Flight OddsUA4580 ORD → GRB
United Airlines · Chicago, IL to Green Bay, WI · 63 flights observed, 2025-09-25 to 2026-01-02 · 173 mi
UA4580 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
62%
Median delay
0 min
90th percentile
+126 min
Cancellation rate
0%
How often is UA4580 on time?
Across 63 flights on ORD → GRB from 2025-09-25 to 2026-01-02, UA4580 arrived within 15 minutes of schedule 62% of the time. The median arrival delay was 0 min, and the worst 10% of flights arrived +126 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 | 39 | 62% |
| 16-30 min | 8 | 13% |
| 31-60 min | 3 | 5% |
| 61-120 min | 6 | 10% |
| 2+ hrs | 7 | 11% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-09 | 6 | 50% | +23 min |
| 2025-10 | 31 | 71% | +14 min |
| 2025-11 | 23 | 57% | +49 min |
| 2025-12 | 2 | 0% | +95 min |
| 2026-01 | 1 | 100% | +10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 63% |
| Tue | 8 | 50% |
| Wed | 9 | 67% |
| Thu | 9 | 56% |
| Fri | 12 | 67% |
| Sat | 8 | 50% |
| Sun | 9 | 78% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…