OnTimeStats

Historical on-time performance

Portland to Palm Springs

873 miData through Dec 2025Source: US DOT · BTS

Flights on PDX–PSP arrive on time 82% of the time over the last 12 months.

On-time rate82%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights

based on 618 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Alaska Airlinesbest
    On-time87%
    Medianon time
    p9015 min
    Cancel0.5%
    Flights373
  • SkyWest Airlines
    On-time74%
    Medianon time
    p9040 min
    Cancel0.8%
    Flights245

Why flights run late

Delay causes

  • Airline32%
  • Weather4%
  • Air traffic (NAS)21%
  • Late aircraft44%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly PDX → PSP

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 — 90% on time.

  • Mornings90% on time · p90 10 min · 493 flights
  • Middays82% on time · p90 25 min · 222 flights
  • Afternoons82% on time · p90 25 min · 393 flights
  • Overnights81% on time · p90 40 min · 141 flights · limited
  • Evenings79% on time · p90 35 min · 431 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 81% to 86% on time.

  • Thursdays86% on time · p90 15 min · 242 flights
  • Tuesdays86% on time · p90 20 min · 235 flights
  • Wednesdays84% on time · p90 25 min · 230 flights
  • Saturdays84% on time · p90 30 min · 239 flights
  • Mondays83% on time · p90 20 min · 250 flights
  • Fridays83% on time · p90 20 min · 241 flights
  • Sundays81% on time · p90 40 min · 243 flights
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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.