Flight OddsAA3500 ORD → BOS
American Airlines · Chicago, IL to Boston, MA · 25 flights observed, 2026-02-12 to 2026-04-04 · 867 mi
AA3500 covers more than one route in the data window — the stats below are for ORD → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
79%
Median delay
-2 min
90th percentile
+56 min
Cancellation rate
4%
How often is AA3500 on time?
Across 25 flights on ORD → BOS from 2026-02-12 to 2026-04-04, AA3500 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +56 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 | 19 | 79% |
| 16-30 min | 2 | 8% |
| 31-60 min | 0 | 0% |
| 61-120 min | 2 | 8% |
| 2+ hrs | 1 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-02 | 14 | 79% | +17 min |
| 2026-03 | 9 | 89% | +4 min |
| 2026-04 | 1 | 0% | +24 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 2 | 100% |
| Tue | 3 | 67% |
| Wed | 3 | 100% |
| Thu | 4 | 100% |
| Fri | 4 | 50% |
| Sat | 8 | 75% |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…