UA4534 GRB → ORD

United Airlines · Green Bay, WI to Chicago, IL · 48 flights observed, 2026-01-06 to 2026-03-04 · 173 mi

This flight has been on time less than half the time (40%) — expect a real chance of a delay.

UA4534 covers more than one route in the data window — the stats below are for GRB → ORD, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
40%
Median delay
+20 min
90th percentile
+111 min
Cancellation rate
0%

How often is UA4534 on time?

Across 48 flights on GRB → ORD from 2026-01-06 to 2026-03-04, UA4534 arrived within 15 minutes of schedule 40% of the time. The median arrival delay was +20 min, and the worst 10% of flights arrived +111 min or later. 0% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time1940%
16-30 min919%
31-60 min1123%
61-120 min48%
2+ hrs510%

Performance by month

MonthFlightsOn-timeAvg delay
2026-012638%+69 min
2026-021839%+28 min
2026-03450%+10 min

Performance by day of week

DayFlightsOn-time
Mon650%
Tue933%
Wed956%
Thu520%
Fri50%
Sat875%
Sun617%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…