AC856Air Canada · YYZ → LHR
live · 3m ago
Route confirmed Air Canada

AC856 TorontoYYZ · 20:10 LondonLHR · 08:30

AC856 by Air Canada flies from Toronto (YYZ) to London (LHR) for the Fri, Nov 6 departure.

Right nowDescending into London · off blocks 20:42 · 32 min late
08:32

estimated arrival at LHR · local time · ~3 min from now

LivePosition · updated 3m ago
YYZ9 mi · ~3 min leftLHR
2,000 ftAltitudedescending
186 mphSpeed162 kt
270°Direction

Live position · flown path, last 5h 58m

⚖ AC856 typically leaves +29 and lands −13. The air wins minutes back.
Typical gate push+29 minmedian posted departure
Typical arrival−13 minmedian over 15 operations
Wins back in air~42 minmedian gate push vs arrival · how planes make up time → Cancellation0 in 15tracked operations · cancellation odds calculator →

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
11-07
+32 gate · +2 arrival
11-06
+32 gate · +2 arrival
11-05
+14 gate · −30 arrival
11-04
+10 gate · −13 arrival
11-03
+33 gate · +20 arrival
11-02
+10 gate · −40 arrival
11-01
+30 gate · −2 arrival

The 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 operation

median arrival −13 min · 0 cancelled · 15 operations tracked

The route today

live boards
YYZTorontoOn-time likelyYYZ delay board →
LHRLondonOn-time likelyLHR delay board →
YYZ→LHRevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
46%Chance of 15+ min delay
6.8%Chance of cancellation
+17 minTypical airport delay in this weather

Driven mainly by LHR (London), currently flying LIFR (low instrument). These figures come from both airports' records 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 →

Tomorrow at Toronto

Forecast

Sun 8 Nov, local date

High11°Clikely 10°C to 13°C
Low4°Clikely 2°C to 6°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at London

Forecast

Sun 8 Nov, local date

High9°Clikely 8°C to 11°C
Low5°Clikely 2°C to 7°C
  • 49% chance of fog

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Toronto to London flights today

same route · Air Canada
AC854departs 18:05
AC852departs 21:15
AC858departs 23:00

If AC856 is cancelled, these are the other Air Canada nonstop flights from Toronto to London on the same day, with scheduled departure times in YYZ local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How AC856 actually runs

Pro Flight Search has tracked every published board update for AC856 across the YYZ and LHR boards: schedule changes, gate pushes and actual clocks. Usually lands ~18 min early. Based on 12 confirmed landings · 9/12 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 AC856 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
11-07YYZ 20:10 20:42 (+32)LHR 08:30 08:32 (+2)
11-06YYZ 20:10 20:42 (+32)LHR 08:30 08:32 (+2)
11-05YYZ 20:10 20:24 (+14)LHR 08:30 08:00 (−30)
11-04YYZ 20:10 20:20 (+10)LHR 08:30 08:17 (−13)
11-03YYZ 20:10 20:43 (+33)LHR 08:30 08:50 (+20)
11-02YYZ 20:10 20:20 (+10)LHR 08:30 07:50 (−40)
11-01YYZ 20:10 20:40 (+30)LHR 08:30 08:28 (−2)
10-31YYZ 21:10 21:16 (+6)LHR 08:30 07:43 (−47)
10-30YYZ 21:10 00:26 (+196)LHR 08:30 10:39 (+129)
10-29YYZ 21:10 21:32 (+22)LHR 08:30 07:51 (−39)
10-28YYZ 21:10 21:38 (+28)LHR 08:30 08:07 (−23)
10-27YYZ 21:10 21:50 (+40)LHR 08:30 09:31 (+61)
10-26YYZ 21:10 21:31 (+21)LHR 08:30 07:41 (−49)
10-25YYZ 21:10 21:48 (+38)LHR 08:30 08:25 (−5)
10-24YYZ LHR 08:35 07:59 (−36)

Aircraft

Recent tails: C-FIUL, C-FIUR, C-FIVM, C-FIUW.

Board clocks recorded as YYZ and LHR published them.

Planning around AC856? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: AC856 Toronto to London on-time performance, measured from the YYZ and LHR airport boards.

Canonical URL
https://proflightsearch.com/flight/AC856
How we measure this →