Flight OddsUA4420 ORD → GRB
United Airlines · Chicago, IL to Green Bay, WI · 84 flights observed, 2025-12-02 to 2026-05-30 · 173 mi
UA4420 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
66%
Median delay
0 min
90th percentile
+105 min
Cancellation rate
1%
How often is UA4420 on time?
Across 84 flights on ORD → GRB from 2025-12-02 to 2026-05-30, UA4420 arrived within 15 minutes of schedule 66% of the time. The median arrival delay was 0 min, and the worst 10% of flights arrived +105 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 55 | 66% |
| 16-30 min | 7 | 8% |
| 31-60 min | 7 | 8% |
| 61-120 min | 7 | 8% |
| 2+ hrs | 7 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 15 | 47% | +32 min |
| 2026-01 | 27 | 52% | +86 min |
| 2026-02 | 28 | 82% | +6 min |
| 2026-03 | 3 | 100% | -3 min |
| 2026-05 | 10 | 80% | -2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 12 | 75% |
| Tue | 13 | 62% |
| Wed | 12 | 67% |
| Thu | 12 | 67% |
| Fri | 12 | 50% |
| Sat | 12 | 75% |
| Sun | 10 | 70% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…