OnTimeStats

Historical on-time performance

Salt Lake City to Saint George

269 miData through Dec 2025Source: US DOT · BTS

Flights on SLC–SGU arrive on time 91% of the time over the last 12 months.

On-time rate91%arrived within 15 min
p90 delay10 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights

based on 1,667 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time91%
    Medianon time
    p9010 min
    Cancel0.2%
    Flights1,667

Why flights run late

Delay causes

  • Airline89%
  • Weather8%
  • Air traffic (NAS)3%
  • 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 → SGU

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 85% to 97% on time.

  • Afternoons97% on time · p90 on time · 111 flights · limited
  • Overnights95% on time · p90 5 min · 1,078 flights
  • Mornings91% on time · p90 10 min · 842 flights
  • Middays90% on time · p90 10 min · 1,338 flights
  • Evenings85% on time · p90 20 min · 944 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 89% to 92% on time.

  • Mondays92% on time · p90 10 min · 627 flights
  • Saturdays92% on time · p90 10 min · 521 flights
  • Wednesdays91% on time · p90 10 min · 618 flights
  • Tuesdays91% on time · p90 10 min · 619 flights
  • Fridays90% on time · p90 10 min · 645 flights
  • Sundays89% on time · p90 15 min · 652 flights
  • Thursdays89% on time · p90 15 min · 631 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.