Flight OddsAA4504 ORD → PWM
American Airlines · Chicago, IL to Portland, ME · 28 flights observed, 2025-08-06 to 2025-09-02 · 900 mi
AA4504 covers more than one route in the data window — the stats below are for ORD → PWM, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
69%
Median delay
-11 min
90th percentile
+58 min
Cancellation rate
7%
How often is AA4504 on time?
Across 28 flights on ORD → PWM from 2025-08-06 to 2025-09-02, AA4504 arrived within 15 minutes of schedule 69% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +58 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 | 18 | 69% |
| 16-30 min | 1 | 4% |
| 31-60 min | 4 | 15% |
| 61-120 min | 2 | 8% |
| 2+ hrs | 1 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 24 | 71% | +13 min |
| 2025-09 | 2 | 50% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 67% |
| Tue | 4 | 50% |
| Wed | 4 | 50% |
| Thu | 4 | 75% |
| Fri | 4 | 100% |
| Sat | 3 | 100% |
| Sun | 4 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…