UA4420 ChicagoORD · 19:45 Green BayGRB
UA4420 by United Airlines flies from Chicago (ORD) to Green Bay (GRB) for the Mon, Oct 19 departure.
en route from ORD to GRB
board checked 15m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 19:42 · typical taxi-out at ORD ≈ 7.6 min.
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 boardsWhen it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Chicago to Green Bay flights today
same route · United AirlinesIf UA4420 is cancelled, these are the other United Airlines nonstop flights from Chicago to Green Bay 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 UA4420 actually runs
Pro Flight Search has tracked every published board update for UA4420 across the ORD and GRB boards: schedule changes, gate pushes and actual clocks. Usually departs on time. Based on 4 confirmed departures · 4/4 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA4420 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 ORD and GRB published them.
Planning around UA4420? 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 — UA4420 Chicago to Green Bay on-time performance, measured from the ORD and GRB airport boards.
https://proflightsearch.com/flight/UA4420
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