Historical on-time performance
Seattle to San Luis Obispo
847 miData through Dec 2025Source: US DOT · BTS
Flights on SEA–SBP arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.3%of scheduled flights
based on 307 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Alaska AirlinesOn-time77%Medianon timep9035 minCancel0.3%Flights307
Why flights run late
Delay causes
- Airline44%
- Weather1%
- Air traffic (NAS)9%
- Late aircraft47%
- Security0%
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 → SBP
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 71% to 86% on time.
- Mornings86% on time · p90 30 min · 63 flights · limited
- Middays82% on time · p90 20 min · 405 flights
- Afternoons80% on time · p90 35 min · 413 flights
- Evenings71% on time · p90 30 min · 112 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 89% on time.
- Tuesdays89% on time · p90 15 min · 140 flights · limited
- Wednesdays82% on time · p90 20 min · 142 flights · limited
- Sundays79% on time · p90 40 min · 147 flights · limited
- Thursdays78% on time · p90 20 min · 146 flights · limited
- Fridays77% on time · p90 25 min · 146 flights · limited
- Mondays77% on time · p90 30 min · 144 flights · limited
- Saturdays76% on time · p90 50 min · 136 flights · limited
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