OnTimeStats

Historical on-time performance

Denver to Kalispell

752 miData through Dec 2025Source: US DOT · BTS

Flights on DEN–FCA arrive on time 78% of the time over the last 12 months.

On-time rate78%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights

based on 1,080 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlinesbest
    On-time91%
    Medianon time
    p9010 min
    Cancel0.4%
    Flights263
  • United Airlines
    On-time73%
    Medianon time
    p9045 min
    Cancel0.4%
    Flights817

Why flights run late

Delay causes

  • Airline34%
  • Weather13%
  • Air traffic (NAS)12%
  • Late aircraft42%
  • 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 → FCA

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 10 min · 459 flights
  • Middays82% on time · p90 30 min · 1,610 flights
  • Evenings69% on time · p90 70 min · 1,093 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 76% to 81% on time.

  • Tuesdays81% on time · p90 30 min · 442 flights
  • Mondays81% on time · p90 30 min · 456 flights
  • Sundays80% on time · p90 30 min · 454 flights
  • Thursdays78% on time · p90 45 min · 454 flights
  • Fridays77% on time · p90 65 min · 456 flights
  • Wednesdays77% on time · p90 35 min · 442 flights
  • Saturdays76% on time · p90 45 min · 458 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.