Flight OddsUA4580 GRB → ORD
United Airlines · Green Bay, WI to Chicago, IL · 29 flights observed, 2026-04-01 to 2026-04-29 · 173 mi
UA4580 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
59%
Median delay
+1 min
90th percentile
+164 min
Cancellation rate
3%
How often is UA4580 on time?
Across 29 flights on GRB → ORD from 2026-04-01 to 2026-04-29, UA4580 arrived within 15 minutes of schedule 59% of the time. The median arrival delay was +1 min, and the worst 10% of flights arrived +164 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 16 | 59% |
| 16-30 min | 3 | 11% |
| 31-60 min | 1 | 4% |
| 61-120 min | 2 | 7% |
| 2+ hrs | 5 | 19% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-04 | 27 | 59% | +36 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 50% |
| Tue | 3 | 33% |
| Wed | 5 | 80% |
| Thu | 3 | 67% |
| Fri | 4 | 75% |
| Sat | 4 | 50% |
| Sun | 4 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…