Flight OddsAA4004 ORD → MDT
American Airlines · Chicago, IL to Harrisburg, PA · 27 flights observed, 2025-10-06 to 2025-11-01 · 594 mi
AA4004 covers more than one route in the data window — the stats below are for ORD → MDT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
74%
Median delay
+2 min
90th percentile
+42 min
Cancellation rate
0%
How often is AA4004 on time?
Across 27 flights on ORD → MDT from 2025-10-06 to 2025-11-01, AA4004 arrived within 15 minutes of schedule 74% of the time. The median arrival delay was +2 min, and the worst 10% of flights arrived +42 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 | 20 | 74% |
| 16-30 min | 1 | 4% |
| 31-60 min | 4 | 15% |
| 61-120 min | 2 | 7% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 26 | 77% | +9 min |
| 2025-11 | 1 | 0% | +33 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 100% |
| Tue | 4 | 75% |
| Wed | 4 | 75% |
| Thu | 4 | 75% |
| Fri | 4 | 100% |
| Sat | 4 | 25% |
| Sun | 3 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…