Canada Major Airports Weather Delays

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By Chris O’Brien, Startups & Innovation CorrespondentReviewed by Priya SharmaForecast data: Open-Meteo & Environment and Climate Change Canada

Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the BuzzLayer Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.

Check the live forecast above for current conditions at Canada’s major airports. Weather delays most often come from winter storms, low ceilings, or high winds; use airport-specific alerts and airline apps to adjust your plans before you head out.

Which Canadian airports see the most weather delays?

Toronto Pearson, Vancouver International, and Montréal-Trudeau regularly top the list for weather-related disruptions. Toronto’s lake-effect snow and Vancouver’s winter fog can reduce visibility and slow operations, while Calgary and Edmonton face sudden blizzards and wind gusts that force ground stops. The live forecast above gives a snapshot of current risk at each hub.

How do winter storms affect flight schedules?

Winter storms create a cascade: de-icing lines back up, runways need clearing, and aircraft are held at departure gates. A system moving through the Great Lakes or along the Pacific coast can ripple delays across the country for hours. Pairing the live forecast above with weather warnings helps you anticipate longer waits.

Busiest airportToronto Pearson (YYZ) – 45 million passengers per year

Most common delay causeLow cloud ceiling / fog (30% of all weather delays)

Worst month for delaysJanuary – ice and snow events peak

Delays from winter stormsAverage 2 hours per event at major hubs

What is the most common weather delay at Canadian airports?

Low cloud ceiling and fog account for roughly one-third of all weather-related delays, especially at Vancouver and Toronto. Reduced visibility forces air traffic control to increase spacing between arrivals, slowing the entire schedule.

How can I check if my flight is delayed before leaving home?

Use your airline’s app or website, and cross‑reference with the live forecast above for conditions at your departure and arrival airports. Many carriers now send push notifications when delays are confirmed.

Are there seasonal patterns for weather delays in Canada?

Yes. Winter (December–February) brings the highest delay numbers from snow, ice, and wind. Spring and fall see occasional fog or thunderstorms. Summer delays are usually thunderstorm‑related, especially in southern Ontario and the Prairies.