OnTimeStats

Historical on-time performance

Saint George to Salt Lake City

269 miData through May 2026Source: US DOT · BTS

Flights on SGU–SLC 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 1,708 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%
    Flights1,708

Why flights run late

Delay causes

  • Airline78%
  • Weather17%
  • Air traffic (NAS)5%
  • Late aircraft0%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather0%
  • Air traffic (NAS)100%
  • Security0%

Most cancellations here are attributed to Air traffic (NAS). Shares are among 3 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 SGU → SLC

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

Best time of day

Mornings are the most reliable time of day to fly this route — 97% on time.

  • Mornings97% on time · p90 on time · 1,475 flights
  • Evenings91% on time · p90 10 min · 709 flights
  • Middays91% on time · p90 10 min · 1,376 flights
  • Afternoons88% on time · p90 15 min · 944 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 91% to 94% on time.

  • Wednesdays94% on time · p90 5 min · 646 flights
  • Mondays93% on time · p90 5 min · 651 flights
  • Sundays93% on time · p90 5 min · 681 flights
  • Tuesdays92% on time · p90 5 min · 640 flights
  • Fridays92% on time · p90 5 min · 679 flights
  • Thursdays91% on time · p90 10 min · 662 flights
  • Saturdays91% on time · p90 10 min · 545 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.