WS4451 CancúnCUN · 16:55 TorontoYYZ · 21:40
WS4451 by WestJet flies from Cancún (CUN) to Toronto (YYZ).
scheduled from CUN
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at CUN and YYZ are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.
Under low visibility at YYZ, WestJet has historically cancelled ~16% of flights, vs 2.4% in clear conditions, over the trailing 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Cancún to Toronto flights today
same route · WestJetIf WS4451 is cancelled, these are the other WestJet nonstop flights from Cancún to Toronto on the same day, with scheduled departure times in CUN local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WS4451 actually runs
Pro Flight Search has tracked every published board update for WS4451 across the CUN and YYZ boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: landed +10 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how WS4451 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: C-GWSB.
Board clocks recorded as CUN and YYZ published them.
Planning around WS4451? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — WS4451 Cancún to Toronto on-time performance, measured from the CUN and YYZ airport boards.
https://proflightsearch.com/flight/WS4451
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