OnTimeStats

Historical on-time performance

Phoenix to San Luis Obispo

509 miData through May 2026Source: 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 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights

based on 1,046 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Envoy Airbest
    On-time91%
    Medianon time
    p905 min
    Cancel1.1%
    Flights263
  • American Airlines
    On-time81%
    Medianon time
    p9035 min
    Cancel0.4%
    Flights496
  • SkyWest Airlines
    On-time79%
    Medianon time
    p9040 min
    Cancel0.3%
    Flights287

Why flights run late

Delay causes

  • Airline39%
  • Weather1%
  • Air traffic (NAS)7%
  • Late aircraft53%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline17%
  • Weather17%
  • Air traffic (NAS)67%
  • Security0%

Most cancellations here are attributed to Air traffic (NAS). Shares are among 6 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 PHX → SBP

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 72% to 89% on time.

  • Mornings89% on time · p90 10 min · 117 flights · limited
  • Evenings88% on time · p90 15 min · 580 flights
  • Middays87% on time · p90 20 min · 1,238 flights
  • Afternoons82% on time · p90 30 min · 1,034 flights
  • Overnights72% on time · p90 55 min · 555 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 81% to 88% on time.

  • Tuesdays88% on time · p90 20 min · 450 flights
  • Fridays84% on time · p90 20 min · 525 flights
  • Wednesdays84% on time · p90 30 min · 478 flights
  • Thursdays84% on time · p90 30 min · 534 flights
  • Mondays83% on time · p90 30 min · 506 flights
  • Saturdays83% on time · p90 35 min · 486 flights
  • Sundays81% on time · p90 35 min · 545 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.