Flight OddsUA4539 ORD → GRB
United Airlines · Chicago, IL to Green Bay, WI · 6 flights observed, 2025-12-02 to 2025-12-17 · 173 mi
UA4539 covers more than one route in the data window — the stats below are for ORD → GRB, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
33%
Median delay
+65 min
90th percentile
+115 min
Cancellation rate
0%
How often is UA4539 on time?
Across 6 flights on ORD → GRB from 2025-12-02 to 2025-12-17, UA4539 arrived within 15 minutes of schedule 33% of the time. The median arrival delay was +65 min, and the worst 10% of flights arrived +115 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 2 | 33% |
| 16-30 min | 0 | 0% |
| 31-60 min | 1 | 17% |
| 61-120 min | 2 | 33% |
| 2+ hrs | 1 | 17% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 6 | 33% | +60 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | 3 | 33% |
| Wed | 3 | 33% |
| Thu | No data | — |
| Fri | No data | — |
| Sat | No data | — |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…