Flight OddsAA1578 BOS → LAX
American Airlines · Boston, MA to Los Angeles, CA · 198 flights observed, 2025-07-01 to 2026-06-30 · 2,611 mi
AA1578 covers more than one route in the data window — the stats below are for BOS → LAX, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
64%
Median delay
+3 min
90th percentile
+83 min
Cancellation rate
1%
How often is AA1578 on time?
Across 198 flights on BOS → LAX from 2025-07-01 to 2026-06-30, AA1578 arrived within 15 minutes of schedule 64% of the time. The median arrival delay was +3 min, and the worst 10% of flights arrived +83 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 127 | 64% |
| 16-30 min | 16 | 8% |
| 31-60 min | 26 | 13% |
| 61-120 min | 16 | 8% |
| 2+ hrs | 12 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 39% | +69 min |
| 2025-08 | 31 | 71% | +2 min |
| 2025-09 | 29 | 55% | +53 min |
| 2025-10 | 27 | 48% | +53 min |
| 2026-04 | 22 | 95% | -9 min |
| 2026-05 | 29 | 79% | 0 min |
| 2026-06 | 28 | 71% | +5 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 29 | 69% |
| Tue | 30 | 63% |
| Wed | 28 | 71% |
| Thu | 29 | 59% |
| Fri | 28 | 57% |
| Sat | 26 | 77% |
| Sun | 27 | 56% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…