OnTimeStats

Historical on-time performance

Tucson to Portland

1,119 miData through Dec 2025Source: US DOT · BTS

Flights on TUS–PDX arrive on time 94% of the time over the last 12 months.

On-time rate94%arrived within 15 min
p90 delay5 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights

based on 302 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time94%
    Medianon time
    p905 min
    Cancel0.7%
    Flights302

Why flights run late

Delay causes

  • Airline21%
  • Weather0%
  • Air traffic (NAS)10%
  • Late aircraft69%
  • 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 TUS → PDX

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 88% to 94% on time.

  • Mornings94% on time · p90 5 min · 376 flights
  • Middays91% on time · p90 10 min · 137 flights · limited
  • Evenings88% on time · p90 10 min · 93 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 86% to 96% on time.

  • Tuesdays96% on time · p90 10 min · 71 flights · limited
  • Mondays95% on time · p90 5 min · 99 flights · limited
  • Wednesdays93% on time · p90 5 min · 71 flights · limited
  • Thursdays93% on time · p90 5 min · 97 flights · limited
  • Saturdays92% on time · p90 10 min · 75 flights · limited
  • Sundays90% on time · p90 20 min · 99 flights · limited
  • Fridays86% on time · p90 20 min · 96 flights · limited
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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.