As Canada edged toward the final days of 2025, thousands of air travelers found their holiday plans unraveling under the weight of extreme winter weather. From December 28 to December 31, a powerful combination of freezing rain, heavy snowfall, and strong winds swept across Eastern Canada, triggering one of the most disruptive travel periods of the year. Airports that typically hum with year-end traffic instead echoed with cancellation announcements, frustrated passengers, and long rebooking queues.

Over this four-day window, a 749 flight cancellations and 3,215 significant delays nationwide. Toronto Pearson International Airport (YYZ) was the undisputed epicenter of the crisis, bearing the brunt with 224 cancellations in Departures and 247 cancellations in Arrivals across all four days (Dec 28–31, 2025). While the worst of the impact occurred on December 29th during peak freezing rain, the ripple effects continued to stall travel through New Year’s Eve.

What Caused these Disruptions?

Meteorologists described the event as a rare convergence of polar vortex conditions and a powerful Eastern winter storm, producing freezing rain, blizzard conditions, and wind gusts reaching 140 km/h in parts of Atlantic Canada. Southern Ontario and Quebec faced ice accretion of up to 15 millimeters, forcing repeated runway closures and overwhelming de-icing operations. Snowfall exceeded 25 centimeters in some regions, while sustained sub-zero temperatures strained airport infrastructure and ground handling systems.

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