Flight OddsAS371 SEA → PHL
Alaska Airlines · Seattle, WA to Philadelphia, PA · 154 flights observed, 2025-10-26 to 2026-06-09 · 2,379 mi
AS371 covers more than one route in the data window — the stats below are for SEA → PHL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
90%
Median delay
-11 min
90th percentile
+16 min
Cancellation rate
0%
How often is AS371 on time?
Across 154 flights on SEA → PHL from 2025-10-26 to 2026-06-09, AS371 arrived within 15 minutes of schedule 90% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +16 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 138 | 90% |
| 16-30 min | 5 | 3% |
| 31-60 min | 8 | 5% |
| 61-120 min | 3 | 2% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 100% | -8 min |
| 2025-11 | 28 | 89% | -6 min |
| 2025-12 | 31 | 81% | +0 min |
| 2026-01 | 5 | 80% | +9 min |
| 2026-03 | 14 | 93% | -14 min |
| 2026-04 | 30 | 97% | -9 min |
| 2026-05 | 31 | 90% | -11 min |
| 2026-06 | 9 | 89% | -3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 23 | 100% |
| Tue | 22 | 95% |
| Wed | 22 | 91% |
| Thu | 21 | 81% |
| Fri | 22 | 82% |
| Sat | 21 | 90% |
| Sun | 23 | 87% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…