Flight profile · Alaska Airlines
AS91
Seattle (SEA) to Sitka (SIT) · scheduled 9:15 PM – 10:59 PM
How AS91 performs
309 operations, 2023-07-01 to 2026-06-30.
AS91 arrived on time 67.2% of the time, against 65.3% for all SEA → SIT flights — this specific departure is 1.9 percentage points better than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 309 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AS91 | 67.2% | 0.32% | 1 min | 8.5% | 309 |
| Alaska Airlines on SEA → SIT | 66.9% | 0.14% | 3 min | 7.0% | 730 |
| All SEA → SIT flights | 65.3% | 0.56% | 4 min | 8.1% | 889 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
Other routes AS91 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 |
|---|---|---|---|
| OGG→LAX Kahului to Los Angeles | 2026-03-18 – 2026-04-21 | 35 | — |
| ANC→HNL Anchorage to Honolulu | 2025-11-21 – 2026-03-16 | 95 | 71.6% |
| ANC→FAI Anchorage to Fairbanks | 2023-10-01 – 2025-11-20 | 249 | 83.4% |
| ANC→LAS Anchorage to Las Vegas | 2025-10-25 – 2025-10-25 | 1 | — |
| ANC→JNU Anchorage to Juneau | 2025-08-20 – 2025-10-01 | 19 | — |
| ANC→ADQ Anchorage to Kodiak | 2025-02-14 – 2025-03-14 | 5 | — |
| JFK→PDX New York to Portland | 2024-10-26 – 2024-10-26 | 1 | — |
| DLG→ANC Dillingham to Anchorage | 2023-09-09 – 2023-09-30 | 7 | — |
Because the same number has served different journeys, the statistics above describe only the route AS91 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 309 records of AS91 operating SEA → SIT, 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.