AA3851 ChicagoORD · 20:59 ChattanoogaCHA
AA3851 by American Airlines flies from Chicago (ORD) to Chattanooga (CHA) for the Tue, Oct 20 departure.
departs ORD · on schedule
board checked 6m ago · checking again in 45s
Where the minutes go
last 3 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWhen it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Chicago to Chattanooga flights today
same route · American AirlinesIf AA3851 is cancelled, these are the other American Airlines nonstop flights from Chicago to Chattanooga on the same day, with scheduled departure times in ORD local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How AA3851 actually runs
Pro Flight Search has tracked every published board update for AA3851 across the ORD and CHA boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 3 completed legs so far: departed -2 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how AA3851 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 ORD and CHA published them.
Planning around AA3851? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — AA3851 Chicago to Chattanooga on-time performance, measured from the ORD and CHA airport boards.
https://proflightsearch.com/flight/AA3851
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