Flight profile · Alaska Airlines
AS1321
Seattle (SEA) to Santa Rosa (STS) · scheduled 5:08 PM – 1:36 PM
How AS1321 performs
436 operations, 2023-07-15 to 2026-06-30.
AS1321 arrived on time 77.1% of the time, against 78.5% for all SEA → STS flights — this specific departure is 1.4 percentage points worse than the route as a whole. Against Alaska Airlines’s own flights on this route it is 3.8 points worse.
Source: US DOT Bureau of Transportation Statistics · 436 operations between 2023-07-15 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AS1321 | 77.1% | 0.69% | -5 min | 5.3% | 436 |
| Alaska Airlines on SEA → STS | 80.9% | 1.16% | -5 min | 4.1% | 947 |
| All SEA → STS flights | 78.5% | 0.87% | -3 min | 5.2% | 1,377 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-15 to 2026-06-30
Other routes AS1321 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| STS→SEA Santa Rosa to Seattle | 2025-04-24 – 2026-06-09 | 158 | 49.0% |
Because the same number has served different journeys, the statistics above describe only the route AS1321 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 436 records of AS1321 operating SEA → STS, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.