OnTimeStats

Historical on-time performance

Denver to Jamestown

573 miData through Dec 2025Source: US DOT · BTS

Flights on DEN–JMS arrive on time 83% of the time over the last 12 months.

On-time rate83%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights

based on 473 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time83%
    Medianon time
    p9030 min
    Cancel0.4%
    Flights473

Why flights run late

Delay causes

  • Airline55%
  • Weather5%
  • Air traffic (NAS)8%
  • Late aircraft32%
  • 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 DEN → JMS

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 — 91% on time.

  • Mornings91% on time · p90 5 min · 139 flights · limited
  • Middays83% on time · p90 20 min · 870 flights
  • Afternoons80% on time · p90 40 min · 186 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 80% to 88% on time.

  • Wednesdays88% on time · p90 10 min · 178 flights · limited
  • Tuesdays86% on time · p90 15 min · 154 flights · limited
  • Sundays85% on time · p90 15 min · 179 flights · limited
  • Mondays84% on time · p90 25 min · 179 flights · limited
  • Saturdays82% on time · p90 20 min · 153 flights · limited
  • Fridays80% on time · p90 25 min · 178 flights · limited
  • Thursdays80% on time · p90 30 min · 174 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.