OnTimeStats

Historical on-time performance

Santa Ana to Salt Lake City

588 miData through Dec 2025Source: US DOT · BTS

Flights on SNA–SLC arrive on time 86% of the time over the last 12 months.

On-time rate86%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights

based on 1,607 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Delta Air Lines
    On-time86%
    Medianon time
    p9025 min
    Cancel0.5%
    Flights1,607

Why flights run late

Delay causes

  • Airline43%
  • Weather0%
  • Air traffic (NAS)10%
  • Late aircraft47%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly SNA → SLC

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 — 91% on time.

  • Mornings91% on time · p90 10 min · 1,494 flights
  • Middays84% on time · p90 35 min · 1,810 flights
  • Evenings82% on time · p90 40 min · 1,724 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 82% to 89% on time.

  • Tuesdays89% on time · p90 15 min · 737 flights
  • Wednesdays88% on time · p90 15 min · 738 flights
  • Saturdays86% on time · p90 20 min · 626 flights
  • Thursdays86% on time · p90 25 min · 737 flights
  • Fridays85% on time · p90 35 min · 740 flights
  • Sundays83% on time · p90 25 min · 748 flights
  • Mondays82% on time · p90 45 min · 747 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.