KTN to SEA flight delays & on-time performance
Nonstop flights from Ketchikan International Airport to Seattle–Tacoma International Airport · 680 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at KTN or SEA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Ketchikan (KTN) to Seattle (SEA) arrived on time 84% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 2.6% were cancelled, and 5% arrived an hour or more late.
- Alaska Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 8am did best (89% on time); around 11am did worst (69%).
- Thursday was the most reliable day to fly (89% on time) and Monday the least (79%).
- The largest source of delay minutes was late-arriving aircraft (66%).
Which airline is most on time from KTN to SEA?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Alaska Airlines | 84% | 2.6% | 12 min | 5.4% | 1,304 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am89%48 flights
- 9am83%314 flights
- 11am69%64 flights
- 12pm86%253 flights
- 1pm88%168 flights
- 2pm92%24 flights
- 4pm72%71 flights
- 5pm86%362 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday79%2.2% cancelled
- Tuesday88%3.8% cancelled
- Wednesday84%0.0% cancelled
- Thursday89%2.2% cancelled
- Friday83%1.6% cancelled
- Saturday82%3.2% cancelled
- Sunday84%5.4% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft66%
- Airline (crew, maintenance, cleaning, fueling)22%
- Air traffic control & airport congestion9%
- Extreme weather2%
- Security1%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather68%
- Airline (crew, maintenance, cleaning, fueling)32%
- Air traffic control & airport congestion0%
- Security0%
KTN to SEA: common questions
- How often are KTN to SEA flights on time?
- 84% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Ketchikan to Seattle cancelled?
- 2.6% of scheduled flights were cancelled (34 of 1,304).
- How long are typical delays?
- Across all flights the average arrival delay was 12 min (early arrivals count as zero). Flights that were late arrived 69 min behind schedule on average, and 5.4% of flights were an hour or more late.
- How long is taxi time at KTN?
- Flights on this route spent 10 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SEA to KTN — 78% on time
More flights from Ketchikan
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: KTN → SEA, nonstop flights by US airlines that report to the DOT. How we calculate this.