OnTimeStats

Historical on-time performance

Denver to Pierre

385 miData through Dec 2025Source: US DOT · BTS

Flights on DEN–PIR arrive on time 80% of the time over the last 12 months.

On-time rate80%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled1.7%of scheduled flights

based on 298 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time80%
    Medianon time
    p9045 min
    Cancel1.7%
    Flights298

Why flights run late

Delay causes

  • Airline30%
  • Weather11%
  • Air traffic (NAS)17%
  • Late aircraft43%
  • 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 DEN → PIR

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 79% to 81% on time.

  • Middays81% on time · p90 25 min · 111 flights · limited
  • Overnights79% on time · p90 50 min · 150 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 70% to 81% on time.

  • Mondays81% on time · p90 25 min · 53 flights · limited
  • Sundays79% on time · p90 35 min · 53 flights · limited
  • Fridays70% on time · p90 50 min · 53 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.