OnTimeStats

Historical on-time performance

Phoenix to Detroit

1,671 miData through May 2026Source: US DOT · BTS

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

On-time rate81%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights

based on 2,147 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Delta Air Linesbest
    On-time84%
    Medianon time
    p9025 min
    Cancel0.6%
    Flights1,335
  • Spirit Airlines
    On-time80%
    Medianon time
    p9020 min
    Cancel0.0%
    Flights30
  • American Airlines
    On-time77%
    Medianon time
    p9045 min
    Cancel0.8%
    Flights628
  • Frontier Airlines
    On-time69%
    Medianon time
    p9060 min
    Cancel1.9%
    Flights154

Why flights run late

Delay causes

  • Airline36%
  • Weather2%
  • Air traffic (NAS)10%
  • Late aircraft52%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline75%
  • Weather25%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Airline. Shares are among 16 cancellations with a reported cause (BTS reports causes from June 2003).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly PHX → DTW

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 69% to 87% on time.

  • Mornings87% on time · p90 15 min · 2,196 flights
  • Middays85% on time · p90 25 min · 1,671 flights
  • Overnights80% on time · p90 30 min · 1,393 flights
  • Afternoons78% on time · p90 40 min · 1,496 flights
  • Evenings69% on time · p90 60 min · 182 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 80% to 87% on time.

  • Tuesdays87% on time · p90 20 min · 900 flights
  • Thursdays84% on time · p90 25 min · 1,032 flights
  • Wednesdays84% on time · p90 25 min · 927 flights
  • Saturdays82% on time · p90 30 min · 1,050 flights
  • Mondays82% on time · p90 35 min · 1,011 flights
  • Fridays81% on time · p90 35 min · 1,015 flights
  • Sundays80% on time · p90 40 min · 1,053 flights

Keep exploring

Related pages

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.