OnTimeStats

Historical on-time performance

Portland to Santa Ana

859 miData through Dec 2025Source: US DOT · BTS

Flights on PDX–SNA arrive on time 88% of the time over the last 12 months.

On-time rate88%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights

based on 1,526 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Alaska Airlines
    On-time88%
    Medianon time
    p9015 min
    Cancel1.4%
    Flights1,526

Why flights run late

Delay causes

  • Airline45%
  • Weather2%
  • Air traffic (NAS)32%
  • Late aircraft20%
  • 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 PDX → SNA

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

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 86% to 92% on time.

  • Overnights92% on time · p90 5 min · 485 flights
  • Evenings90% on time · p90 10 min · 713 flights
  • Mornings88% on time · p90 15 min · 1,131 flights
  • Afternoons87% on time · p90 15 min · 726 flights
  • Middays86% on time · p90 20 min · 929 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 85% to 93% on time.

  • Saturdays93% on time · p90 5 min · 526 flights
  • Wednesdays90% on time · p90 10 min · 553 flights
  • Tuesdays90% on time · p90 10 min · 553 flights
  • Fridays88% on time · p90 15 min · 586 flights
  • Mondays87% on time · p90 15 min · 595 flights
  • Thursdays86% on time · p90 15 min · 580 flights
  • Sundays85% on time · p90 15 min · 591 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.