Historical on-time performance
Sitka to Seattle
862 miData through May 2026Source: US DOT · BTS
Flights on SIT–SEA arrive on time 62% of the time over the last 12 months.
On-time rate62%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.8%of scheduled flights
based on 240 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Alaska AirlinesOn-time62%Median5 minp9050 minCancel0.8%Flights240
Why flights run late
Delay causes
- Airline18%
- Weather1%
- Air traffic (NAS)18%
- Late aircraft53%
- Security11%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline50%
- Weather50%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 2 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SIT → SEA
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 80% on time.
- Mornings80% on time · p90 30 min · 479 flights
- Middays67% on time · p90 45 min · 422 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 77% on time.
- Thursdays77% on time · p90 50 min · 129 flights · limited
- Tuesdays76% on time · p90 25 min · 125 flights · limited
- Saturdays75% on time · p90 35 min · 131 flights · limited
- Mondays74% on time · p90 30 min · 128 flights · limited
- Fridays73% on time · p90 45 min · 131 flights · limited
- Wednesdays71% on time · p90 45 min · 126 flights · limited
- Sundays69% on time · p90 40 min · 131 flights · limited
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