Best Time to Fly SIT to SEA: On-Time Stats by Hour & Airline
Sitka Rocky Gutierrez → Seattle/Tacoma International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 73.8% of Sitka (SIT) to Seattle (SEA) flights arrived on time (244 scheduled flights). That is 3.9 points below the national average of 77.6%.
Alaska Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Saturday was the most reliable day (79% on time) and August the worst month (59%).
The cancellation rate was 0.8% (US average 1.8%).
SIT to SEA on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Alaska Airlines | 73.8% | 55 min | 0.8% | 244 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SIT to SEA
On-time arrival % by scheduled departure hour (local time), 519 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 73.0% | 5.1% | 39 |
| 7am–8am | 81.3% | 1.0% | 196 |
| 11am–12pm | Limited data | 1 | |
| 1pm–2pm | 58.6% | 0.9% | 231 |
| 2pm–3pm | 78.4% | 1.9% | 52 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SIT to SEA
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Summer peak (Jun 15 - Aug 15) | 65.9% | -8.6 pts | 1.9% | 263 |
| All other days | 74.5% | — | 0.8% | 256 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).