BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
SEA→KTN

Seattle, WA (SEA) to Ketchikan, AK (KTN) flight delay odds

75.4% of 1,303 official scheduled SEA-to-KTN flights arrived on time; 13.7% arrived at least 30 minutes late and 0.2% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
75.4%arrived on time
13.7%30+ min late
0.2%cancelled
1,303scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.1%all scheduled flights
120+ minutes late2.6%all scheduled flights
Diverted1.7%did not reach as scheduled
Average arrival+6.0 mincompleted flights

Which departure time was most reliable for SEA to KTN?

Among qualifying SEA-to-KTN departure window results, Early morning had the highest on-time rate: 84.2% of 361 flights. Afternoon was lowest at 65.5% across 435 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning36184.2%7.5%0.0%
Late morning14571.7%18.6%0.7%
Afternoon43565.5%19.3%0.5%
Evening36280.1%11.0%0.0%

Which weekday was most reliable for SEA to KTN?

Among qualifying SEA-to-KTN weekday results, Wednesday had the highest on-time rate: 78.6% of 187 flights. Friday was lowest at 70.6% across 187 flights.

DayFlightsOn time30+ minCancelled
Monday18674.7%14.0%0.5%
Tuesday19178.0%12.6%0.0%
Wednesday18778.6%11.2%0.0%
Thursday18172.4%13.3%0.6%
Friday18770.6%17.1%0.5%
Saturday18678.5%12.4%0.0%
Sunday18575.1%15.1%0.0%

Which airline was most reliable for SEA to KTN?

Only Alaska Airlines met the SEA-to-KTN airline threshold: 75.4% of 1,303 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines1,30375.4%13.7%0.2%

Which month was most reliable for SEA to KTN?

Among qualifying SEA-to-KTN month results, May 2026 had the highest on-time rate: 84.8% of 112 flights. December 2025 was lowest at 54.9% across 91 flights.

MonthFlightsOn time30+ minCancelled
July 202515565.2%20.6%0.6%
August 202514374.1%16.1%0.0%
September 202512083.3%8.3%0.0%
October 20259678.1%9.4%0.0%
November 20258780.5%10.3%0.0%
December 20259154.9%24.2%1.1%
January 20269171.4%13.2%0.0%
February 20268479.8%11.9%0.0%
March 20269373.1%15.1%0.0%
April 20269082.2%11.1%0.0%
May 202611284.8%8.0%0.9%
June 202614179.4%12.8%0.0%

What drove SEA to KTN delay minutes?

Airline was the largest recorded SEA-to-KTN delay category, accounting for 61.1% of 16,921 BTS-attributed delay minutes during July 2025–June 2026.

Airline61.1%
Late aircraft22.2%
National airspace13.6%
Weather3.0%
Security0.1%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.