UA4778United Airlines · GRR → ORD
live · 41m ago
Route confirmed United Airlines

UA4778 Grand RapidsGRR ChicagoORD

UA4778 by United Airlines flies from Grand Rapids (GRR) to Chicago (ORD).

Right nowNext departure tomorrow Operates daily
05:44

scheduled from GRR

The route today

live boards
GRRGrand RapidsOn-time likelyGRR delay board →
ORDChicagoOn-time likelyORD delay board →
GRR→ORDevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
38%Chance of 15+ min delay
1.3%Chance of cancellation
+7 minTypical airport delay in this weather

Conditions 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. These figures come from both airports' records 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 →

Tomorrow at Grand Rapids

Forecast

Wed 11 Nov, local date

High12°Clikely 10°C to 14°C
Low3°Clikely 2°C to 6°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Chicago

Forecast

Wed 11 Nov, local date

High14°Clikely 11°C to 16°C
Low5°Clikely 3°C to 8°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Grand Rapids to Chicago flights today

same route · United Airlines
UA3405departs 05:32
UA2099departs 07:00
UA263departs 08:40
UA5338departs 08:40
UA6022departs 10:15
UA5329departs 12:00

If 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 that show a delay still operate. Rebooking usually helps only when that delay is very large. 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. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at GRR and ORD.

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.

Planning around UA4778? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: UA4778 Grand Rapids to Chicago on-time performance, measured from the GRR and ORD airport boards.

Canonical URL
https://proflightsearch.com/flight/UA4778
How we measure this →