OnTimeStats

Historical on-time performance

Portland to Bozeman

554 miData through Dec 2025Source: US DOT · BTS

Flights on PDX–BZN arrive on time 90% of the time over the last 12 months.

On-time rate90%arrived within 15 min
p90 delay10 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights

based on 30 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time90%
    Medianon time
    p9010 min
    Cancel0.0%
    Flights30

Why flights run late

Delay causes

  • Airline67%
  • Weather0%
  • Air traffic (NAS)10%
  • Late aircraft23%
  • 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 → BZN

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

Best time of day

Overnights are the most reliable time of day to fly this route — 92% on time.

  • Overnights92% on time · p90 5 min · 50 flights · limited
  • Afternoons79% on time · p90 45 min · 122 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.