Flight OddsAA3867 STL → BOS
American Airlines · St. Louis, MO to Boston, MA · 26 flights observed, 2026-03-08 to 2026-04-06 · 1,047 mi
AA3867 covers more than one route in the data window — the stats below are for STL → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
64%
Median delay
-9 min
90th percentile
+131 min
Cancellation rate
4%
How often is AA3867 on time?
Across 26 flights on STL → BOS from 2026-03-08 to 2026-04-06, AA3867 arrived within 15 minutes of schedule 64% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +131 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 | 16 | 64% |
| 16-30 min | 1 | 4% |
| 31-60 min | 4 | 16% |
| 61-120 min | 1 | 4% |
| 2+ hrs | 3 | 12% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 20 | 65% | +20 min |
| 2026-04 | 5 | 60% | +25 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 40% |
| Tue | 4 | 75% |
| Wed | 4 | 50% |
| Thu | 4 | 75% |
| Fri | 4 | 100% |
| Sat | No data | — |
| Sun | 4 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…