Historical on-time performance
Phoenix to San Luis Obispo
509 miData through Dec 2025Source: US DOT · BTS
Flights on PHX–SBP arrive on time 83% of the time over the last 12 months.
On-time rate83%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights
based on 1,040 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- SkyWest AirlinesOn-time84%Medianon timep9030 minCancel0.3%Flights320
- American AirlinesOn-time80%Medianon timep9040 minCancel0.5%Flights393
- Envoy AirOn-time86%Medianon timep9020 minCancel0.9%Flights327
Why flights run late
Delay causes
- Airline42%
- Weather1%
- Air traffic (NAS)8%
- Late aircraft48%
- 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 PHX → SBP
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Evenings are the most reliable time of day to fly this route — 89% on time.
- Evenings89% on time · p90 10 min · 539 flights
- Middays86% on time · p90 25 min · 1,156 flights
- Mornings82% on time · p90 25 min · 157 flights · limited
- Afternoons80% on time · p90 35 min · 1,040 flights
- Overnights73% on time · p90 50 min · 572 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 80% to 86% on time.
- Tuesdays86% on time · p90 20 min · 451 flights
- Saturdays83% on time · p90 35 min · 477 flights
- Thursdays83% on time · p90 35 min · 518 flights
- Wednesdays82% on time · p90 35 min · 475 flights
- Sundays81% on time · p90 35 min · 529 flights
- Fridays81% on time · p90 30 min · 513 flights
- Mondays80% on time · p90 35 min · 501 flights
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