OnTimeStats

Historical on-time performance

Salt Lake City to Twin Falls

175 miData through Dec 2025Source: US DOT · BTS

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

On-time rate94%arrived within 15 min
p90 delayon time1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights

based on 716 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
    p90on time
    Cancel0.0%
    Flights716

Why flights run late

Delay causes

  • Airline71%
  • Weather21%
  • Air traffic (NAS)8%
  • 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 → TWF

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

Best time of day

Overnights are the most reliable time of day to fly this route — 95% on time.

  • Overnights95% on time · p90 on time · 1,060 flights
  • Middays89% on time · p90 15 min · 809 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 89% to 94% on time.

  • Saturdays94% on time · p90 on time · 261 flights
  • Mondays94% on time · p90 5 min · 277 flights
  • Tuesdays93% on time · p90 on time · 276 flights
  • Sundays93% on time · p90 on time · 273 flights
  • Fridays92% on time · p90 on time · 272 flights
  • Wednesdays91% on time · p90 5 min · 274 flights
  • Thursdays89% on time · p90 15 min · 272 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.