OnTimeStats

Historical on-time performance

Salt Lake City to Oakland

589 miData through Dec 2025Source: US DOT · BTS

Flights on SLC–OAK arrive on time 89% of the time over the last 12 months.

On-time rate89%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled0.1%of scheduled flights

based on 1,733 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
    Cancel0.0%
    Flights123
  • SkyWest Airlinesbest
    On-time92%
    Medianon time
    p905 min
    Cancel0.2%
    Flights920
  • Southwest Airlines
    On-time86%
    Medianon time
    p9020 min
    Cancel0.0%
    Flights690

Why flights run late

Delay causes

  • Airline52%
  • Weather4%
  • Air traffic (NAS)6%
  • Late aircraft38%
  • 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 → OAK

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 — 95% on time.

  • Mornings95% on time · p90 5 min · 871 flights
  • Afternoons90% on time · p90 15 min · 1,198 flights
  • Middays89% on time · p90 15 min · 1,820 flights
  • Overnights83% on time · p90 30 min · 1,377 flights
  • Evenings68% on time · p90 50 min · 571 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 84% to 88% on time.

  • Saturdays88% on time · p90 15 min · 693 flights
  • Thursdays88% on time · p90 20 min · 881 flights
  • Tuesdays88% on time · p90 15 min · 856 flights
  • Wednesdays87% on time · p90 20 min · 851 flights
  • Fridays87% on time · p90 20 min · 886 flights
  • Sundays85% on time · p90 25 min · 779 flights
  • Mondays84% on time · p90 25 min · 891 flights
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Keep exploring

Related pages

Delay predictorfor this route→SLC airportSalt Lake City→OAK airportOakland→Delta Air Lines on this routecarrier detail→Delta Air Linesairline profile→

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.