AC851 LondonLHR · 10:15 CalgaryYYC · 12:50
AC851 by Air Canada Jetz flies from London (LHR) to Calgary (YYC) for the Sun, Sep 6 departure.
estimated arrival at YYC · local time · ~3h 06m from now
board checked 27m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 11:12 · typical taxi-out at LHR ≈ 9.6 min. No receiver coverage over open ocean.
Where the minutes go
last 5 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival +8 min · 0 cancelled · 5 operations tracked
The route today
live boardsWeather lens
Weather-conditioned outlook for this flight right now
Measured, 90-day sampleDriven mainly by YYC (Calgary), currently flying MVFR (marginal visual). For this route and airline, under conditions like today's, over the last 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.
How AC851 actually runs
Pro Flight Search has tracked every published board update for AC851 across the LHR and YYC boards: schedule changes, gate pushes and actual clocks. Usually lands ~19 min late. Based on 4 confirmed landings · 2/4 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how AC851 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: CGHKC, CGFAF, CGFAH, CGHKW.
Board clocks recorded as LHR and YYC published them.
Planning around AC851? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — AC851 London to Calgary on-time performance, measured from the LHR and YYC airport boards.
https://proflightsearch.com/flight/AC851
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