UA4477 ChicagoORD · 06:59 Knoxville/MaryvilleTYS
UA4477 by United Airlines flies from Chicago (ORD) to Knoxville/Maryville (TYS).
scheduled from ORD
Where the minutes go
last 6 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 · 6 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 Knoxville/Maryville flights today
same route · United AirlinesIf UA4477 is cancelled, these are the other United Airlines nonstop flights from Chicago to Knoxville/Maryville 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 UA4477 actually runs
Pro Flight Search has tracked every published board update for UA4477 across the ORD and TYS boards: schedule changes, gate pushes and actual clocks. Usually departs ~22 min late. Based on 6 confirmed departures · 3/6 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA4477 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: N547GJ.
Board clocks recorded as ORD and TYS published them.
Planning around UA4477? 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 — UA4477 Chicago to Knoxville/Maryville on-time performance, measured from the ORD and TYS airport boards.
https://proflightsearch.com/flight/UA4477
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