Flight OddsAA4121 GRB → ORD
American Airlines · Green Bay, WI to Chicago, IL · 59 flights observed, 2025-09-04 to 2025-11-01 · 173 mi
AA4121 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
88%
Median delay
-15 min
90th percentile
+17 min
Cancellation rate
0%
How often is AA4121 on time?
Across 59 flights on GRB → ORD from 2025-09-04 to 2025-11-01, AA4121 arrived within 15 minutes of schedule 88% of the time. The median arrival delay was -15 min, and the worst 10% of flights arrived +17 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 | 52 | 88% |
| 16-30 min | 5 | 8% |
| 31-60 min | 1 | 2% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 1 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-09 | 27 | 93% | -7 min |
| 2025-10 | 31 | 84% | -9 min |
| 2025-11 | 1 | 100% | -5 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 75% |
| Tue | 8 | 100% |
| Wed | 8 | 88% |
| Thu | 9 | 100% |
| Fri | 9 | 78% |
| Sat | 9 | 78% |
| Sun | 8 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…