Flight OddsAA4591 IAH → ORD
American Airlines · Houston, TX to Chicago, IL · 67 flights observed, 2025-07-06 to 2025-10-25 · 925 mi
AA4591 covers more than one route in the data window — the stats below are for IAH → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
67%
Median delay
-3 min
90th percentile
+89 min
Cancellation rate
3%
How often is AA4591 on time?
Across 67 flights on IAH → ORD from 2025-07-06 to 2025-10-25, AA4591 arrived within 15 minutes of schedule 67% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +89 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 43 | 67% |
| 16-30 min | 5 | 8% |
| 31-60 min | 3 | 5% |
| 61-120 min | 7 | 11% |
| 2+ hrs | 6 | 9% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 13 | 46% | +50 min |
| 2025-08 | 25 | 64% | +21 min |
| 2025-09 | 5 | 80% | +30 min |
| 2025-10 | 21 | 81% | +4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 11 | 91% |
| Tue | 5 | 60% |
| Wed | 7 | 100% |
| Thu | 10 | 40% |
| Fri | 10 | 70% |
| Sat | 10 | 60% |
| Sun | 11 | 55% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…