AC8478 ChicagoORD · 07:05 MontréalYUL · 10:17
AC8478 by Air Canada flies from Chicago (ORD) to Montréal (YUL) for the Fri, Oct 30 departure.
arrived at YUL · 10 min late
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 +0 min · 0 cancelled · 5 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at ORD and YUL are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. 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 on this route
ForecastChicago to Montréal with Air Canada · Sat 31 Oct, local date
- Chance a departure is cancelled
- 1.2%0.8× usual
- Chance a departure leaves 60+ min late
- 7.3%0.7× usual
Forecast weather: 92% chance of rain at Chicago
Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 3 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Chicago to Montréal flights today
same route · Air CanadaIf AC8478 is cancelled, these are the other Air Canada nonstop flights from Chicago to Montréal on the same day, with scheduled departure times in ORD 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 AC8478 actually runs
Pro Flight Search has tracked every published board update for AC8478 across the ORD and YUL boards: schedule changes, gate pushes and actual clocks. Usually lands ~8 min late. Based on 5 confirmed landings · 5/5 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how AC8478 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-FEJP, C-FEKI, C-FRQN, C-FRQK.
Board clocks recorded as ORD and YUL published them.
Planning around AC8478? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search: AC8478 Chicago to Montréal on-time performance, measured from the ORD and YUL airport boards.
https://proflightsearch.com/flight/AC8478
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