OnTimeStats

Historical on-time performance

San Francisco to San Luis Obispo

191 miData through Dec 2025Source: US DOT · BTS

Flights on SFO–SBP arrive on time 76% of the time over the last 12 months.

On-time rate76%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights

based on 1,156 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time76%
    Medianon time
    p9045 min
    Cancel1.0%
    Flights1,156

Why flights run late

Delay causes

  • Airline35%
  • Weather14%
  • Air traffic (NAS)32%
  • Late aircraft19%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly SFO → 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 76% to 81% on time.

  • Evenings81% on time · p90 35 min · 295 flights
  • Mornings81% on time · p90 40 min · 357 flights
  • Overnights79% on time · p90 30 min · 995 flights
  • Middays77% on time · p90 40 min · 1,102 flights
  • Afternoons76% on time · p90 40 min · 577 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 73% to 83% on time.

  • Tuesdays83% on time · p90 25 min · 465 flights
  • Saturdays83% on time · p90 40 min · 463 flights
  • Thursdays81% on time · p90 25 min · 475 flights
  • Wednesdays79% on time · p90 30 min · 473 flights
  • Sundays74% on time · p90 45 min · 486 flights
  • Fridays74% on time · p90 40 min · 482 flights
  • Mondays73% on time · p90 50 min · 482 flights
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Methodology

A flight is on time when it arrives within 15 minutes of schedule — the US DOT / BTS standard. Median and p90(the “1-in-10 bad day”) are read from the full arrival-delay distribution, never averaged across periods.

Figures cover a carrier’s own BTS-coded flights. Cells below ~200 flights are flagged as limited data. All numbers are pre-computed from public BTS On-Time Performance data.