Best Time to Fly SEA to KTN: On-Time Stats by Hour & Airline
Seattle/Tacoma International → Ketchikan International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 78.3% of Seattle (SEA) to Ketchikan (KTN) flights arrived on time (1,303 scheduled flights). That is 0.7 points above the national average of 77.6%.
Alaska Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Monday was the most reliable day (79% on time) and December the worst month (67%).
The cancellation rate was 0.1% (US average 1.8%).
SEA to KTN 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 | 78.3% | 54 min | 0.1% | 1,303 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SEA to KTN
On-time arrival % by scheduled departure hour (local time), 2,641 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 83.3% | 0.0% | 61 |
| 7am–8am | 82.1% | 0.0% | 639 |
| 8am–9am | Limited data | 23 | |
| 9am–10am | 66.5% | 0.6% | 165 |
| 10am–11am | 76.9% | 0.0% | 52 |
| 11am–12pm | 63.0% | 1.1% | 95 |
| 1pm–2pm | 73.1% | 0.0% | 52 |
| 2pm–3pm | 67.7% | 0.0% | 102 |
| 3pm–4pm | 69.1% | 0.4% | 728 |
| 6pm–7pm | 82.4% | 0.0% | 724 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SEA to KTN
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 80.6% | +3.3 pts | 0.0% | 38 |
| Christmas & New Year (Dec 20 - Jan 3) | 61.5% | -15.7 pts | 1.2% | 82 |
| Summer peak (Jun 15 - Aug 15) | 73.8% | -3.4 pts | 0.3% | 635 |
| All other days | 77.3% | — | 0.1% | 1,886 |
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).