Flight OddsAS1321 SEA → STS
Alaska Airlines · Seattle, WA to Santa Rosa, CA · 256 flights observed, 2025-07-01 to 2026-06-30 · 618 mi
AS1321 covers more than one route in the data window — the stats below are for SEA → STS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
81%
Median delay
-7 min
90th percentile
+34 min
Cancellation rate
1%
How often is AS1321 on time?
Across 256 flights on SEA → STS from 2025-07-01 to 2026-06-30, AS1321 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +34 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 | 203 | 81% |
| 16-30 min | 20 | 8% |
| 31-60 min | 19 | 8% |
| 61-120 min | 7 | 3% |
| 2+ hrs | 3 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 63% | +11 min |
| 2025-08 | 29 | 72% | +18 min |
| 2025-09 | 29 | 76% | +6 min |
| 2025-10 | 31 | 90% | -5 min |
| 2025-11 | 30 | 97% | -8 min |
| 2025-12 | 27 | 56% | +13 min |
| 2026-01 | 6 | 50% | +8 min |
| 2026-04 | 9 | 100% | -24 min |
| 2026-05 | 31 | 100% | -16 min |
| 2026-06 | 30 | 87% | +2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 37 | 84% |
| Tue | 38 | 84% |
| Wed | 36 | 78% |
| Thu | 37 | 84% |
| Fri | 33 | 76% |
| Sat | 36 | 75% |
| Sun | 35 | 83% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…