OnTimeStats

Historical on-time performance

Phoenix to Santa Rosa

699 miData through Dec 2025Source: US DOT · BTS

Flights on PHX–STS arrive on time 81% of the time over the last 12 months.

On-time rate81%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights

based on 464 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.

  • Envoy Air
    On-time83%
    Medianon time
    p9020 min
    Cancel0.4%
    Flights247
  • American Airlines
    On-time83%
    Medianon time
    p9035 min
    Cancel0.0%
    Flights92
  • SkyWest Airlines
    On-time74%
    Medianon time
    p9040 min
    Cancel0.0%
    Flights125

Why flights run late

Delay causes

  • Airline50%
  • Weather1%
  • Air traffic (NAS)15%
  • Late aircraft34%
  • 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 PHX → STS

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

Mornings are the most reliable time of day to fly this route — 93% on time.

  • Mornings93% on time · p90 10 min · 61 flights · limited
  • Middays84% on time · p90 20 min · 1,264 flights
  • Afternoons78% on time · p90 25 min · 303 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 79% to 88% on time.

  • Tuesdays88% on time · p90 10 min · 228 flights
  • Wednesdays86% on time · p90 15 min · 228 flights
  • Thursdays85% on time · p90 20 min · 236 flights
  • Saturdays83% on time · p90 25 min · 228 flights
  • Fridays83% on time · p90 20 min · 235 flights
  • Sundays82% on time · p90 25 min · 238 flights
  • Mondays79% on time · p90 30 min · 235 flights
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Keep exploring

Related pages

Delay predictorfor this route→PHX airportPhoenix→STS airportSanta Rosa→Envoy Air on this routecarrier detail→Envoy Airairline profile→

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.