OnTimeStats

Historical on-time performance

Boston to Detroit

632 miData through Dec 2025Source: US DOT · BTS

Flights on BOS–DTW arrive on time 78% of the time over the last 12 months.

On-time rate78%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights

based on 2,600 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-time79%
    Medianon time
    p9040 min
    Cancel0.8%
    Flights1,717
  • JetBlue Airways
    On-time73%
    Medianon time
    p9065 min
    Cancel1.4%
    Flights760
  • Spirit Airlines
    On-time85%
    Medianon time
    p9025 min
    Cancel0.8%
    Flights123

Why flights run late

Delay causes

  • Airline31%
  • Weather1%
  • Air traffic (NAS)18%
  • Late aircraft50%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly BOS → 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 · 3,242 flights
  • Middays81% on time · p90 45 min · 1,427 flights
  • Evenings69% on time · p90 70 min · 1,534 flights
  • Afternoons68% on time · p90 75 min · 1,154 flights
  • Overnights60% on time · p90 90 min · 912 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 74% to 82% on time.

  • Wednesdays82% on time · p90 35 min · 1,174 flights
  • Tuesdays81% on time · p90 35 min · 1,168 flights
  • Saturdays80% on time · p90 45 min · 1,023 flights
  • Mondays77% on time · p90 55 min · 1,237 flights
  • Thursdays77% on time · p90 55 min · 1,225 flights
  • Fridays74% on time · p90 50 min · 1,227 flights
  • Sundays74% on time · p90 55 min · 1,215 flights
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Keep exploring

Related pages

Delay predictorfor this route→BOS airportBoston→DTW airportDetroit→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.