OnTimeStats

Historical on-time performance

Salt Lake City to Great Falls

463 miData through Dec 2025Source: US DOT · BTS

Flights on SLC–GTF 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)
Cancelled0.5%of scheduled flights

based on 1,063 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
    Cancel0.5%
    Flights1,063

Why flights run late

Delay causes

  • Airline79%
  • Weather17%
  • Air traffic (NAS)4%
  • 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 → GTF

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 90% to 97% on time.

  • Mornings97% on time · p90 on time · 698 flights
  • Middays94% on time · p90 on time · 396 flights
  • Overnights94% on time · p90 5 min · 1,091 flights
  • Afternoons90% on time · p90 15 min · 927 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 93% to 95% on time.

  • Fridays95% on time · p90 5 min · 458 flights
  • Saturdays94% on time · p90 5 min · 374 flights
  • Wednesdays93% on time · p90 5 min · 458 flights
  • Sundays93% on time · p90 5 min · 448 flights
  • Tuesdays93% on time · p90 5 min · 459 flights
  • Thursdays93% on time · p90 5 min · 454 flights
  • Mondays93% on time · p90 5 min · 462 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.