Historical on-time performance
Seattle to Sitka
861 miData through Dec 2025Source: US DOT · BTS
Flights on SEA–SIT arrive on time 60% of the time over the last 12 months.
On-time rate60%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights
based on 236 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Alaska AirlinesOn-time60%Median5 minp9060 minCancel0.4%Flights236
Why flights run late
Delay causes
- Airline28%
- Weather0%
- Air traffic (NAS)22%
- Late aircraft49%
- Security1%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SEA → SIT
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 57% to 67% on time.
- Middays67% on time · p90 45 min · 416 flights
- Overnights66% on time · p90 55 min · 276 flights
- Evenings57% on time · p90 70 min · 185 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 61% to 71% on time.
- Tuesdays71% on time · p90 35 min · 122 flights · limited
- Mondays66% on time · p90 45 min · 125 flights · limited
- Thursdays65% on time · p90 60 min · 127 flights · limited
- Saturdays64% on time · p90 55 min · 127 flights · limited
- Wednesdays63% on time · p90 55 min · 122 flights · limited
- Sundays63% on time · p90 65 min · 126 flights · limited
- Fridays61% on time · p90 45 min · 128 flights · limited
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