning.
This happened because there were not enough air traffic controllers working.
Air traffic controllers help airplanes safely take off, land and move through the sky.
About 14 arriving flights were cancelled, and some flights were delayed by more than an hour.
Airservices Australia changed the number of planes allowed to use the airport for a while.
The restrictions ended at 8:15 a.m., and flights were mostly back on time by the afternoon.
The agency said eight of its 49 Sydney controllers were unavailable for long periods.
Officials are also examining several recent situations in which planes came too close to each other.
A shortage of air traffic controllers caused cancellations and significant delays at Sydney Airport on Friday morning.
Airservices Australia said about 14 inbound flights were cancelled and some delays exceeded one hour.
Eight of Sydney’s 49 controllers were unavailable because of long-term absences, leaving limited staffing flexibility.
Air traffic flow measures were lifted at 8:15 a.m., with flights returning to schedule in the afternoon.
The disruption follows six reported near-misses at Sydney Airport and ongoing investigations into possible safety factors.
- Who
- Airservices Australia, its air traffic controllers, airlines and passengers were affected; the Australian Transport Safety Bureau is investigating related near-misses.
- What
- A shortage of air traffic controllers caused flight cancellations and significant delays at Sydney Airport.
- When
- Friday morning; the traffic measures ended at 8:15 a.m., with flights back on schedule in the afternoon.
- Where
- Sydney Airport, Australia.
- Why
- Unexpected absenteeism occurred amid longer-term staff shortages, leaving too few controllers available to absorb the staffing gap.
- Cancellations
- About 14 inbound flights were cancelled.
- Delays
- Some delays exceeded one hour.
- Controller staffing
- Sydney has 49 controllers, with 41 needed to be operational.
- Unavailable staff
- Eight controllers were unavailable because of long-term absences.
- Traffic measures
- Air traffic flow measures were lifted at 8:15 a.m.
- Recent safety scrutiny
- Six near-misses were reported at Sydney Airport over about a month.
- Investigation
- The Australian Transport Safety Bureau is investigating the close calls.