OnTimeStats

Historical on-time performance

Los Angeles to Detroit

1,979 miData through Dec 2025Source: US DOT · BTS

Flights on LAX–DTW arrive on time 83% of the time over the last 12 months.

On-time rate83%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights

based on 2,690 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • Delta Air Lines
    On-time83%
    Medianon time
    p9025 min
    Cancel0.6%
    Flights1,975
  • Spirit Airlines
    On-time84%
    Medianon time
    p9030 min
    Cancel0.8%
    Flights715

Why flights run late

Delay causes

  • Airline44%
  • Weather4%
  • Air traffic (NAS)18%
  • Late aircraft34%
  • 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 LAX → DTW

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 — 89% on time.

  • Mornings89% on time · p90 15 min · 2,858 flights
  • Middays84% on time · p90 25 min · 1,776 flights
  • Afternoons80% on time · p90 35 min · 1,201 flights
  • Evenings78% on time · p90 50 min · 223 flights
  • Overnights77% on time · p90 40 min · 2,098 flights
  • Early mornings55% on time · p90 75 min · 65 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 80% to 86% on time.

  • Tuesdays86% on time · p90 20 min · 1,135 flights
  • Wednesdays86% on time · p90 20 min · 1,140 flights
  • Saturdays84% on time · p90 20 min · 1,099 flights
  • Fridays83% on time · p90 25 min · 1,221 flights
  • Thursdays81% on time · p90 30 min · 1,204 flights
  • Mondays81% on time · p90 35 min · 1,212 flights
  • Sundays80% on time · p90 35 min · 1,210 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.