AA4259 St LouisSTL · 16:50 ChicagoORD · 18:29
AA4259 by American Airlines flies from St Louis (STL) to Chicago (ORD) for the Tue, Sep 8 departure.
arrival expected at ORD · on schedule
board checked 1m ago · checking again in 45s
Where the minutes go
last 4 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 boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at STL 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.
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 St Louis to Chicago flights today
same route · American AirlinesIf AA4259 is cancelled, these are the other American Airlines nonstop flights from St Louis to Chicago on the same day, with scheduled departure times in STL local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How AA4259 actually runs
Pro Flight Search has tracked every published board update for AA4259 across the STL and ORD boards: schedule changes, gate pushes and actual clocks. Usually lands ~34 min late. Based on 4 confirmed landings · 1/4 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how AA4259 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 STL and ORD published them.
Planning around AA4259? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — AA4259 St Louis to Chicago on-time performance, measured from the STL and ORD airport boards.
https://proflightsearch.com/flight/AA4259
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