OnTimeStats

Historical on-time performance

Salt Lake City to Grand Junction

217 miData through Dec 2025Source: US DOT · BTS

Flights on SLC–GJT arrive on time 94% of the time over the last 12 months.

On-time rate94%arrived within 15 min
p90 delay5 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights

based on 632 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time94%
    Medianon time
    p905 min
    Cancel0.2%
    Flights632

Why flights run late

Delay causes

  • Airline90%
  • Weather9%
  • Air traffic (NAS)1%
  • Late aircraft0%
  • 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 SLC → GJT

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 86% to 95% on time.

  • Overnights95% on time · p90 on time · 388 flights
  • Middays92% on time · p90 10 min · 216 flights
  • Evenings86% on time · p90 25 min · 69 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 89% to 97% on time.

  • Wednesdays97% on time · p90 on time · 110 flights · limited
  • Sundays95% on time · p90 5 min · 111 flights · limited
  • Saturdays93% on time · p90 on time · 61 flights · limited
  • Mondays93% on time · p90 on time · 112 flights · limited
  • Fridays92% on time · p90 5 min · 112 flights · limited
  • Thursdays91% on time · p90 10 min · 110 flights · limited
  • Tuesdays89% on time · p90 5 min · 66 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.