Ketchikan (KTN) to Seattle (SEA): On-Time Performance
Data through May 2026
Ketchikan (KTN) to Seattle (SEA) effectively runs on two schedules. In May 2026, 96% of arrivals were on time; in August 2024 that fell to 70% — a 26-point seasonal swing. Across the full period the route averages 84% on-time against a national 78%.
- On-time
- 84%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 2.3%
- Flights/day
- 3.6
- last 12 months
- Duration
- 1h 58m
- scheduled
- Distance
- 680 mi
Best airline from KTN to SEA
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Alaska Airlinesmost reliable | 85% | 11 min | 2.3% | 2,599 |
| SkyWest Airlines | 51% | 33 min | 2.1% | 94 |
Monthly on-time trend
Best time to fly from KTN to SEA
Aim for departures around 12 p.m. (88% on-time); avoid 11 a.m. departures (71%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 82% | 14 min |
| Tuesday | 86% | 12 min |
| Wednesday | 84% | 11 min |
| Thursdaybest | 88% | 8 min |
| Friday | 83% | 12 min |
| Saturday | 81% | 14 min |
| Sunday | 83% | 12 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft62%
- Airline operations24%
- National airspace system9%
- Weather3%
- Security2%
Frequently asked questions
- How often are flights from KTN to SEA delayed?
- 16% of KTN–SEA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 12 minutes.
- Which airline is most reliable from KTN to SEA?
- Alaska Airlines has the best on-time record on this route at 85%, based on 2,599 flights. 2 airlines flew KTN–SEA frequently enough to compare in this period.
- What is the best time of day to fly from KTN to SEA?
- Departures around 12 p.m. have the best record (88% on-time), while departures around 11 a.m. have the worst (71%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from KTN to SEA?
- The scheduled KTN–SEA flight time averages 1h 58m over 680 miles. Actual arrival times vary — flights on this route land 15+ minutes late 16% of the time.
- How often are KTN to SEA flights cancelled?
- 2.3% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What is the worst month to fly from KTN to SEA?
- August 2024 was the roughest month in this dataset, with only 70% of arrivals on time. The best was May 2026 at 96%. If your dates are flexible, that 26-point gap is worth planning around.
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Based on 2,693 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.