OnTimeStats

Historical on-time performance

Montrose CO to Denver

197 miData through May 2026Source: US DOT · BTS

Flights on MTJ–DEN arrive on time 77% of the time over the last 12 months.

On-time rate77%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights

based on 1,293 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlinesbest
    On-time81%
    Medianon time
    p9045 min
    Cancel0.3%
    Flights346
  • United Airlines
    On-time76%
    Medianon time
    p9060 min
    Cancel0.8%
    Flights886
  • SkyWest Airlines
    On-time67%
    Medianon time
    p9075 min
    Cancel0.0%
    Flights61

Why flights run late

Delay causes

  • Airline20%
  • Weather1%
  • Air traffic (NAS)37%
  • Late aircraft42%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline100%
  • Weather0%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Airline. Shares are among 8 cancellations with a reported cause (BTS reports causes from June 2003).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly MTJ → DEN

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 66% to 84% on time.

  • Mornings84% on time · p90 25 min · 1,188 flights
  • Middays82% on time · p90 30 min · 1,841 flights
  • Afternoons66% on time · p90 100 min · 1,199 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 73% to 81% on time.

  • Tuesdays81% on time · p90 40 min · 585 flights
  • Wednesdays80% on time · p90 35 min · 585 flights
  • Thursdays78% on time · p90 40 min · 616 flights
  • Sundays78% on time · p90 45 min · 637 flights
  • Mondays78% on time · p90 40 min · 608 flights
  • Saturdays77% on time · p90 45 min · 653 flights
  • Fridays73% on time · p90 75 min · 622 flights

Keep exploring

Related pages

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.