OnTimeStats

Historical on-time performance

San Luis Obispo to San Francisco

191 miData through May 2026Source: US DOT · BTS

Flights on SBP–SFO arrive on time 64% of the time over the last 12 months.

On-time rate64%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights

based on 1,103 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.

  • SkyWest Airlines
    On-time64%
    Medianon time
    p9060 min
    Cancel1.1%
    Flights1,025
  • United Airlines
    On-time63%
    Median5 min
    p9065 min
    Cancel0.0%
    Flights78

Why flights run late

Delay causes

  • Airline36%
  • Weather8%
  • Air traffic (NAS)46%
  • Late aircraft9%
  • Security0%

Most delay minutes here are attributed to Air traffic (NAS).

When flights don't go

Why flights were cancelled

  • Airline9%
  • Weather36%
  • Air traffic (NAS)55%
  • Security0%

Most cancellations here are attributed to Air traffic (NAS). Shares are among 11 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 SBP → SFO

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 65% to 79% on time.

  • Evenings79% on time · p90 65 min · 539 flights
  • Mornings75% on time · p90 40 min · 1,235 flights
  • Afternoons69% on time · p90 55 min · 1,130 flights
  • Middays65% on time · p90 55 min · 420 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 69% to 78% on time.

  • Tuesdays78% on time · p90 40 min · 464 flights
  • Saturdays75% on time · p90 45 min · 470 flights
  • Thursdays72% on time · p90 55 min · 488 flights
  • Wednesdays72% on time · p90 40 min · 474 flights
  • Sundays71% on time · p90 65 min · 502 flights
  • Mondays69% on time · p90 70 min · 489 flights
  • Fridays69% on time · p90 55 min · 493 flights

Keep exploring

Related pages

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.