OnTimeStats

Historical on-time performance

Salt Lake City to Detroit

1,481 miData through May 2026Source: US DOT · BTS

Flights on SLC–DTW arrive on time 88% of the time over the last 12 months.

On-time rate88%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights

based on 1,535 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-time88%
    Medianon time
    p9015 min
    Cancel0.2%
    Flights1,535

Why flights run late

Delay causes

  • Airline58%
  • Weather0%
  • Air traffic (NAS)15%
  • Late aircraft26%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline33%
  • Weather67%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 3 cancellations with a reported cause (BTS reports causes from June 2003).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly SLC → DTW

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

Mornings are the most reliable time of day to fly this route — 92% on time.

  • Mornings92% on time · p90 5 min · 2,187 flights
  • Middays85% on time · p90 25 min · 588 flights
  • Afternoons83% on time · p90 25 min · 553 flights
  • Evenings79% on time · p90 45 min · 1,084 flights
  • Overnights78% on time · p90 40 min · 187 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 85% to 88% on time.

  • Mondays88% on time · p90 15 min · 659 flights
  • Wednesdays88% on time · p90 15 min · 670 flights
  • Tuesdays87% on time · p90 20 min · 647 flights
  • Thursdays87% on time · p90 15 min · 660 flights
  • Saturdays86% on time · p90 20 min · 629 flights
  • Fridays85% on time · p90 25 min · 676 flights
  • Sundays85% on time · p90 20 min · 658 flights

Keep exploring

Related pages

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.