Flight OddsAA4640 ORD → MDT
American Airlines · Chicago, IL to Harrisburg, PA · 41 flights observed, 2026-05-21 to 2026-06-30 · 594 mi
AA4640 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
87%
Median delay
-17 min
90th percentile
+21 min
Cancellation rate
7%
How often is AA4640 on time?
Across 41 flights on ORD → MDT from 2026-05-21 to 2026-06-30, AA4640 arrived within 15 minutes of schedule 87% of the time. The median arrival delay was -17 min, and the worst 10% of flights arrived +21 min or later. 7% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 33 | 87% |
| 16-30 min | 1 | 3% |
| 31-60 min | 2 | 5% |
| 61-120 min | 2 | 5% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-05 | 11 | 100% | -24 min |
| 2026-06 | 27 | 81% | -4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 100% |
| Tue | 6 | 83% |
| Wed | 4 | 50% |
| Thu | 5 | 80% |
| Fri | 6 | 83% |
| Sat | 6 | 100% |
| Sun | 6 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…