Flight OddsAA3811 ORD → BUF
American Airlines · Chicago, IL to Buffalo, NY · 30 flights observed, 2025-09-05 to 2025-10-05 · 474 mi
AA3811 covers more than one route in the data window — the stats below are for ORD → BUF, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
83%
Median delay
0 min
90th percentile
+20 min
Cancellation rate
3%
How often is AA3811 on time?
Across 30 flights on ORD → BUF from 2025-09-05 to 2025-10-05, AA3811 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was 0 min, and the worst 10% of flights arrived +20 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 | 24 | 83% |
| 16-30 min | 4 | 14% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-09 | 24 | 88% | +6 min |
| 2025-10 | 5 | 60% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 75% |
| Tue | 4 | 100% |
| Wed | 4 | 100% |
| Thu | 4 | 100% |
| Fri | 5 | 80% |
| Sat | 3 | 67% |
| Sun | 5 | 60% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…