Published on
December 21, 2025
Travelers across Australia faced significant disruption today as 350 flight delays and 17 cancellations were recorded across Sydney (SYD) and Melbourne Tullamarine (MEL). Sydney Airport emerged as the most affected hub overall, while Melbourne Tullamarine followed closely with sustained operational impact. At the airline level, Virgin Australia, Qantas, and Jetstar accounted for the largest share of disruptions, driven primarily by delays rather than cancellations. Limited disruption was recorded on services connected to the United States, with six total delays across both airports. The data reflects a delay-heavy disruption pattern, affecting both domestic and international operations at Australia’s two busiest gateways.
Update today: 367 total disruptions were recorded across Sydney and Melbourne, including 350 delays and 17 cancellations.Sydney (SYD) led all airports with 207 delays and 9 cancellations.Melbourne Tullamarine (MEL) followed with 143 delays and 8 cancellations.Virgin Australia, Qantas, and Jetstar were the most affected airlines by volume of delays.International spillover delays were observed across New Zealand, Asia, and the Middle East, though cancellations remained limited outside Australia.Most Affected Airports by Cancellations and DelaysSydney Airport (SYD)
Sydney recorded 121 delays and 5 cancellations directly at the airport, making it the most disrupted location overall. The airport also served as the primary hub affected by airline-wide operational delays.
Melbourne Tullamarine Airport (MEL)
Melbourne Tullamarine reported 76 delays and 4 cancellations at the airport level, reflecting sustained congestion across both domestic and international services.
Brisbane Airport (BNE)
Brisbane saw 10 delays, indicating secondary spillover from disruptions centered in Sydney and Melbourne.
Auckland Airport (AKL)
Auckland recorded 7 delays, highlighting cross-Tasman operational knock-on effects.
Queenstown Airport (ZQN)
Queenstown experienced multiple delays, with a high delay ratio relative to scheduled movements.
Airlines Most Affected by Flight Cancellations and DelaysVirgin Australia
Virgin Australia recorded 6 total cancellations across both airports and more than 50 combined delays, placing it among the most impacted carriers overall.
Qantas
Qantas experienced 4 cancellations and over 80 delays, with disruption concentrated at Sydney and Melbourne.
Jetstar
Jetstar posted the highest number of delays among all airlines, exceeding 90 delayed flights, while cancellations remained limited.
Malaysia Airlines
Malaysia Airlines saw multiple cancellations and delays, particularly affecting services linked to Sydney and Melbourne.
QantasLink
QantasLink recorded a notable volume of delays at Melbourne, reflecting regional network sensitivity to mainline congestion.
How travellers were impacted at major airportsPassengers experienced extended ground delays and schedule uncertainty, particularly during peak operating windows.Missed onward connections were more likely on domestic-to-international itineraries.Rebooking queues increased at major terminals due to delay clustering rather than mass cancellations.Travelers were advised to monitor airline notifications closely and allow additional buffer time for transfers.Ground congestion and aircraft rotation delays affected multiple departures on the same aircraft.Overview of Flight Cancellations
Flight cancellations remained relatively limited compared to delays, totaling 17 cancellations across Sydney and Melbourne Tullamarine. Virgin Australia and Qantas were the primary contributors to cancellation volumes, with Jetstar recording fewer cancellations despite high delay counts. Sydney Airport accounted for the majority of cancellations, followed by Melbourne Tullamarine, reinforcing their role as the core disruption centers. Outside Australia, only isolated cancellations were observed, while international airports linked to Sydney and Melbourne—particularly in New Zealand and Asia—were impacted almost exclusively by delays rather than flight removals from schedules.
Image Source: AI
Source: Different airports and FlightAware
