OnTimeStats

Historical on-time performance

Detroit to Boston

632 miData through Dec 2025Source: US DOT · BTS

Flights on DTW–BOS arrive on time 74% of the time over the last 12 months.

On-time rate74%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights

based on 2,599 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.

  • Spirit Airlines
    On-time79%
    Medianon time
    p9065 min
    Cancel1.6%
    Flights123
  • Delta Air Lines
    On-time74%
    Medianon time
    p9060 min
    Cancel0.8%
    Flights1,716
  • JetBlue Airways
    On-time74%
    Medianon time
    p9065 min
    Cancel1.8%
    Flights760

Why flights run late

Delay causes

  • Airline35%
  • Weather1%
  • Air traffic (NAS)39%
  • Late aircraft26%
  • Security0%

Most delay minutes here are attributed to Air traffic (NAS).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly DTW → BOS

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 · 1,978 flights
  • Middays81% on time · p90 35 min · 2,247 flights
  • Afternoons73% on time · p90 55 min · 1,139 flights
  • Overnights68% on time · p90 65 min · 1,525 flights
  • Evenings63% on time · p90 85 min · 1,386 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 72% to 81% on time.

  • Saturdays81% on time · p90 30 min · 1,030 flights
  • Wednesdays80% on time · p90 40 min · 1,173 flights
  • Tuesdays80% on time · p90 45 min · 1,178 flights
  • Mondays74% on time · p90 60 min · 1,238 flights
  • Fridays74% on time · p90 55 min · 1,229 flights
  • Thursdays74% on time · p90 60 min · 1,218 flights
  • Sundays72% on time · p90 60 min · 1,209 flights
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Keep exploring

Related pages

Delay predictorfor this route→DTW airportDetroit→BOS airportBoston→Spirit Airlines on this routecarrier detail→Spirit Airlinesairline 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.