OnTimeStats

Historical on-time performance

Houston to Detroit

1,076 miData through Dec 2025Source: US DOT · BTS

Flights on IAH–DTW arrive on time 81% of the time over the last 12 months.

On-time rate81%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights

based on 2,108 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
    p9030 min
    Cancel0.9%
    Flights1,294
  • United Airlines
    On-time72%
    Medianon time
    p9040 min
    Cancel2.8%
    Flights247
  • Spirit Airlines
    On-time82%
    Medianon time
    p9030 min
    Cancel0.7%
    Flights567

Why flights run late

Delay causes

  • Airline52%
  • Weather3%
  • Air traffic (NAS)15%
  • Late aircraft31%
  • 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 IAH → 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 — 88% on time.

  • Mornings88% on time · p90 15 min · 1,886 flights
  • Middays82% on time · p90 30 min · 1,768 flights
  • Afternoons76% on time · p90 55 min · 1,417 flights
  • Evenings71% on time · p90 70 min · 1,264 flights
  • Overnights70% on time · p90 60 min · 689 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 77% to 81% on time.

  • Tuesdays81% on time · p90 35 min · 986 flights
  • Wednesdays81% on time · p90 30 min · 981 flights
  • Saturdays80% on time · p90 40 min · 843 flights
  • Sundays79% on time · p90 45 min · 1,038 flights
  • Mondays79% on time · p90 40 min · 1,071 flights
  • Thursdays79% on time · p90 50 min · 1,052 flights
  • Fridays77% on time · p90 65 min · 1,053 flights
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Keep exploring

Related pages

Delay predictorfor this route→IAH airportHouston→DTW airportDetroit→ExpressJet Airlines (Continental Express) on this routecarrier detail→ExpressJet Airlines (Continental Express)airline 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.