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Air Canada

Is AC851 delayed?

Service date: · Actual departure date; scheduled departure unavailable (Europe/London)

Arrived

31 min early

Official source · Updated

Departure

London

LHR

Actual

Sep 10

Arrival

Calgary

YYC

Actual

Scheduled 18:50

Sep 10

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Not available
Estimated
Not available
Actual

Arrival · UTC

Scheduled
Estimated
Actual

Recent arrivals

Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.

  • LHR → YYC

    25 min early

  • LHR → YYC

    14 min early

  • LHR → YYC

    17 min early

  • LHR → YYC

    20 min early

  • LHR → YYC

    24 min late
Flight history and details

Aug 18, 2026 — Sep 17, 2026

Observed arrivals
27
Arrivals over 15 minutes late
6
Observed cancellations
0
Observed occurrences
28

Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.

How flight status works

AC851 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 16, 2026ArrivedLondonCalgary
-25
Sep 15, 2026ArrivedLondonCalgary
-14
Sep 14, 2026ArrivedLondonCalgary
-17
Sep 13, 2026ArrivedLondonCalgary
-20
Sep 12, 2026ArrivedLondonCalgary
24
Sep 10, 2026ArrivedLondonCalgary
-31
Sep 9, 2026ArrivedLondonCalgary
0
Sep 8, 2026ArrivedLondonCalgary
-10
Sep 7, 2026ArrivedLondonCalgary
-23
Sep 6, 2026ArrivedLondonCalgary
-6
Sep 5, 2026ArrivedLondonCalgary
-7
Sep 4, 2026ArrivedLondonCalgary
-27
Sep 3, 2026ArrivedLondonCalgary
159
Sep 2, 2026ArrivedLondonCalgary
19
Sep 1, 2026ArrivedLondonCalgary
-23
Aug 31, 2026ArrivedLondonCalgary
-12
Aug 30, 2026ArrivedLondonCalgary
0
Aug 29, 2026ArrivedLondonCalgary
78
Aug 28, 2026ArrivedLondonCalgary
17
Aug 27, 2026ArrivedLondonCalgary
21
Aug 26, 2026ArrivedLondonCalgary
-15
Aug 25, 2026ArrivedLondonCalgary
-43
Aug 24, 2026ArrivedLondonCalgary
-38
Aug 22, 2026ArrivedLondonCalgary
-41
Aug 21, 2026ArrivedLondonCalgary
-45
Aug 20, 2026ArrivedLondonCalgary
-32
Aug 19, 2026ArrivedLondonCalgary
-18

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