OnTimeStats

Historical on-time performance

Salt Lake City to Tucson

601 miData through Dec 2025Source: US DOT · BTS

Flights on SLC–TUS 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 1,087 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%
    Flights1,087

Why flights run late

Delay causes

  • Airline84%
  • Weather10%
  • Air traffic (NAS)6%
  • 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 → TUS

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

Mornings are the most reliable time of day to fly this route — 94% on time.

  • Mornings94% on time · p90 5 min · 1,109 flights
  • Afternoons90% on time · p90 15 min · 1,067 flights
  • Overnights88% on time · p90 15 min · 1,090 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 88% to 94% on time.

  • Saturdays94% on time · p90 5 min · 465 flights
  • Wednesdays91% on time · p90 10 min · 469 flights
  • Tuesdays91% on time · p90 10 min · 469 flights
  • Thursdays90% on time · p90 10 min · 464 flights
  • Mondays90% on time · p90 15 min · 469 flights
  • Fridays89% on time · p90 15 min · 467 flights
  • Sundays88% on time · p90 15 min · 467 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.