UA4778 Grand RapidsGRR · 05:44 ChicagoORD · 05:59
UA4778 by United Airlines flies from Grand Rapids (GRR) to Chicago (ORD) for the Sat, Oct 17 departure.
arrived at ORD · 27 min early
⚖ UA4778 typically leaves +37 and lands +5. The air wins minutes back.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 operationmedian arrival +5 min · 0 cancelled · 15 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at GRR 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. This route's tracked sample is still thin — treat these as an early read, not a precise forecast.
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 Grand Rapids to Chicago flights today
same route · United AirlinesIf UA4778 is cancelled, these are the other United Airlines nonstop flights from Grand Rapids to Chicago on the same day, with scheduled departure times in GRR local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA4778 actually runs
Pro Flight Search has tracked every published board update for UA4778 across the GRR and ORD boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 14 confirmed landings · 13/14 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 UA4778 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: N532GJ, N794SK, N784SK, N788SK.
Board clocks recorded as GRR and ORD published them.
Planning around UA4778? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA4778 Grand Rapids to Chicago on-time performance, measured from the GRR and ORD airport boards.
https://proflightsearch.com/flight/UA4778
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