AC4374 San FranciscoSFO · 05:00 ChicagoORD
AC4374 by Air Canada flies from San Francisco (SFO) to Chicago (ORD).
scheduled from SFO
Where the minutes go
last 7 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 operation0 cancelled · 10 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at SFO and ORD 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. This route's tracked sample is still thin — treat these as an early read, not a precise forecast.
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 San Francisco to Chicago flights today
same route · Air CanadaIf AC4374 is cancelled, these are the other Air Canada nonstop flights from San Francisco to Chicago on the same day, with scheduled departure times in SFO local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How AC4374 actually runs
Pro Flight Search has tracked every published board update for AC4374 across the SFO and ORD boards: schedule changes, gate pushes and actual clocks. Usually departs ~5 min early. Based on 10 confirmed departures · 10/10 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how AC4374 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as SFO and ORD published them.
Planning around AC4374? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — AC4374 San Francisco to Chicago on-time performance, measured from the SFO and ORD airport boards.
https://proflightsearch.com/flight/AC4374
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