Flight OddsAA3521 ORD → IAH
American Airlines · Chicago, IL to Houston, TX · 34 flights observed, 2026-04-09 to 2026-05-20 · 925 mi
AA3521 covers more than one route in the data window — the stats below are for ORD → IAH, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
82%
Median delay
-4 min
90th percentile
+24 min
Cancellation rate
0%
How often is AA3521 on time?
Across 34 flights on ORD → IAH from 2026-04-09 to 2026-05-20, AA3521 arrived within 15 minutes of schedule 82% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +24 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 | 28 | 82% |
| 16-30 min | 3 | 9% |
| 31-60 min | 0 | 0% |
| 61-120 min | 3 | 9% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-04 | 15 | 93% | +1 min |
| 2026-05 | 19 | 74% | +4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 100% |
| Tue | 2 | 100% |
| Wed | 6 | 83% |
| Thu | 6 | 67% |
| Fri | 6 | 67% |
| Sat | 3 | 100% |
| Sun | 6 | 83% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…