OnTimeStats

Historical on-time performance

Birmingham to Detroit

625 miData through Dec 2025Source: US DOT · BTS

Flights on BHM–DTW arrive on time 75% of the time over the last 12 months.

On-time rate75%arrived within 15 min
p90 delay85 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights

based on 97 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time75%
    Medianon time
    p9085 min
    Cancel1.0%
    Flights97

Why flights run late

Delay causes

  • Airline98%
  • Weather0%
  • Air traffic (NAS)2%
  • Late aircraft0%
  • 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 BHM → 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 · 440 flights
  • Evenings80% on time · p90 35 min · 386 flights
  • Middays73% on time · p90 75 min · 134 flights · limited
  • Afternoons72% on time · p90 80 min · 262 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 76% to 85% on time.

  • Thursdays85% on time · p90 25 min · 185 flights · limited
  • Tuesdays85% on time · p90 25 min · 172 flights · limited
  • Saturdays84% on time · p90 60 min · 113 flights · limited
  • Wednesdays81% on time · p90 30 min · 176 flights · limited
  • Fridays78% on time · p90 50 min · 199 flights · limited
  • Mondays76% on time · p90 90 min · 200 flights
  • Sundays76% on time · p90 60 min · 177 flights · limited
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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.