Flight OddsSTL → BOS American Airlines
American Airlines · St. Louis, MO to Boston, MA · 676 flights, 2025-07-01 to 2026-06-30 · aggregated across 15 flight numbers
On-time arrival
76%
Median delay
-10 min
90th percentile
+58 min
Cancellation rate
2%
How on-time is American Airlines from STL to BOS?
Across every American Airlines flight number on STL → BOS (676 flights, 2025-07-01 to 2026-06-30), 76% arrived within 15 minutes of schedule. Median arrival delay -10 min; the worst 10% ran +58 min or later. 2% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 504 | 76% |
| 16-30 min | 42 | 6% |
| 31-60 min | 50 | 8% |
| 61-120 min | 33 | 5% |
| 2+ hrs | 32 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 56 | 79% | +10 min |
| 2025-08 | 56 | 89% | -4 min |
| 2025-09 | 55 | 84% | +1 min |
| 2025-10 | 58 | 59% | +26 min |
| 2025-11 | 53 | 81% | +2 min |
| 2025-12 | 56 | 80% | +10 min |
| 2026-01 | 52 | 81% | -7 min |
| 2026-02 | 48 | 81% | +2 min |
| 2026-03 | 56 | 68% | +10 min |
| 2026-04 | 58 | 72% | +11 min |
| 2026-05 | 58 | 67% | +22 min |
| 2026-06 | 55 | 76% | +23 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 101 | 73% |
| Tue | 105 | 82% |
| Wed | 103 | 78% |
| Thu | 99 | 66% |
| Fri | 102 | 82% |
| Sat | 56 | 80% |
| Sun | 95 | 74% |
AA flight numbers on STL → BOS
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…