Flight OddsORD → BOS American Airlines
American Airlines · Chicago, IL to Boston, MA · 3,115 flights, 2025-07-01 to 2026-06-30 · aggregated across 94 flight numbers
On-time arrival
66%
Median delay
-1 min
90th percentile
+82 min
Cancellation rate
3%
How on-time is American Airlines from ORD to BOS?
Across every American Airlines flight number on ORD → BOS (3,115 flights, 2025-07-01 to 2026-06-30), 66% arrived within 15 minutes of schedule. Median arrival delay -1 min; the worst 10% ran +82 min or later. 3% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,974 | 66% |
| 16-30 min | 278 | 9% |
| 31-60 min | 301 | 10% |
| 61-120 min | 298 | 10% |
| 2+ hrs | 159 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 257 | 63% | +19 min |
| 2025-08 | 266 | 69% | +19 min |
| 2025-09 | 260 | 60% | +22 min |
| 2025-10 | 267 | 57% | +27 min |
| 2025-11 | 228 | 79% | +4 min |
| 2025-12 | 231 | 65% | +19 min |
| 2026-01 | 190 | 67% | +16 min |
| 2026-02 | 211 | 63% | +26 min |
| 2026-03 | 232 | 64% | +26 min |
| 2026-04 | 277 | 66% | +16 min |
| 2026-05 | 299 | 72% | +13 min |
| 2026-06 | 292 | 64% | +24 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 431 | 61% |
| Tue | 441 | 71% |
| Wed | 433 | 67% |
| Thu | 424 | 65% |
| Fri | 436 | 62% |
| Sat | 408 | 73% |
| Sun | 437 | 61% |
AA flight numbers on ORD → BOS
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…