OnTimeStats

Historical on-time performance

Grand Junction to Denver

212 miData through May 2026Source: US DOT · BTS

Flights on GJT–DEN arrive on time 75% of the time over the last 12 months.

On-time rate75%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled1.6%of scheduled flights

based on 2,203 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlinesbest
    On-time79%
    Medianon time
    p9035 min
    Cancel0.4%
    Flights733
  • SkyWest Airlines
    On-time73%
    Medianon time
    p9065 min
    Cancel2.2%
    Flights1,470

Why flights run late

Delay causes

  • Airline35%
  • Weather10%
  • Air traffic (NAS)29%
  • Late aircraft26%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline8%
  • Weather42%
  • Air traffic (NAS)50%
  • Security0%

Most cancellations here are attributed to Air traffic (NAS). Shares are among 36 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 GJT → 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 65% to 83% on time.

  • Mornings83% on time · p90 30 min · 1,705 flights
  • Middays81% on time · p90 35 min · 1,782 flights
  • Evenings72% on time · p90 70 min · 975 flights
  • Afternoons65% on time · p90 105 min · 1,028 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 75% to 79% on time.

  • Wednesdays79% on time · p90 45 min · 787 flights
  • Tuesdays79% on time · p90 45 min · 788 flights
  • Saturdays78% on time · p90 45 min · 790 flights
  • Sundays77% on time · p90 45 min · 782 flights
  • Thursdays76% on time · p90 55 min · 784 flights
  • Mondays76% on time · p90 55 min · 778 flights
  • Fridays75% on time · p90 50 min · 786 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.