Flight OddsAA3879 BUF → ORD
American Airlines · Buffalo, NY to Chicago, IL · 54 flights observed, 2025-07-02 to 2025-10-05 · 474 mi
AA3879 covers more than one route in the data window — the stats below are for BUF → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
50%
Median delay
+14 min
90th percentile
+66 min
Cancellation rate
4%
How often is AA3879 on time?
Across 54 flights on BUF → ORD from 2025-07-02 to 2025-10-05, AA3879 arrived within 15 minutes of schedule 50% of the time. The median arrival delay was +14 min, and the worst 10% of flights arrived +66 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 26 | 50% |
| 16-30 min | 10 | 19% |
| 31-60 min | 9 | 17% |
| 61-120 min | 5 | 10% |
| 2+ hrs | 2 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 20 | 65% | +17 min |
| 2025-08 | 3 | 0% | +58 min |
| 2025-09 | 24 | 46% | +24 min |
| 2025-10 | 5 | 40% | +26 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 9 | 33% |
| Tue | 4 | 25% |
| Wed | 9 | 56% |
| Thu | 9 | 67% |
| Fri | 9 | 44% |
| Sat | 3 | 33% |
| Sun | 9 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…