OnTimeStats

Historical on-time performance

Santa Rosa to Phoenix

699 miData through May 2026Source: US DOT · BTS

Flights on STS–PHX arrive on time 77% of the time over the last 12 months.

On-time rate77%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights

based on 561 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-time80%
    Medianon time
    p9040 min
    Cancel0.3%
    Flights333
  • SkyWest Airlines
    On-time73%
    Medianon time
    p9060 min
    Cancel0.0%
    Flights228

Why flights run late

Delay causes

  • Airline41%
  • Weather1%
  • Air traffic (NAS)13%
  • Late aircraft45%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather0%
  • Air traffic (NAS)100%
  • Security0%

Most cancellations here are attributed to Air traffic (NAS). Shares are among 1 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 STS → PHX

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 81% to 82% on time.

  • Afternoons82% on time · p90 30 min · 929 flights
  • Middays81% on time · p90 30 min · 819 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 76% to 85% on time.

  • Tuesdays85% on time · p90 25 min · 237 flights
  • Saturdays85% on time · p90 25 min · 248 flights
  • Wednesdays84% on time · p90 20 min · 244 flights
  • Thursdays81% on time · p90 30 min · 254 flights
  • Sundays81% on time · p90 40 min · 258 flights
  • Mondays78% on time · p90 45 min · 253 flights
  • Fridays76% on time · p90 45 min · 255 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.