UA4574 ChicagoORD · 06:59 ChattanoogaCHA
UA4574 by United Airlines flies from Chicago (ORD) to Chattanooga (CHA) for the Thu, Aug 20 departure.
en route from ORD to CHA
board checked 3m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 06:49 · typical taxi-out at ORD ≈ 8 min.
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 · 9 operations tracked
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 · United AirlinesIf UA4574 is cancelled, these are the other United 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 UA4574 actually runs
Pro Flight Search has tracked every published board update for UA4574 across the ORD and CHA boards: schedule changes, gate pushes and actual clocks. Usually departs ~5 min early. Based on 9 confirmed departures · 6/9 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA4574 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: N516GJ, N577GJ, N520GJ.
Board clocks recorded as ORD and CHA published them.
Planning around UA4574? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA4574 Chicago to Chattanooga on-time performance, measured from the ORD and CHA airport boards.
https://proflightsearch.com/flight/UA4574
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