OnTimeStats

Historical on-time performance

PHXSFO

Phoenix to San Francisco

651 miData through Dec 2025Source: US DOT · BTS

Flights on PHX–SFO arrive on time 75% of the time over the last 12 months.

On-time rate75%arrived within 15 min
Median delayon timetypical arrival
p90 delay50 min1 in 10 flights is worsetail risk
Cancelled0.4%of scheduled flights

based on 4,526 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlinesbest
    On-time81%
    Medianon time
    p9040 min
    Cancel0.6%
    Flights1,421
  • American Airlines
    On-time74%
    Medianon time
    p9055 min
    Cancel0.4%
    Flights1,346
  • SkyWest Airlines
    On-time77%
    Medianon time
    p9045 min
    Cancel0.2%
    Flights520
  • Southwest Airlines
    On-time68%
    Medianon time
    p9055 min
    Cancel0.4%
    Flights1,084
  • Frontier Airlines
    On-time75%
    Medianon time
    p9060 min
    Cancel0.6%
    Flights155

Why flights run late

Delay causes

  • Airline30%
  • Weather2%
  • Air traffic (NAS)27%
  • Late aircraft41%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

Advertisement

Keep exploring

Related pages

Delay predictorfor this route→PHX airportPhoenix→SFO airportSan Francisco→Horizon Air on this routecarrier detail→Horizon 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.