UA4536 LouisvilleSDF · 13:50 ChicagoORD · 14:30
UA4536 by United Airlines flies from Louisville (SDF) to Chicago (ORD) for the Tue, Aug 18 departure.
arrived at ORD · 1 min early
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 SDF 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 Louisville to Chicago flights today
same route · United AirlinesIf UA4536 is cancelled, these are the other United Airlines nonstop flights from Louisville to Chicago on the same day, with scheduled departure times in SDF local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA4536 actually runs
Pro Flight Search has tracked every published board update for UA4536 across the SDF and ORD boards: schedule changes, gate pushes and actual clocks. Usually lands ~33 min late. Based on 4 confirmed landings · 2/4 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how UA4536 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: N579GJ, N503GJ, N540GJ, N506GJ.
Board clocks recorded as SDF and ORD published them.
Planning around UA4536? 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 — UA4536 Louisville to Chicago on-time performance, measured from the SDF and ORD airport boards.
https://proflightsearch.com/flight/UA4536
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