Flight OddsAA4156 GRB → ORD
American Airlines · Green Bay, WI to Chicago, IL · 27 flights observed, 2025-08-06 to 2025-09-02 · 173 mi
AA4156 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
81%
Median delay
-1 min
90th percentile
+99 min
Cancellation rate
4%
How often is AA4156 on time?
Across 27 flights on GRB → ORD from 2025-08-06 to 2025-09-02, AA4156 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +99 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 21 | 81% |
| 16-30 min | 0 | 0% |
| 31-60 min | 0 | 0% |
| 61-120 min | 2 | 8% |
| 2+ hrs | 3 | 12% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 24 | 79% | +34 min |
| 2025-09 | 2 | 100% | -9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 100% |
| Tue | 3 | 67% |
| Wed | 4 | 100% |
| Thu | 4 | 75% |
| Fri | 4 | 75% |
| Sat | 4 | 75% |
| Sun | 4 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…