Flight OddsAA3711 BOS → ORD
American Airlines · Boston, MA to Chicago, IL · 216 flights observed, 2025-07-01 to 2026-06-30 · 867 mi
AA3711 covers more than one route in the data window — the stats below are for BOS → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
79%
Median delay
-12 min
90th percentile
+70 min
Cancellation rate
3%
How often is AA3711 on time?
Across 216 flights on BOS → ORD from 2025-07-01 to 2026-06-30, AA3711 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +70 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 | 162 | 79% |
| 16-30 min | 9 | 4% |
| 31-60 min | 11 | 5% |
| 61-120 min | 16 | 8% |
| 2+ hrs | 8 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 28 | 71% | +7 min |
| 2025-08 | 30 | 77% | +2 min |
| 2025-09 | 30 | 87% | -3 min |
| 2025-10 | 31 | 77% | +12 min |
| 2025-11 | 1 | 100% | -21 min |
| 2026-02 | 14 | 86% | +2 min |
| 2026-03 | 29 | 76% | +7 min |
| 2026-04 | 5 | 60% | +20 min |
| 2026-05 | 11 | 73% | +7 min |
| 2026-06 | 27 | 85% | +17 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 29 | 97% |
| Tue | 30 | 80% |
| Wed | 29 | 76% |
| Thu | 29 | 69% |
| Fri | 32 | 72% |
| Sat | 32 | 78% |
| Sun | 25 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…