AA4645 ChicagoORD St LouisSTL
AA4645 by American Airlines flies from Chicago (ORD) to St Louis (STL).
scheduled from ORD
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at ORD and STL 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 Chicago to St Louis flights today
same route · American AirlinesIf AA4645 is cancelled, these are the other American Airlines nonstop flights from Chicago to St Louis 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 AA4645 actually runs
Pro Flight Search has tracked every published board update for AA4645 across the ORD and STL boards: schedule changes, gate pushes and actual clocks. Combined risk score: 1.5/100. Based on airport operations, weather, and cached board history at ORD and STL.
The verdict above is that record speaking, so it reflects how AA4645 operates rather than what the timetable promises. Numbers refresh as new flights operate.
Planning around AA4645? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — AA4645 Chicago to St Louis on-time performance, measured from the ORD and STL airport boards.
https://proflightsearch.com/flight/AA4645
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