Seattle (SEA) to Sitka (SIT): On-Time Performance
Data through July 2026
Seattle (SEA) to Sitka (SIT) is a thinner route than most in this dataset — 243 departures over the past year, roughly 5 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 65% arrived on time, noticeably below the national average of 78%.
- On-time
- 65%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 0.7%
- Flights/day
- 0.67
- last 12 months
- Duration
- 2h 29m
- scheduled
- Distance
- 861 mi
Best airline from SEA to SIT
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Alaska Airlinesmost reliable | 66% | 18 min | 0.2% | 541 |
| SkyWest Airlines | 56% | 26 min | 4.3% | 69 |
Monthly on-time trend
Best time to fly from SEA to SIT
Aim for departures around 9 p.m. (69% on-time); avoid 5 p.m. departures (56%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 63% | 20 min |
| Tuesdaybest | 73% | 14 min |
| Wednesday | 61% | 21 min |
| Thursday | 61% | 19 min |
| Friday | 68% | 16 min |
| Saturday | 67% | 19 min |
| Sunday | 62% | 21 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft36%
- Airline operations37%
- National airspace system18%
- Weather7%
- Security1%
Frequently asked questions
- How often are flights from SEA to SIT delayed?
- 35% of SEA–SIT flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 19 minutes.
- Which airline is most reliable from SEA to SIT?
- Alaska Airlines has the best on-time record on this route at 66%, based on 541 flights. 2 airlines flew SEA–SIT frequently enough to compare in this period.
- What is the best time of day to fly from SEA to SIT?
- Departures around 9 p.m. have the best record (69% on-time), while departures around 5 p.m. have the worst (56%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SEA to SIT?
- The scheduled SEA–SIT flight time averages 2h 29m over 861 miles. Actual arrival times vary — flights on this route land 15+ minutes late 35% of the time.
- How often are SEA to SIT flights cancelled?
- 0.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What day of the week is most reliable for SEA to SIT?
- Tuesday flights have the best record at 73% on-time. Day-of-week differences on this route are meaningful — Thursday trails at 61%.
Explore related pages
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Related guides
Based on 610 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.